Manitowoc Indigo ID0302A, IY0304A, ID0322A, IY0324A, ID0452A, IY0454A, IR0500A, ID0502A, IY0504A, IR0520A ice machine Technician's Handbook

Indigo™ Series
Air/Water/Remote Condenser Ice
Machines
Technician’s Handbook
Part Number STH025 11/16
Safety Notices
Read these precautions to prevent personal injury:
•
Read this manual thoroughly before operating,
installing or performing maintenance on the
equipment. Failure to follow instructions in this
manual can cause property damage, injury or death.
•
Routine adjustments and maintenance procedures
outlined in this manual are not covered by the
warranty.
•
Proper installation, care and maintenance are
essential for maximum performance and trouble-free
operation of your equipment.
•
Visit our website www.manitowocice.com for manual
updates, translations, or contact information for
service agents in your area.
•
This equipment contains high voltage electricity and
refrigerant charge. Installation and repairs are to be
performed by properly trained technicians aware of
the dangers of dealing with high voltage electricity
and refrigerant under pressure. The technician must
also be certified in proper refrigerant handling
and servicing procedures. All lockout and tag out
procedures must be followed when working on this
equipment.
•
This equipment is intended for indoor use only. Do
not install or operate this equipment in outdoor
areas.
•
As you work on this equipment, be sure to pay close
attention to the safety notices in this handbook.
Disregarding the notices may lead to serious injury
and/or damage to the equipment.
nWarning
Follow these electrical requirements during
installation of this equipment.
•
All field wiring must conform to all applicable
codes of the authority having jurisdiction. It is
the responsibility of the end user to provide the
disconnect means to satisfy local codes. Refer to
rating plate for proper voltage.
•
This appliance must be grounded.
•
This equipment must be positioned so that
the plug is accessible unless other means for
disconnection from the power supply (e.g., circuit
breaker or disconnect switch) is provided.
•
Check all wiring connections, including factory
terminals, before operation. Connections can
become loose during shipment and installation.
nWarning
Follow these precautions to prevent personal
injury during installation of this equipment:
•
Installation must comply with all applicable
equipment fire and health codes with the authority
having jurisdiction.
•
To avoid instability the installation area must be
capable of supporting the combined weight of
the equipment and product. Additionally the
equipment must be level side to side and front to
back.
•
Remove all removable panels before lifting and
installing and use appropriate safety equipment
during installation and servicing. Two or more
people are required to lift or move this appliance to
prevent tipping and/or injury.
•
Do not damage the refrigeration circuit when
installing, maintaining or servicing the unit.
•
Connect to a potable water supply only.
•
This equipment contains refrigerant charge.
nWarning
Follow these precautions to prevent personal
injury while operating or maintaining this
equipment.
•
Refer to nameplate to identify the type of
refrigerant in your equipment.
•
Only trained and qualified personnel aware of the
dangers are allowed to work on the equipment.
•
Read this manual thoroughly before operating,
installing or performing maintenance on the
equipment. Failure to follow instructions in this
manual can cause property damage, injury or
death.
•
Crush/Pinch Hazard. Keep hands clear of moving
components. Components can move without
warning unless power is disconnected and all
potential energy is removed.
•
Moisture collecting on the floor will create a
slippery surface. Clean up any water on the floor
immediately to prevent a slip hazard.
nWarning
Follow these precautions to prevent personal
injury while operating or maintaining this
equipment.
•
Objects placed or dropped in the bin can affect
human health and safety. Locate and remove any
objects immediately.
•
Never use sharp objects or tools to remove ice or
frost.
•
Do not use mechanical devices or other means to
accelerate the defrosting process.
•
When using cleaning fluids or chemicals, rubber
gloves and eye protection (and/or face shield) must
be worn.
DANGER
Do not operate equipment that has been misused,
abused, neglected, damaged, or altered/modified
from that of original manufactured specifications.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience
and knowledge, unless they have been given
supervision concerning use of the appliance
by a person responsible for their safety. Do not
allow children to play with, clean or maintain this
appliance without proper supervision.
nWarning
Follow these precautions to prevent personal injury
during use and maintenance of this equipment:
.
•
It is the responsibility of the equipment owner to
perform a Personal Protective Equipment Hazard
Assessment to ensure adequate protection during
maintenance procedures.
•
Do Not Store Or Use Gasoline Or Other Flammable
Vapors Or Liquids In The Vicinity Of This Or Any
Other
•
Appliance. Never use flammable oil soaked cloths
or combustible cleaning solutions for cleaning.
•
All covers and access panels must be in place and
properly secured when operating this equipment.
•
Risk of fire/shock. All minimum clearances must be
maintained. Do not obstruct vents or openings.
•
Failure to disconnect power at the main power
supply disconnect could result in serious injury or
death. The power switch DOES NOT disconnect all
incoming power.
•
All utility connections and fixtures must be
maintained in accordance with the authority
having jurisdiction.
•
Turn off and lockout all utilities (gas, electric,
water) according to approved practices during
maintenance or servicing..
Table of Contents
General Information
How to Read a Model Number . . . . . . . . . . . . . . . . .
Head Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Cube Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model/Serial Number Location . . . . . . . . . . . . . . . .
Model Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air-Water-Remote Condenser Models . . . . . .
Ice Machine Warranty Information . . . . . . . . . . . .
LuminIce® II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
15
16
16
17
17
18
19
Installation
Ice Deflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Location of Ice Machine . . . . . . . . . . . . . . . . . . . . . . . 22
Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . 23
Air, Water, Remote Condenser Models . . . . . . 23
Ice Machine Heat of Rejection . . . . . . . . . . . . . . . . . 24
Installation on a Bin . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Ice Machine on a Dispenser Installation . . . . . . . 25
Lineset Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . 27
Remote Ice Machine Usage with Non-Manitowoc
Multi-Circuit Condensers . . . . . . . . . . . . . . . . . . . . . . 32
Maintenance
Cleaning and Sanitizing . . . . . . . . . . . . . . . . . . . . . . . 37
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Cleaning/Sanitizing Procedure . . . . . . . . . . . . . 39
Preventative Maintenance Cleaning Procedure
39
Exterior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Cleaning / Sanitizing Procedure . . . . . . . . . . . . . . . 40
Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . 40
Sanitizing Procedure . . . . . . . . . . . . . . . . . . . . . . . 43
Parts Removal for Cleaning/Sanitizing . . . . . . 46
Preventative Maintenance Cleaning Procedure . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Removal from Service/Winterization . . . . . . . . . . 53
Air-Cooled Ice Machines . . . . . . . . . . . . . . . . . . . 53
Water-Cooled Ice Machines . . . . . . . . . . . . . . . . 54
Part Number STH025 11/16
9
Operation
Control Panel Features . . . . . . . . . . . . . . . . . . . . . . . .
Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Navigation Overview . . . . . . . . . . . . . . . . . . .
Display Panel Navigation . . . . . . . . . . . . . . . . . . . . . .
Alerts and Messages . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Machine Info Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Password Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reset Password To Factory Defaults . . . . . . . . .
Set-Up Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time & Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time Configuration . . . . . . . . . . . . . . . . . . . . . . . .
Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Clarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LCD Brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Password On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Edit Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clean Minder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IAuCS Runtime . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LuminIce® Reminder . . . . . . . . . . . . . . . . . . . . . . .
Ice Bin Level Sensor . . . . . . . . . . . . . . . . . . . . . . . .
USB Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . .
Energy Saver Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Miser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
55
55
56
57
58
60
61
62
63
65
66
67
67
69
69
70
70
71
71
71
72
72
73
74
75
75
75
76
77
78
78
Part Number STH025 11/16
Service Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Data History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Real Time Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Manual Harvest . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Replace Control Board . . . . . . . . . . . . . . . . . . . . . 85
USB Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Event Log Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
USB Flash Drive Specifications and Formatting .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Upgrading Firmware with a Flash Drive . . . . . 93
Exporting Data to a Flash Drive . . . . . . . . . . . . . 95
Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Ice Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . 98
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . 101
Self Contained Air or Water Cooled . . . . . . . . 101
Energized Parts Chart Self Contained Models .
105
Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . 107
Energized Parts Chart Remote Models . . . . . 111
Troubleshooting
Safety Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Safe Operation Mode . . . . . . . . . . . . . . . . . . . . . 114
Water Assist Harvest . . . . . . . . . . . . . . . . . . . . . . 114
Water Thaw Cycle . . . . . . . . . . . . . . . . . . . . . . . . . 115
Analyzing Why a Safety Limit Stopped the Ice
Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Safety Limit #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Safety Limit #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Part Number STH025 11/16
11
Troubleshooting By Symptom . . . . . . . . . . . . . . . . 119
Reset To Factory Defaults . . . . . . . . . . . . . . . . . . 120
Symptom #1 Ice Machine Will Not Run . . . . . 121
Symptom #2 - Freeze Cycle Refrigeration
System Operational Analysis Tables . . . . . . . . 126
Symptom #3 & #4 Harvest Problems
Self‑contained Air, Water & Remote Condenser
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Symptom #3 Self-Contained Air or Watercooled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Symptom #3 - Remote Condenser . . . . . . . . . 158
Symptom #4 Self-Contained Air, Water-Cooled
or Or Remote . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Component Check Procedures
Electrical Components . . . . . . . . . . . . . . . . . . . . . . . 163
Control Board, Display Board and Touch Pad . .
163
Control Board Relay Test . . . . . . . . . . . . . . . . . . 166
Programming A Replacement Control Board . .
167
Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Water Level Control Circuitry . . . . . . . . . . . . . . 173
Ice Thickness Probe (Initiates Harvest) . . . . . 179
High Pressure Cutout (HPCO) Control . . . . . . 184
Fan Cycle Control . . . . . . . . . . . . . . . . . . . . . . . . . 187
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Harvest Assist Air Pump . . . . . . . . . . . . . . . . . . . 191
Compressor Electrical Diagnostics . . . . . . . . . 192
Diagnosing Start Components . . . . . . . . . . . . 194
Refrigeration Components . . . . . . . . . . . . . . . . . . . 197
Head Pressure Control Valve . . . . . . . . . . . . . . . 197
Harvest Pressure Regulating (HPR) System
Remote Condenser Only . . . . . . . . . . . . . . . . . . 201
Water Regulating Valve . . . . . . . . . . . . . . . . . . . 204
12
Part Number STH025 11/16
Refrigerant Recovery/Evacuation . . . . . . . . . . . . 205
Self-Contained Model Procedure . . . . . . . . . . 205
Remote Condenser Model Procedure . . . . . . 209
System Contamination Clean-Up . . . . . . . . . . . . . 215
Determining Severity Of Contamination . . . 215
Cleanup Procedure . . . . . . . . . . . . . . . . . . . . . . . 217
Replacing Pressure Controls Without
Removing Refrigerant Charge . . . . . . . . . . . . . 220
Liquid Line Filter-Driers . . . . . . . . . . . . . . . . . . . 221
Total System Refrigerant Charge . . . . . . . . . . . 222
Charts
Cycle Times/24-Hour Ice Production/ Refrigerant
Pressure Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
I0300 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
I0320 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
I0450 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
I0500 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
I0520 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
I0600 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
I0850 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
I0906 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
I1000 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
I1106 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
I1200 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
I1400 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
I1406 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
I1800 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Part Number STH025 11/16
13
Diagrams
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Wiring Diagram Legend . . . . . . . . . . . . . . . . . . . 267
I0300/I0450/I0500/I0520 - 1ph air/water . . . 268
I0320 - 1ph air/water . . . . . . . . . . . . . . . . . . . . . . 269
I0500 - 1ph Remote . . . . . . . . . . . . . . . . . . . . . . . 270
I0600/I0606/I0850/I0906/I1000/I1106/I1200 1ph air/water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
I0600/I606/I0850/I906/I1000/I1106/I1200 3ph air/water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
I0600/I606/I0850/I0906/I1000/I1106 - 1ph
Remote . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
I0600/I606/I0850/I0906/I1000/I1106 - 3ph
Remote . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
I1400/I1406/I1800 - 1ph air/water . . . . . . . . . 275
I1400/I1406/I1800 - 3ph air/water . . . . . . . . . 276
I1400/II1406/1800 1ph Remote . . . . . . . . . . . . 277
I1400/I1406/I1800 - 3ph Remote . . . . . . . . . . 278
I1400 ECM Fan Motor - 1PH air . . . . . . . . . . . . 279
I1400 ECM Fan Motor - 3PH air . . . . . . . . . . . . 280
Electrical Noise Filter . . . . . . . . . . . . . . . . . . . . . . 281
Electronic Control Board . . . . . . . . . . . . . . . . . . . . . 282
Refrigeration Tubing Schematics . . . . . . . . . . . . . 283
Self-Contained Air or Water-Cooled . . . . . . . . 283
Remote Condenser Models . . . . . . . . . . . . . . . . 285
14
Part Number STH025 11/16
Part Number STH025 11/16
Ice Machine Series
ICE MACHINE MODEL
I - Indigo Model
IB - Ice Beverage
# HERTZ
5 - 50HZ
6 - 60HZ
3 - Three Phase
No Indicator - 1 Phase
E - WRAS 50 Cycle Only
VOLTAGE
161 - 115/60/1
261 - 208-230 /60/1
251 - 230/50/1
263 - 208-230 /60/3
463 - 460/60/3
HEAD SECTIONS
HP - High Pressure Water
Regulating Valve
X - LuminIce
K - Korea
J - Japan
D - Factory Use Only
P - Correctional Model
M - Marine Model
I Y 1000 W3 – 263PHPX
CONDENSER TYPE
A - Self-Contained Air -Cooled
W - Self-Contained Water -Cooled
N - Remote Air-Cooled
C - CVD Air-Cooled
DC - IB Dice Model
YC - IB Half Dice
Base Model Number
ICE CUBE SIZE
R - Regular
D - Dice
Y - Half-Dice
Not Used On IB Models
Full Model Number
General Information
How to Read a Model Number
15
Ice Cube Sizes
Regular
Dice
Half Dice
1-1/8" x 1-1/8" x 7/8" 7/8" x 7/8" x 7/8"
3/8" x 1-1/8" x 7/8"
2.86 x 2.86 x 2.22 cm 2.22 x 2.22 x2.22 cm 0.95 x 2.86 x 2.22 cm
nWarning
All Manitowoc ice machines require the ice storage
system (bin, dispenser, etc.) to incorporate an ice
deflector.
Prior to using a non-Manitowoc ice storage system
with other Manitowoc ice machines, contact
the manufacturer to assure their ice deflector is
compatible with Manitowoc ice machines.
Model/Serial Number Location
These numbers are required when requesting
information from your local Manitowoc Distributor,
service representative, or Manitowoc Ice. The model
and serial number are listed on the OWNER WARRANTY
REGISTRATION CARD. They are also listed on the MODEL/
SERIAL NUMBER DECAL affixed to the front and rear of
the ice machine.
16
Part Number STH025 11/16
Model Numbers
AIR-WATER-REMOTE CONDENSER MODELS
Self-Contained
Air-Cooled
ID0302A
IY0304A
ID0322A
IY0324A
ID0452A
IY0454A
IR0500A
ID0502A
IY0504A
IR0520A
ID0522A
IY0524A
ID0602A
IY0604A
ID0606A
IY0606A
IR0850A
ID0852A
IY0854A
IR0906A
ID0906A
IY0906A
ID1002A
IY1004A
ID1106A
IY1106A
ID1202A
IY1204A
ID1402A
IY1404A
ID1406A
IY1406A
IR1800A
ID1802A
IY1804A
Self-Contained
Water-Cooled
ID0303W
IY0305W
ID0323W
IY0325W
D0453W
IY0455W
IR0501W
ID0503W
IY0505W
IR0521W
ID0523W
IY0525W
ID0603W
IY0605W
ID0606W
IY0606W
IR0851W
ID0853W
IY0855W
IR0906W
ID0906W
IY0906W
ID1003W
IY1005W
ID1106W
IY1106W
ID1203W
IY1205W
ID1403W
IY1405W
ID1406W
IY1406W
IR1801W
ID1803W
IY1805W
Remote
------------------IR0590N
ID0592N
IY0594N
---------ID0692N
IY0694N
ID0696N
IY0696N
IR0890N
ID0892N
IY0894N
IR0996N
ID0996N
IY0996N
ID1092N
IY1094N
ID1196N
IY1196N
------ID1492N
IY1494N
ID1496N
IY1496N
IR1890N
ID1892N
IY1894N
NOTE: Marine and Prison models have a M or P suffix - Example
ID0853WM
Suffix at the end of the model number:
3 = 3 phase unit - Example IY1004A3
Part Number STH025 11/16
17
K = Korean model.
J = Japan model
HP = High Pressure Water Regulating Valve - I0450/I0500 Water
Cooled Condenser models
Ice Machine Warranty Information
For warranty information visit:
http://www.manitowocice.com/Service/Warranty
•
Warranty Verification
•
Warranty Registration
•
View and download a copy of the warranty Owner
Warranty Registration Card
Warranty coverage begins the day the ice machine is
installed.
18
Part Number STH025 11/16
LuminIce® II
The LuminIce® growth inhibitor recirculates the air in the
ice machine foodzone over a UV bulb. This process will
inhibit the growth of common micro-organisms on all
exposed foodzone surfaces.
•
LuminIce® bulbs require replacement on a yearly
basis.
•
The control board can be set to automatically display
a reminder after 12 months.
•
A remote light is available for reminder indication.
NOTE: LuminIce® and LuminIce® II bulbs are not
interchangeable; verify your model before ordering a
replacement bulb.
Cleanup Procedure for Accidental Bulb Breakage
The cleanup procedure is identical to the procedure used
to clean up compact fluorescent (CFL) or fluorescent tube
lights. These lights contain a small amount of mercury
sealed within a glass tube. Breaking these types of lights
will release mercury and mercury vapor. The broken bulb
can continue to release mercury vapor until it is cleaned
up and removed.
The latest EPA procedures can be viewed on their website
at www.epa.gov/cfl/cflcleanup.html.
Part Number STH025 11/16
19
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20
Part Number STH025 11/16
Installation
nWarning
PERSONAL INJURY POTENTIAL
Remove all ice machine panels before lifting.
,Caution
The ice machine head section must be protected if it
will be subjected to temperatures below 32°F (0°C).
Failure caused by exposure to freezing temperatures
is not covered by the warranty. See “Removal from
Service/Winterization” on page 53
ICE DEFLECTOR
An ice deflector is required for all ice machines installed
on a bin.
Part Number STH025 11/16
21
Location of Ice Machine
The location selected for the ice machine must meet
the following criteria. If any of these criteria are not met,
select another location.
•
The location must be free of airborne and other
contaminants.
•
Self contained air and water cooled - The air
temperature must be at least 35°F (1.6°C), but must
not exceed 110°F (43.4°C).
•
Remote air cooled - The air temperature must be at
least -20°F (-29°C), but must not exceed 120°F (49°C)
•
Ice Making Water Inlet - Water Pressure must be at
least 20 psi (1.38 bar), but must not exceed 80 psi
(5.52 bar).
•
Condenser Water Inlet - Water Pressure must be at
least 20 psi (1.38 bar), but must not exceed
•
150 psi (10.34 bar).
•
The location must not be near heat-generating
equipment or in direct sunlight and protected from
weather.
•
The location must not obstruct air flow through or
around the ice machine. Refer to chart below for
clearance requirements.
•
The ice machine must be protected if it will be
subjected to temperatures below 32°F (0°C). Failure
caused by exposure to freezing temperatures is not
covered by the warranty. See “Removal from Service/
Winterization”
22
Part Number STH025 11/16
Clearance Requirements
AIR, WATER, REMOTE CONDENSER MODELS
I0300
Top/Sides
Back
I0450 - I0500
I0600 -I0606
I0850 - I0906
I1000 - I1106
Top/Sides
Back
Self-Contained
Air-Cooled
16" (40.6 cm)
5" (12.7 cm)
Self-Contained
Water-Cooled
8" (20.3 cm)
5" (12.7 cm)
Self-Contained
Air-Cooled
Water-Cooled and
Remote
8" (20.3 cm)
5" (12.7 cm)
8" (20.3 cm)
5" (12.7 cm)
Self-Contained
Water-Cooled and
Air-Cooled
Remote
Top/Sides
12" (30.5 cm)
8" (20.3 cm)
Back
5" (12.7 cm)
5" (12.7 cm)
I0500 Tropical Rating 230/50/1 Air-Cooled Only
Top
24” (61 cm)
N/A
Sides/back
12” (30.5 cm)
N/A
I0320 - I0520
Top
Sides
Back
Self-Contained
Air-Cooled
8" (20.3 cm)
12" (30.5 cm)
5" (12.7 cm)
Water-Cooled
and Remote
8" (20.3 cm)
8" (20.3 cm)
5" (12.7 cm)
I1400 - I1406
I1800
Top/Sides
Back
Self-Contained
Air-Cooled
24" (61.0 cm)
12" (30.5 cm)
Water-Cooled
and Remote
8" (20.3 cm)
5" (12.7 cm)
Remote
Condenser
JC0495
JC0895
JC0995
Jc1395
Sides
I1200
Part Number STH025 11/16
Top
Bottom
23
Ice Machine Heat of Rejection
Series Ice
Heat of Rejection
Machine
Air Conditioning*
Peak
I0300
4600
5450
I0320
3300
4500
I0450
5400
6300
I0500
6100
6900
I0520
5400
6300
I0600/I0606
9000
13900
I0850
13000
16000
I0906
12700
14800
I1000/I1106
16250
18600
I1200
20700
24500
I1400/I1406
23500
27000
I1800
30000
35000
*BTU/Hour
Because the heat of rejection varies during the ice making cycle,
the figure shown is an average.
24
Part Number STH025 11/16
Installation on a Bin
An ice deflector is required for all bin installations and is
included with all Manitowoc bins. Order the appropriate
deflector kit (30" or 48") for any bin without a deflector..
nWarning
PERSONAL INJURY POTENTIAL
Do not operate any ice machine with the deflector
removed.
Ice Machine on a Dispenser Installation
No deflector is needed for machines that match the size
of the dispenser (30" head section on a 30" dispenser)
unless required by the dispenser manufacturer. Adapters
are required when a smaller ice machine is going on a
larger dispenser (22" machine on a 30" dispenser).
Part Number STH025 11/16
25
Lineset Applications
nWarning
The 60-month compressor warranty (including the
36-month labor replacement warranty) will not
apply if the Manitowoc Ice Machine, Condenser or
QuietQube® Condensing Unit were not installed
according to specifications. This warranty also will
not apply if the refrigeration system is modified with
a condenser, heat reclaim device, or other parts or
assemblies not manufactured by Manitowoc Ice.
,Caution
Recovery locations vary by model. Verify you are
making the correct connections for your model
to prevent accidental release of high pressure
refrigerant.
Importan
Manitowoc remote systems are only approved and
warranted as a complete new package. Warranty on
the refrigeration system will be void if new equipment
is connected to pre-existing (used) tubing, remote
condenser, remote condensing unit or ice machine
head section.
26
Part Number STH025 11/16
REMOTE CONDENSER
Ice Machine
Remote Single
Circuit Condenser
I0590N
JC0495
I0690N
I0696N
I0890N
I0996N
I1090N
I1196N
I1490N
I1496N
I1890N
*Line Set
RT
RL
JC0895
JC0995
JC1395
Discharge Line
1/2" (1.27 cm)
1/2" (1.27 cm)
Line Set*
RT-20-R404A
RT-35-R404A
RT-50-R404A
RT-20-R404A
RT-35-R404A
RT-50-R404A
RT-20-R404A
RT-35-R404A
RT-50-R404A
RL-20-R404A
RL-35-R404A
RL-50-R404A
Liquid Line
5/16" (.79 cm)
3/8" (.95 cm)
Air Temperature Around the Condenser
Minimum
Maximum
-20°F (-29°C)
120°F (49°C)
Part Number STH025 11/16
27
Additional Refrigerant Charge For 51' to 100' Line Sets
Ice Machine
Condenser
I0590N
I0690N
I0696N
I0890N
I0996N
I1090N
I1196N
I1490N
I1496N
I1890N
JC0495
JC0895
JC0895
JC0895
JC0995
JC0995
JC0995
JC1395
JC1395
JC1395
28
Additional Amount of
Refrigerant To Be Added
To Nameplate Charge
1.5 lbs - 680g
1.5 lbs - 680g
2 lbs - 907g
2 lbs - 907g
2 lbs - 907g
2 lbs - 907g
2 lbs - 907g
2 lbs - 907g
2 lbs - 907g
2 lbs - 907g
Part Number STH025 11/16
Calculating Allowable Lineset Distance
Line Set Length
The maximum length is 100' (30.5 m).
Line Set Rise/Drop
The maximum rise is 35' (10.7 m).
The maximum drop is 15' (4.5 m).
35 FT. (10.7 M)
MAXIMUM
DISTANCE
35 ft. (10.7 m) Rise: The maximum distance the
Condenser or Condensing Unit can be above the ice
machine.
15 FT. (4.5 M)
MAXIMUM
DISTANCE
15 ft. (4.5 m) Drop: The maximum distance the
Condenser or Condensing Unit can be below the ice
machine.
Part Number STH025 11/16
29
Calculated Line Set Distance
The maximum calculated distance is 150' (45.7 m).
Line set rises, drops, horizontal runs (or combinations
of these) in excess of the stated maximums will exceed
compressor start-up and design limits. This will cause
poor oil return to the compressor.
Make the following calculations to make sure the line set
layout is within specifications.
1. Insert the measured rise into the formula below.
Multiply by 1.7 to get the calculated rise.
(Example: A condenser located 10 feet above the ice
machine has a calculated rise of 17 feet.)
2. Insert the measured drop into the formula below.
Multiply by 6.6 to get the calculated drop.
(Example. A condenser located 10 feet below the ice
machine has a calculated drop of 66 feet.)
3. Insert the measured horizontal distance into the
formula below. No calculation is necessary.
4. Add together the calculated rise, calculated drop,
and horizontal distance to get the total calculated
distance. If this total exceeds 150' (45.7 m), move
the condenser to a new location and perform the
calculations again.
30
Part Number STH025 11/16
Maximum Line Set Distance Formula
Step 1
Measured Rise ____ X 1.7 = ______Calculated Rise
(35 ft. Max)
Step 2
Measured Drop ____ X 6.6 = ______Calculated Drop
(15 ft. Max.)
Step 3
Measured Horizontal Distance = _________Horizontal
(100 ft. Max.)
Distance
Step 4
Total Calculated Distance = ________Total Calculated
(150 ft. Max.)
Distance
Part Number STH025 11/16
31
Remote Ice Machine Usage with NonManitowoc Multi-Circuit Condensers
Warranty
The sixty (60) month compressor warranty, including
thirty six (36) month labor replacement warranty, shall
not apply when the remote ice machine is not installed
within the remote specifications. The foregoing warranty
shall not apply to any ice machine installed and/or
maintained inconsistent with the technical instructions
provided by Manitowoc Ice. Performance may vary from
Sales specifications. ARI certified standard ratings only
apply when used with a Manitowoc remote condenser.
If the design of the condenser meets the specifications,
Manitowoc’s only approval is for full warranty coverage
to be extended to the Manitowoc manufactured part of
the system. Since Manitowoc does not test the condenser
in conjunction with the ice machine, Manitowoc will not
endorse, recommend, or approve the condenser, and will
not be responsible for its performance or reliability.
Importan
I
Manitowoc warrants only complete new and unused
remote packages. Guaranteeing the integrity of a
new ice machine under the terms of our warranty
prohibits the use of pre-existing (used) tubing or
condensers.
32
Part Number STH025 11/16
Head Pressure Control Valve
Any remote condenser connected to a Manitowoc
Ice Machine must have a head pressure control valve
(available from Manitowoc Distributors) installed on the
condenser package. Manitowoc will not accept substitute
“off the shelf” head pressure control valves
,CAUTION
Do not use a fan cycling control to try to maintain
discharge pressure. Compressor failure will result.
Fan Motor
The condenser fan must be on during the complete ice
machine freeze cycle (do not cycle on fan cycle control).
The ice maker has a condenser fan motor circuit for use
with a Manitowoc condenser. It is recommended that
this circuit be used to control the condenser fan(s) on the
multi-circuit condenser to assure it is on at the proper
time. Do not exceed the rated amps for the fan motor
circuit listed on the ice machine’s serial tag.
Internal Condenser Volume
The multi-circuit condenser internal volume must not be
less than or exceed that used by Manitowoc (see chart on
next page). Do not exceed internal volume and try to add
charge to compensate, as compressor failure will result.
Part Number STH025 11/16
33
Condenser ∆T
∆T is the difference in temperature between the
condensing refrigerant and entering air. The ∆T should be
15 to 20°F (-9.4 to -6.6°C) at the beginning of the freeze
cycle (peak load conditions) and drop down to 12 to 17°F
(-11.1 to -8.3°C) during the last 75% of the freeze cycle
(average load conditions).
Refrigerant Charge
Remote ice machines have the serial plate refrigerant
charge (total system charge) located in the ice maker
section. (Remote condensers and line sets are supplied
with only a vapor charge.)
,CAUTION
Never add more than nameplate charge to ice
machine for any application.
Quick Connect Fittings
The ice machine and line sets come with quick connect
fittings. It is recommended that matching quick connects
(available through Manitowoc Distributors) be installed
in the multi-circuit condenser, and that a vapor “holding”
charge, 5 oz. (150 ml), of proper refrigerant be added to
the condenser prior to connection of the ice machine or
line set to the condenser.
34
Part Number STH025 11/16
Part Number STH025 11/16
35
i0590
i0690
I0696
i0890
i0990
I0996
i1090
i1190
I1196
i1490
I1496
i1890
Ice
Machine
Model
6 lbs.
6.5 lbs.
8.5 lbs.
7 lbs.
8.5 lbs.
11 lbs.
12.5 lbs.
R404A
R404A
R404A
R404A
R404A
Charge
R404A
R404A
Type
Refrigerant
30000
23500
16250
13000
13000
Average
Btu/hr
6100
9000
35000
27000
18600
16000
16000
Peak Btu/
hr
6900
13900
Heat of Rejection
0.085
0.085
0.045
0.045
0.045
0.020
0.045
Min
0.105
0.105
0.060
0.060
0.060
0.035
0.060
Max
Internal Condenser
Volume (cu ft)
Design
Quick Connect Stubs
Head
& Burst
Male Ends
Pressure
Pressure
Control
500 psig Discharge Liquid
Valve
2500 psig
Design
coupling coupling
P/N
500 psig
P/N
P/N
8368093
(3447 kpa) 8360353
8360343
(34.7 bar)
Burst
2500 psig
(17237
kpa)
(172.37
bar)
mounting mounting
no
flange P/N flange P/N substitutes
8360063
8360053
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36
Part Number STH025 11/16
Maintenance
Cleaning and Sanitizing
GENERAL
You are responsible for maintaining the ice machine
in accordance with the instructions in this manual.
Maintenance procedures are not covered by the warranty.
Clean and sanitize the ice machine every six months
for efficient operation. If the ice machine requires
more frequent cleaning and sanitizing, consult a
qualified service company to test the water quality and
recommend appropriate water treatment. An extremely
dirty ice machine must be taken apart for cleaning and
sanitizing.
Manitowoc Ice Machine Cleaner and Sanitizer are the only
products approved for use in Manitowoc ice machines.
Part Number STH025 11/16
37
,Caution
Use only Manitowoc approved Ice Machine Cleaner
and Sanitizer for this application (Manitowoc Cleaner
part number 9405463 and Manitowoc Sanitizer part
number 9405653). It is a violation of Federal law to
use these solutions in a manner inconsistent with
their labeling. Read and understand all labels printed
on bottles before use.
,Caution
Do not mix Cleaner and Sanitizer solutions together.
It is a violation of Federal law to use these solutions in
a manner inconsistent with their labeling.
nWarning
Wear rubber gloves and safety goggles (and/or
face shield) when handling Ice Machine Cleaner or
Sanitizer.
38
Part Number STH025 11/16
CLEANING/SANITIZING PROCEDURE
This procedure must be performed a minimum of once
every six months.
•
The ice machine and bin must be disassembled
cleaned and sanitized.
•
All ice produced during the cleaning and sanitizing
procedures must be discarded.
•
Removes mineral deposits from areas or surfaces that
are in direct contact with water.
PREVENTATIVE MAINTENANCE CLEANING
PROCEDURE
•
This procedure cleans all components in the water
flow path, and is used to clean the ice machine
between the bi-yearly cleaning/sanitizing procedure.
•
This technology will also allow initiation and
completion of a clean or sanitize cycle, after which
the ice machine automatically starts ice making
again.
EXTERIOR CLEANING
Clean the area around the ice machine as often as
necessary to maintain cleanliness and efficient operation.
Wipe surfaces with a damp cloth rinsed in water to
remove dust and dirt from the outside of the ice machine.
If a greasy residue persists, use a damp cloth rinsed in a
mild dish soap and water solution. Wipe dry with a clean,
soft cloth.
The exterior panels have a clear coating that is stain
resistant and easy to clean. Products containing abrasives
will damage the coating and scratch the panels.
•
Never use steel wool or abrasive pads for cleaning.
•
Never use chlorinated, citrus based or abrasive
cleaners on exterior panels and plastic trim pieces.
Part Number STH025 11/16
39
Cleaning / Sanitizing Procedure
,Caution
Use only Manitowoc approved Ice Machine Cleaner
and Sanitizer for this application (Manitowoc Cleaner
part number 94-0546-3 and Manitowoc Sanitizer part
number 94-0565-3). It is a violation of Federal law to
use these solutions in a manner inconsistent with
their labeling. Read and understand all labels printed
on bottles before use.
CLEANING PROCEDURE
,Caution
Do not mix Cleaner and Sanitizer solutions together.
It is a violation of Federal law to use these solutions in
a manner inconsistent with their labeling.
nWarning
Wear rubber gloves and safety goggles (and/or
face shield) when handling Ice Machine Cleaner or
Sanitizer.
Ice machine cleaner is used to remove lime scale and
mineral deposits. Ice machine sanitizer disinfects and
removes algae and slime.
NOTE: Although not required and dependent on your
installation, removing the ice machine top cover may
allow easier access.
40
Part Number STH025 11/16
Step 1 Open the front door to access the evaporator
compartment. Ice must not be on the evaporator during
the clean/sanitize cycle. Follow one of the methods
below:
•
Press the power switch at the end of a harvest cycle
after ice falls from the evaporator(s).
•
Press the power switch and allow the ice to melt.
,Caution
Never use anything to force ice from the evaporator.
Damage may result.
Step 2
Remove all ice from the bin/dispenser.
Step 3 Press the clean switch. Water will flow through
the water dump valve and down the drain. Wait until the
water trough refills and the display indicates add solution
(approximately 1 minute), then add the proper amount of
ice machine cleaner.
Model
I0300/I0320/I0520
I0450/I0500/I0600/I0606/I0850
I0906/I1000/I1106/I1200
I1400/I1406/I1800
Part Number STH025 11/16
Amount of Cleaner
3 ounces (90 ml)
5 ounces (150 ml)
9 ounces (265 ml)
41
Step 4 Wait until the clean cycle is complete
(approximately 24 minutes). Then disconnect power to
the ice machine (and dispenser when used).
nWarning
Disconnect the electric power to the ice machine at
the electric service switch box.
Step 5
Remove parts for cleaning.
Please refer to the proper parts removal for your ice
machine. Continue with step 6 when the parts have been
removed.
Single Evaporator Ice Machines - page 48
Step 6 Mix a solution of cleaner and lukewarm water.
Depending upon the amount of mineral buildup, a larger
quantity of solution may be required. Use the ratio in the
table below to mix enough solution to thoroughly clean
all parts.
Solution Type
Cleaner
Water
1 gal. (4 L)
Mixed With
16 oz (500 ml)
cleaner
,CAUTION
Do not clean the ice thickness probe in a dishwasher.
Permanent damage to the ice thickness probe will
occur.
42
Part Number STH025 11/16
Step 7 Use 1/2 of the cleaner/water mixture to clean
all components. The cleaner solution will foam when
it contacts lime scale and mineral deposits; once the
foaming stops use a soft-bristle nylon brush, sponge or
cloth (NOT a wire brush) to carefully clean the parts. Soak
parts for 5 minutes (15 - 20 minutes for heavily scaled
parts). Rinse all components with clean water.
Step 8 While components are soaking, use 1/2 of the
cleaner/water solution to clean all food zone surfaces of
the ice machine and bin (or dispenser). Use a nylon brush
or cloth to thoroughly clean the following ice machine
areas:
•
Side walls
•
Base (area above water trough)
•
Evaporator plastic parts - including top, bottom, and
sides
•
Bin or dispenser
Rinse all areas thoroughly with clean water.
SANITIZING PROCEDURE
Step 9
Mix a solution of sanitizer and lukewarm water.
Solution Type
Sanitizer
Water
3 gal. (12 L)
Mixed With
2 oz (60 ml) sanitizer
Step 10 Use 1/2 of the sanitizer/water solution to
sanitize all removed components. Use a spray bottle to
liberally apply the solution to all surfaces of the removed
parts or soak the removed parts in the sanitizer/water
solution. Do not rinse parts after sanitizing.
Part Number STH025 11/16
43
Step 11 Use 1/2 of the sanitizer/water solution to
sanitize all food zone surfaces of the ice machine and bin
(or dispenser). Use a spray bottle to liberally apply the
solution. When sanitizing, pay particular attention to the
following areas:
•
Side walls
•
Base (area above water trough)
•
Evaporator plastic parts - including top, bottom and
sides
•
Bin or dispenser
Do not rinse the sanitized areas.
Step 12 Replace all removed components.
Step 13 Wait 20 minutes.
Step 14 Reapply power to the ice machine and press
the Clean button.
44
Part Number STH025 11/16
Step 15 Wait until the water trough refills and the
display indicates add solution (approximately 1 minute).
Add the proper amount of Manitowoc Ice Machine
Sanitizer to the water trough by pouring between the
water curtain and evaporator.
Model
I0300/I0320/I0520
I0450/I0500/I0600/I0606/I0850
I0906/I1000/I1106/I1200
I1400/I1406/I1800
Amount of Sanitizer
3 ounces (90 ml)
3 ounces (90 ml)
6 ounces (180 ml)
Step 16 Select Auto Ice On, press the Checkmark and
close and secure the front door. The ice machine will
automatically start ice making after the sanitize cycle is
complete (approximately 24 minutes).
Part Number STH025 11/16
45
PARTS REMOVAL FOR CLEANING/SANITIZING
D
E
A
C
B
Off
On / Off Mode
[
!
]
A. Remove the water curtain
•
Gently flex the curtain in the center and remove it
from the right side.
•
Slide the left pin out.
B. Remove the water trough
•
Depress tabs on right and left side of the water
trough.
•
Allow front of water trough to drop as you pull
forward to disengage the rear pins.
C. Remove the water level probe
•
Pull the water level probe straight down to
disengage.
•
Lower the water level probe until the wiring
connector is visible.
•
Disconnect the wire lead from the water level probe.
•
Remove the water level probe from the ice machine.
46
Part Number STH025 11/16
D. Remove the ice thickness probe
•
Compress the hinge pin on the top of the ice
thickness probe.
•
Pivot the ice thickness probe to disengage one
pin then the other. The ice thickness probe can be
cleaned at this point without complete removal.
If complete removal is desired, disconnect the ice
thickness control wiring from the control board.
E. Remove the water distribution tube
NOTE: Distribution tube thumbscrews are retained
to prevent loss. Loosen thumbscrews but do not pull
thumbscrews out of distribution tube.
•
Loosen the two outer screws (do not remove screws
completely they are retained to prevent loss) and pull
forward on the distribution tube to release from slip
joint.
•
Disassemble distribution tube by loosening the two
(2) middle thumbscrews and dividing the distribution
tube into two pieces.
Proceed to page 44, Step 6
Part Number STH025 11/16
47
Ice Thickness Probe & Water Level Probe
Clean the probes using the following procedure.
1. Mix a solution of Manitowoc ice machine cleaner
and water (2 ounces of cleaner to 16 ounces of
water) in a container.
2. Clean all probe surfaces including all plastic parts
(do not use abrasives). Verify all surfaces are clean.
Thoroughly rinse probes with clean water.
3. Reinstall probe, then sanitize the ice machine and
bin/dispenser interior surfaces.
48
Part Number STH025 11/16
Water Inlet Valve
The water inlet valve normally does not require removal
for cleaning. Refer to “Water System Checklist” page 136,
if you are troubleshooting water related problems.
1. When the ice machine is off, the water inlet valve
must completely stop water flow into the machine.
Watch for water flow.
When the ice machine is on, the water inlet valve must
allow the proper water flow through it. Press the Power
button to energize the ice machine. Watch for water
flow into the ice machine. If the water flow is slow or
only trickles into the ice machine, refer to water system
checklist.
nWarning
Disconnect the electric power to the ice machine and
dispenser at the electric service switch box and turn
off the water supply before proceeding.
Part Number STH025 11/16
49
Water Dump Valve
The water dump valve normally does not require removal
for cleaning. To determine if removal is necessary:
1. Locate the water dump valve.
2. Press the power button and stop ice making.
3. While the ice machine is in the freeze mode, check
the water trough to determine if the dump valve
is leaking. If there is no or little water in the water
trough (during the freeze cycle) the dump valve is
leaking.
A. If the dump valve is leaking, remove,
disassemble and clean it.
B.
50
If the dump valve is not leaking, do not remove
it. Instead, follow the “Ice Machine Cleaning
Procedure”.
Part Number STH025 11/16
Preventative Maintenance Cleaning
Procedure
This procedure cleans all components in the water flow
path, and is used to clean the ice machine between the
bi-yearly cleaning/sanitizing procedure.
Ice machine cleaner is used to remove lime scale and
mineral deposits. Ice machine sanitizer disinfects and
removes algae and slime.
NOTE: Although not required and dependant on your
installation, removing the ice machine top cover may
allow easier access.
1. Ice must not be on the evaporator during the clean/
sanitize cycle. Follow one of the methods below:
•
Press the power switch at the end of a harvest cycle
after ice falls from the evaporator(s).
•
Press the power switch and allow the ice to melt.
,Caution
Never use anything to force ice from the evaporator.
Damage may result.
2. Open the front door to access the evaporator.
Part Number STH025 11/16
51
3. Press the Clean button. Water will flow through the
water dump valve and down the drain. Wait until the
water trough refills and the display indicates “Add
Chemical” (approximately 1 minute), then add the
proper amount of ice machine cleaner.
Model
I0300/I0320/I0520
I0450/I0500/I0600/I0606/I0850
I0906/I1000/I1106/I1200
I1400/I1406/I1800
Amount of Cleaner
3 ounces (90 ml)
5 ounces (150 ml)
9 ounces (265 ml)
4. Select “Auto Ice On”, press the Checkmark and close
and secure the front door. The ice machine will
automatically start ice making after the clean cycle is
complete (approximately 24 minutes).
52
Part Number STH025 11/16
Removal from Service/Winterization
General
Special precautions must be taken if the ice machine is
to be removed from service for an extended period of
time or exposed to ambient temperatures of 32°F (0°C) or
below.
,Caution
If water is allowed to remain in the ice machine in
freezing temperatures, severe damage to some
components could result. Damage of this nature is
not covered by the warranty.
Follow the applicable procedure below.
AIR-COOLED ICE MACHINES
1. Press the power button.
2. Turn off the water supply.
3. Remove the water from the water trough.
4. Disconnect and drain the incoming ice-making
water line at the rear of the ice machine.
5. Energize the ice machine and wait one minute for
the water inlet valve to open.
6. Blow compressed air in both the incoming water and
the drain openings in the rear of the ice machine
until no more water comes out of the water inlet
lines or the drain.
7. Disconnect the electric power at the circuit breaker
or the electric service switch.
8. Make sure water is not trapped in any of the water
lines, drain lines, distribution tubes, etc.
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WATER-COOLED ICE MACHINES
1. Perform steps 1-6 under “Self-Contained Air-Cooled
Ice Machines.”
2. Disconnect the incoming water and drain line from
the water-cooled condenser.
3. Energize the ice machine in the freeze cycle. The
increasing refrigerant pressure will open the water
regulating valve.
4. Blow compressed air through the condenser until no
water remains.
54
Part Number STH025 11/16
Operation
Power Button
Cleaning Button
Manitowoc
LCD Display
Navigation Arrows
Menu
Button
Checkmark
Control Panel Features
The control panel offers a series of pressure sensitive
buttons and a four-line interactive display panel.
BUTTONS
Power Button: Powers the ice machine when in the On/
Off Mode. The ice machine can also be programmed
to automatically power on and off in two Energy Saver
modes.
Cleaning Button: Initiates a cleaning cycle. Refer to the
Maintenance section for details.
Part Number STH025 11/16
55
Menu Button: Accesses main menu structure. Moves the
display from the Home Screen, where ice machine status,
alerts and messages are viewed, to the Main Menu, where
machine information and its event log can be accessed,
machine and Energy Saver settings can be adjusted, and
service issues can be addressed.
Left and Right Arrows: The Left arrow moves the display
to the previous screen, allowing the user to “back out”
of programming. Both the Left and Right arrows will
move the cursor (underline) within a line of settings.
NOTE: The Right arrow can also be used on many screens
interchangeably with the checkmark to make a selection.
Up and Down Arrows: Move the highlight [brackets] up
one line or down one line.
Checkmark: Makes a selection and/or moves to the next
screen (or line) and is used like an “enter” button.
DISPLAY PANEL
The LCD display panel is 16 characters wide and four
lines deep. During ice machine operation and cleaning
cycles, the Home screen’s top three lines provide valuable
status information and the fourth line shows alerts and
messages. In programming, four lines of the current
screen are displayed and highlights, arrows, cursor and
selections inform the user of available actions.
56
Part Number STH025 11/16
Menu Navigation Overview
Menu Button
ON/OFF Button
Cleaning Button
Timer Initiated
Home Screen
When
Alert
Present
When
Message
Present
Alerts
Messages
AuCS Clean
Function
Clean
Function
Main Menu
Machine
Info
Energy
Saver
Set-up
Password Entry
(Optional)
90/70 Capacity
Model Number
Ice Machine Head Serial Number
Condenser Serial Number
Warranty
Install Date
Manufacture Date
Main Software Version
Display Software Version
Exit
Language
Time/Date
Time Config
Units
Ice Clarity
LCD Brightness
Password On
Edit Password
Clean Minder
AuCS Run Time
Air Filter
Water Filter
LUMINICE
Ice Bin Sensor
USB Setup
Exit
Defaults
Service
EXIT
Defaults
Exit
Ice Program
Water Miser
Statistics
Exit
Press to power ON/OFF
Return to
Home Screen
Data History
Real Time Data
Diagnostics
Manual Harvest
Replace Control Board
USB Setup
Event Log
Exit
Press to access cleaning function
Press to access Main Menu
Press to select menu/sub-menu option
Navigate Menus
NOTE: The ice machine will automatically set the
installation date after 100 freeze/harvest cycles.
Part Number STH025 11/16
57
Display Panel Navigation
[Language
Time & Date
Time Config
Units
>]▼
>
>
> ▼
Highlights: Brackets indicate if a line on the screen is
“highlighted” or actionable. Move the brackets from line
to line using the Down or Up arrow. Move the brackets
down from the fourth line to view more of the menu
displayed.
Arrows: Two kinds of arrows give cues to additional
information. “>” symbols show that another screen is
available by pressing Checkmark or > while a line is
highlighted. “▼” and “▲” symbols indicate the limits of
the screen viewed. NOTE: Another cue to the length of a
menu screen is that Exit is the last item.
07 24 10
14:08
Exit
58
>
Part Number STH025 11/16
Cursor: A cursor (flashing rectangle) is used within lines
where actual settings can be adjusted. In these screens,
use the Up and Down arrows to make changes to the
value underlined. Move the cursor from digit to digit
using the Right and Left arrows. Use the Checkmark to
move the cursor down one line. Exit and re-enter the
screen to start again at the top.
[Mo/Day/Yr
Day/Mo/Yr
12 Hour
24 Hour
(
(
(
(
)]▼
)
)
) ▼
Selections: When parentheses ( ) appear, they indicate
a selection is available by pressing Checkmark while the
line is highlighted. If the choice is exclusive, selecting it
with the Checkmark will uncheck another selection. That
is, in the above Time Config example, selecting Day/Mo/
Yr will deselect Mo/Day/Yr.
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Alerts and Messages
When messages and alerts exist, they will be highlighted
and can be selected with the Left arrow. Alerts displayed
will have priority over messages.
Off
On / Off Mode
[< !
]
For example, if alerts are appearing in the fourth line of
the display:
1. Press the Left arrow. A list of alerts will appear in the
display.
2. Choose the alert you wish to address by moving the
highlight brackets with the Down arrow.
3. Press Checkmark again. A screen appears with the
date, time and total number of times an alert has
occurred. Pressing the Down arrow will list some
possible causes for the alert. At the bottom of the
screen you will be able to clear the alert by pressing
the Checkmark.
4. Return to the Home screen by selecting Exit and
pressing the Checkmark.
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Part Number STH025 11/16
Main Menu
From the Home screen, press the Menu button to enter
the Main menu, where you can choose to see machine
information, make setup changes, set the Energy Saver
mode, or enter the Service Menu.
Machine Info
Set-Up
Energy Saver
Factory Defaults
Service
Exit
Main Menu
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Machine Info Menu
From the Main menu, ensure that Machine Info is
highlighted and press the Checkmark to view a list
including capacity, model number, IMH (Ice Machine
Head) serial number, condenser serial number, warranty,
installation date, date of manufacture and software
version. Use the Down arrow to highlight an item and use
the Checkmark to view the information. Press the Left
arrow to return to previous screens.
Machine Info Menu
•
90/70 capacity
•
Model #
•
Ice Machine Head Serial #
•
Condenser Serial #
•
Warranty
•
Machine
•
Evaporator
•
Compressor
•
Install Date
•
Manufacture Date
•
Main Control Board Software Version
•
Display Software Version
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Part Number STH025 11/16
Password Entry
A password is not required, although a password can
be turned on to prevent unauthorized control setting
modification. You can use the Factory Default Password
of “1234” or enter a four digit custom pin number of your
choosing.
To turn on the password feature use the following
procedure.
1. Press the Menu button.
2. From the Main menu, use the Down arrow to
highlight setup and press the Right arrow.
3. Use the Down arrow to highlight Password ON and
press the Right arrow.
4. Press the Right arrow again with Enter Passwrd
highlighted and a cursor will flash.
5. Use the Up & Down arrows to enter the factory
password (1, 2, 3, 4). Enter the number 1 in the
flashing cursor (first digit of the factory password).
6. Press the right arrow to move to the next cell and
use the Up & Down arrows to add the number 2.
Repeat this process to add 3 & 4.
7. When the last number is entered press the
Checkmark button to save your entry.
[
Enter Passwrd ▲
]
Exit
>
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To enter a four digit password of your choosing use
the following procedure.
1. Press the Menu button.
2. From the Main menu, use the Down arrow to
highlight setup and press the Right arrow.
3. Use the Down arrow to select Edit Password and
press the Right arrow.
4. Using the Up & Down arrows, enter the first digit of
the factory password in the flashing icon.
5. Press the right arrow to move to the next cell and
use the Up & Down arrows to add the number 2.
Repeat this process to add 3 & 4.
6. When the last number is entered press the
Checkmark button.
7. Follow steps 4 & 5 and enter your 4 digit password.
8. When the last number is entered press the
Checkmark button to save your entry.
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Part Number STH025 11/16
RESET PASSWORD TO FACTORY DEFAULTS
The password can be reset to the factory defaults when
required. The default factory password is 1234.
The entire setup can be reset to the factory defaults.
1. From the Set-Up menu, use the Down arrow to
highlight Fact Deflts.
2. Press the Checkmark two times to reset the ice
machine. The display will return to the Set-Up menu.
Setting
Language
Time Configuration
Units
Ice Clarity
LCD Brightness
Password
Edit Password
Clean Minder
AuCS RunTime
Air Filter Minder
Water Filter Minder
LuminIce Bulb Minder
Ice Bin Sensor
Part Number STH025 11/16
Default
English
Mo/Day/Yr/24 Hour
Fahrenheit/Lbs/Gallons
Off
Level 2
Off - Enter Password
Default Password = 1234
Off - Edit Password
Off
Off
Off
Auto
No
None
65
Set-Up Menu
From the Main menu, use the Down arrow to navigate to
Set-Up and press the Checkmark. Select and customize
machine settings on this menu. Press the Left arrow to
return to previous screens.
Set-Up
Language
Time & Date
Time Configuration
Units
Ice Clarity
LCD Bright
Password On
Edit Password
Clean Minder
AuCS RunTime
Air Filter
Water Filter
LUMINICE
Ice Bin Sensor
USB Setup
Exit
Set-Up Menu
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Part Number STH025 11/16
LANGUAGE
1. From the Set-Up menu, use the Down arrow to
highlight Language.
2. Press the Checkmark. You can choose to view
the display in a language other than English,
by highlighting your choice and pressing the
Checkmark. Selecting one language will deselect the
others.
3. When the check reflects your preference, use the
Down arrow to navigate to Exit and press the
Checkmark. The display will return to the Set-Up
menu.
TIME & DATE
When the ice machine is installed, the correct time and
date needs to be set for its location.
[Mo/Day/Yr
Day/Mo/Yr
12 Hour
24 Hour
(
(
(
(
)]▼
)
)
) ▼
Set the Time and Date
1. Press the Menu button.
2. Press the Down arrow until Set-Up is highlighted
[bracketed].
3. Press the Checkmark. The Set-Up menu will be
displayed and Time & Date will be highlighted
[bracketed].
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4. Press the Checkmark. The date will appear on the
first line of the display (Mo/Day/Yr) and the time will
appear on the second line (24 Hour). The month will
have a blinking cursor.
5. Using the Up or Down arrow, adjust the month, if
necessary.
6. When the correct month appears, use the Right
arrow to move the blinking cursor to day.
7. Using the Up or Down arrow, adjust the day, if
necessary.
8. When the correct day appears, use the Right arrow
to move the blinking cursor to year.
9. Using the Up or Down arrow, adjust the year, if
necessary.
10. When the correct year appears, press the Checkmark.
Use the Right arrow to move the blinking cursor to
hour.
11. Using the Up or Down arrow, adjust the hour, if
necessary.
12. When the correct hour appears, use the Right arrow
to move the blinking cursor to minutes.
13. Using the Up or Down arrow, adjust the minutes, if
necessary.
14. When the correct minutes appear, press the
Checkmark twice.
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Part Number STH025 11/16
TIME CONFIGURATION
1. From the Set-Up menu, use the Down arrow to
highlight Time Config.
2. Press the Checkmark. On this screen, you can choose
whether the date will be displayed as Mo/Day/Yr or
Day/Mo/Yr by highlighting your choice and pressing
the Checkmark. Selecting one will deselect the other.
3. You can also choose whether the time will be
displayed as 12 Hour or 24 Hour by highlighting your
choice and pressing the Checkmark. Selecting one
will deselect the other.
4. When the two checks reflect your preference, use
the Down arrow to navigate to Exit and press the
Checkmark. The display will return to the Set-Up
menu.
UNITS
1. From the Set-Up menu, use the Down arrow to
highlight Units.
2. Press the Checkmark. On this screen, you can choose
whether the ice machine will display measurements
in Celsius or Fahrenheit, kilograms or pounds, and
gallons or liters by highlighting your choice of each
pair and pressing the Checkmark. Selecting one
of each pair will deselect the other. Make sure to
navigate with the Down arrow to make all three
choices.
3. When the three checks reflect your preferences, use
the Down arrow to navigate to Exit and press the
Checkmark. The display will return to the Set-Up
menu.
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ICE CLARITY
In areas with poor potable water quality, the ice machine
may produce cloudier ice. Setting Ice Clarity to ON will
add additional water during the freeze cycle to dilute the
water that contains a high content of dissolved solids in
the water trough. This feature decreases production and
increases water usage. A water filter is recommended to
produce the highest quality ice while maintaining the
least expensive mode of operation.
1. From the Set-Up menu, use the Down arrow to
highlight Ice Clarity.
2. Press the Checkmark. On this screen, you can
choose to turn the ice clarity feature ON or OFF
by highlighting your choice and pressing the
Checkmark. Selecting one will deselect the other.
3. When the check reflects your preference, use the
Down arrow to navigate to Exit and press the
Checkmark. The display will return to the Set-Up
menu.
LCD BRIGHTNESS
Here, the brightness of the LCD display can be adjusted.
1. From the Set-Up menu, use the Down arrow to
highlight LCD Bright.
2. Press the Checkmark. You will see one of four
checkmarks indicating the brightness levels of the
display. Level 1 is one checkmark, level 2 is two
checkmarks, Level 3 is three checkmarks, etc.
3. Use the Up and Down arrows to select your
preference.
4. When the checkmarks reflect your preference, press
the Checkmark. The display will return to the Set-Up
menu.
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Part Number STH025 11/16
PASSWORD ON
A password can be added to prevent unauthorized
changes to ice machine settings.
1. From the Set-Up menu, use the Down arrow to
highlight Password On.
2. Enter the password and press the Checkmark.
3. Press the Left arrow to return to previous screens
and to the Set-Up menu.
EDIT PASSWORD
The password can be changed on this screen.
1. From the Set-Up menu, use the Down arrow to
highlight Edit Password.
2. Press the Checkmark and confirm current password.
3. Enter new password and press the Checkmark.
4. Press the Left arrow to return to previous screens
and to the Set-Up menu.
CLEAN MINDER
Clean Minder is a feature that displays a cleaning
reminder at a set time interval.
1. From the Set-Up menu, use the Down arrow to
highlight Clean Minder.
2. Press the Checkmark. On this screen, you can choose
to turn the reminder ON or OFF by highlighting your
choice and pressing the Checkmark. Selecting one
will deselect the other.
3. You can also choose the time interval from this
screen by highlighting Set Interval and pressing the
Checkmark.
4. Press the Left arrow to return to previous screens
and to the Set-Up menu.
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IAUCS RUNTIME
Automatic Cleaning System is an optional accessory and
will perform a cleaning cycle at a set time interval.
1. From the Set-Up menu, use the Down arrow to
highlight AuCS RunTime.
2. Press the Checkmark. On this screen, you can choose
to turn the feature ON or OFF by highlighting your
choice and pressing the Checkmark. Selecting one
will deselect the other.
3. You can also choose the time interval from this
screen by highlighting Set Interval and pressing the
Checkmark.
4. Press the Left arrow to return to previous screens
and to the Set-Up menu.
AIR FILTER
The ice machine has a feature that displays a clean air
filter reminder at a set time interval.
1. From the Set-Up menu, use the Down arrow to
highlight Air Filter.
2. Press the Checkmark. On this screen, you can choose
to turn the reminder to AUTO or OFF by highlighting
your choice and pressing the Checkmark. Selecting
one will deselect the other.
3. You can also choose the time interval from this
screen by highlighting Set Interval and pressing the
Checkmark.
4. Press the Left arrow to return to previous screens
and to the Set-Up menu.
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Part Number STH025 11/16
WATER FILTER
The ice machine has a feature that displays a replace
water filter reminder at a set time interval.
1. From the Set-Up menu, use the Down arrow to
highlight Water Filter.
2. Press the Checkmark. You can record the filter
type on this screen by highlighting Filter Type and
pressing the Checkmark. After making your selection
(AR10,000, AR20,000, AR40,000), scroll down to exit
and press the Checkmark.
3. You can also choose to turn the reminder to AUTO,
NONE or OFF by highlighting your choice and
pressing the Checkmark. Selecting one will deselect
the other.
• Selecting Auto sets the reminder based on water
usage for the selected filter.
• Selecting None will turn off the reminder.
• Selecting Off sets the timer to the selected
reminder time (2 weeks to 6 months).
4. You can further choose the time interval from this
screen by highlighting Set Interval and pressing the
Checkmark.
5. Press the Left arrow to return to previous screens
and to the Set-Up menu.
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LUMINICE® REMINDER
The LuminIce® growth inhibitor recirculates the air in the
ice machine foodzone over a UV bulb. This process will
inhibit the growth of common micro-organisms on all
exposed foodzone surfaces.
The Bulb Minder is a feature that displays a reminder to
change its bulb every 12 months.
1. From the Set-Up menu, use the Down arrow to
highlight LuminIce Minder.
2. Press the Checkmark. On this screen, you can choose
to turn the reminder to AUTO or OFF by highlighting
your choice and pressing the Checkmark. Selecting
one will deselect the other.
3. When the check reflects your preference, use the
Down arrow to navigate to Exit and press the
Checkmark. The display will return to the Set-Up
menu.
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Part Number STH025 11/16
ICE BIN LEVEL SENSOR
Ice bin sensor is an optional accessory that allows the ice
level in the bin to be set to one of three different levels.
The bin level can be set seasonally to match usage, which
results in lower energy costs and fresher ice.
1. From the Set-Up menu, use the Down arrow to
highlight Ice Bin Sensor.
2. Press the Checkmark. On this screen, you can
choose to set the ice level to Low, Medium or
High by highlighting your choice and pressing the
Checkmark. Selecting one will deselect the other.
When the check reflects your preference, use the Down
arrow to navigate to Exit and press the Checkmark. The
display will return to the Set-Up menu.
USB SETUP
Refer to “Upgrading Firmware with a Flash Drive” and
“Exporting Data to a Flash Drive” for more information
on this setting. Flash drives must be correctly sized and
formatted - 2 gigabytes or smaller, Fat 32 file system, 512
allocation units - Refer to page 95 for full specification
and formatting details.
FACTORY DEFAULTS
The entire setup can be reset to factory defaults listed on
page 69.
1. From the Set-Up menu, use the Down arrow to
highlight Fact Default.
2. Press the Checkmark two times to reset the ice
machine. The display will return to the Set-Up menu.
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75
Energy Saver Menu
From the Main menu, use the Down arrow to navigate to
Energy Saver and press the Checkmark. Set up an energy
saving ice program, enable the Water Miser and view
usage statistics from this menu. Press the Left arrow to
return to previous screens.
Energy Saver
Ice Program
Water Miser
Statistics
Exit
Energy Saver Menu
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Part Number STH025 11/16
ICE PROGRAM
To save energy and water, the ice machine can be
programmed to only power up during time periods
that the ice will be used or when the bin level is being
depleted by heavy use.
1. In the Energy Saver menu, ensure that Ice Program is
highlighted.
2. Press the Checkmark. On this screen, you can choose
to turn on the time program (Time Prog) bin level
program (Bin Level) or ice usage program (Ice
Program) by highlighting your choice and pressing
the Checkmark. Selecting one will deselect the other.
If one of them is selected and you wish to turn both
off, highlight the choice and press Checkmark again.
3. If none of the programs are selected, highlighting
Settings and pressing the Checkmark will select the
times, bin level or pounds of ice per day. If one of the
programs is selected, highlight Settings and press
the Checkmark to choose the times or bin levels.
NOTE: For details on how to use the cursor for the
time program, refer to “Display Panel Navigation” in
this section.
4. Select Exit to return to previous screens and again to
the Energy Saver menu.
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WATER MISER
Water Miser is a feature that depending on water quality
can reduce water usage by eliminating flush cycles.
1. From the Energy Saver menu, use the Down arrow to
highlight Water Miser.
2. Press the Checkmark. On this screen, you can choose
to turn the Water Miser ON or OFF by highlighting
your choice and pressing the Checkmark. Selecting
one will deselect the other.
3. Use the Down arrow to navigate to Exit and press the
Checkmark to return to the Energy Saver menu.
STATISTICS
1. From the Energy Saver menu, use the Down arrow to
highlight Statistics.
2. Press the Checkmark. Choose to view ice usage, or
potable water and energy statistics by highlighting
your choice and pressing the Checkmark.
3. Press the Left arrow to return to previous screens
and to the Energy Saver menu.
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Part Number STH025 11/16
Service Menu
From the Main menu, use the Down arrow to navigate to
Service and press the Checkmark. This menu is intended
for the use of trained service personnel. Below is an
overview of the service menu. The following pages list the
navigation options available by drilling into the menus
with the Right arrow.
Service
Data History
00000000
00000000
00000000
00000000
00000000
00000000
Lifetime
Exit
RealTime Data
Time & Temp
Inputs
Outputs
Exit
Diagnostics
Control Board
Temp Sensors
Inputs
Exit
Man Harvest
Hrvst Started
Exit
Repl Cntl Bd
Manual Setup
USB Setup
Exit
USB Setup
USB Stick
Exit
Event Log
View ELog
Clear ELog
Exit
Exit
Part Number STH025 11/16
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80
Part Number STH025 11/16
Current Day
Current Day
Current Day
Current Day
Current Day
Current Day
Lifetime
Data
History
-1
-2
-3
-4
-5
Time &
Temp
Inputs
Outputs
Real Time
Data
Control
Board
Temp
Sensors
Input
Diagnostics
USB Stick
Manual
Setup
USB Setup
Harvest
Started
Download Frm
Download Cnf
Export ALL
Export Setup
USB Setup
Repl Cnt Bd
Manual
Harvest
Service
View E Log
Clear E Log
Event Log
DATA HISTORY
Press the Checkmark with Data History highlighted to
view a list of eight-digit dates (Current, Current + 1 ...
Current + 5), along with Lifetime (be sure to use the
Down arrow to reveal all the available information).
For each of the dates, use the Checkmark to view:
•
Minimum Freeze
•
Maximum Freeze
•
Minimum Harvest
•
Maximum Harvest
•
Maximum Temperature Delta T3 - T4
•
Delta
•
T3
•
T4
•
RunTime
•
Ice Production
•
Cycle Count
•
Potable Water
•
Clean Cycles
•
Exit
For Lifetime, use the Checkmark to view:
•
Install Date
•
Control Board Replacement Date
•
Control Board DOM (Date Of Manufacture)
•
RunTime
•
Cycle Count
•
Potable Water
•
Clean Cycles
•
Exit
Part Number STH025 11/16
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REAL TIME DATA
Press the Checkmark with Real Time Data highlighted
to get readings on Time & Temp, Inputs and Outputs (be
sure to use the Down arrow to reveal all the available
information).
Use the Checkmark to view:
Time and Temperature
•
Status Off/On - Displays stage of cycle
•
Time
•
T1 Thermistor Temperature
•
T2 Thermistor Temperature
•
T3 Thermistor Temperature
•
T4 Thermistor Temperature
•
T3 & T4 Delta Temperature
•
100 hz
•
120 hz
•
Exit
Inputs
•
Status Off/On - Displays stage of cycle
•
Curtain Switch 1
•
Curtain Switch 2
•
LPCO Switch
•
HPCO Switch
•
Bin Level - Low (Optional Bin Level Probe) Status
•
Bin Level - Medium (Optional Bin Level Probe) Status
•
Bin Level High (Optional Bin Level Probe) Status
•
Sensing Ice No/Yes
•
Water Level Low No/Yes
•
Water Level High No/Yes
•
Exit
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Part Number STH025 11/16
Outputs
•
Status Off/On - Displays stage of cycle
•
Water Pump Off/On
•
Hot Gas Valve 1 Off/On
•
Hot Gas Valve 2 Off/On
•
Air Pump Off/On
•
Water Valve Off/On
•
Dump Valve Off/On
•
Compressor Control Off/On
•
AuCS Relay Off/On
•
Ionic Cln Off/On
•
Exit
Part Number STH025 11/16
83
DIAGNOSTICS
Press the Checkmark with Diagnostics highlighted to
enter screens where you can run diagnostics on the
control board, sensors and switches.
Control Board
•
Self Check
•
Enable Relays
•
Exit
Temperature Sensors
•
T1 Thermistor Temperature
•
T2 Thermistor Temperature
•
T3 Thermistor Temperature
•
T4 Thermistor Temperature
•
Exit
Inputs
•
Curtain Switch 1 Closed/Open
•
Curtain Switch 2 Closed/Open
•
LPCO Switch Closed/Open
•
HPCO Switch Closed/Open
•
Bin Level - Low (Optional Bin Level Probe) Closed/
Open
•
Bin Level - Medium (Optional Bin Level Probe) Closed/
Open
•
Bin Level - High (Optional Bin Level Probe) Closed/
Open
•
Sensing Ice No/Yes
•
Water Level Low No/Yes
•
Water Level High No/Yes
•
Exit
84
Part Number STH025 11/16
MANUAL HARVEST
Press the Checkmark with Manual Harvest highlighted to
initiate a manual harvest.
•
Manual Harvest
•
Harvest Started
•
Exit
REPLACE CONTROL BOARD
Press the Checkmark with Replace Control Board
highlighted to program the replacement control board.
The data can copied from the defective control board
(refer to “Exporting Data to a Flash Drive” on page 99), or
entered manually through the Indigo interface.
•
•
•
Manual Setup
•
Board Install Date
•
Input Model Number
•
Input Serial Number
•
Condenser/condensing unit serial number
USB Setup
•
Insert Drive
•
Press Checkmark and wait for completion
Exit
USB SETUP
•
•
USB Stick
•
Download Firmware
Insert drive and wait for completion
•
Download Configuration
Insert drive and wait for completion
•
Export All
Insert drive and wait for completion
•
Export Setup
Insert drive and wait for completion
Exit
Part Number STH025 11/16
85
EVENT LOG MENU
From the Service menu, use the Down arrow to navigate
to Event Log and press the Checkmark.
Ensure View ELog is highlighted and press the Checkmark
to see the first event code, when it occurred and how
many times. Use the Down arrow to view information on
subsequent event codes. For more information on event
codes, see “Service Menu”. Use the Left arrow to return to
the Event Log menu.
To clear the event log: In the Event Log Menu, use the
Down arrow to highlight Clear ELog and press the
Checkmark. Press the Left arrow to return to previous
screens.
Event Log
View ELog
Clear ELog
Exit
Event Log Menu
86
Part Number STH025 11/16
EVENT LOG
Refer to the following table for Event Code descriptions.
Code
E01
E02
E03
E04
E05
E06
E07
E08
E09
E10
E11
E12
E13
E14
E15
E16
E17
E18
E19
E20
E21
E22
E23
E24
E25
E26
E27
E28
E29
E30
E31
E32
E33
E34
Description
Long Freeze Cycle
Long Harvest Cycle
Input Power Loss
High Condenser Temperature
High Pressure Control Opened
Spare
Starving TXV Single Evaporator or Low On Charge
TXV Fault Single or Dual Circuit Evaporators
Flooding Evaporator Fault Single Evaporator, Single
Circuit
Flooding Evaporator Fault Dual TXV, Dual Circuit
Refrigeration Fault
Curtain Switch Fault - E Board = Open more than
12 hours, G Board after Revision 4.017 = Open more
than 24 hours
Spare
Spare
Fan Cycle Control Fault - Lo Liquid Line Temperature
Remote Condensing Unit Fault (ICVD Only)
Spare
Spare
Ice Thickness Probe Fault
Water System Fault
T1 Temperature Sensor Issue
T2 Temperature Sensor Issue
T3 Temperature Sensor Issue
T4 Temperature Sensor Issue
Bin Level Probe Low Sensor Fault
Bin Level Probe Medium Sensor Fault
Bin Level Probe High Sensor Fault
AuCS
USB Communication Fault
USB Download Fault
Safe Mode
RS485 Communication Fault
KeyBoard Fault
Display Fault
Part Number STH025 11/16
87
88
Part Number STH025 11/16
Power Loss
Hi Cnd Temp or
Wtr Cnd Fault
HPC Fault
E03
E04
E05
Detail Event Log Service Definition
10 consecutive occurrences where the Difference of the Average evaporator inlet (T3) and outlet (T4)
is greater than 12°F in the last 1 minute of the freeze cycle (ELOG-E07)
Average compressor discharge line temperature last 6 seconds of Prechill +50°F (T1) compared to
average of first 6 minutes of freeze cycle (T2), is less than 1.05°F
Average compressor discharge line temperature last 6 seconds of Prechill +50°F (T1) compared to
average of first 6 minutes of freeze cycle (T2), is less than 1.05°F
Air/Water Only
TXV malfunction in dual circuit/
single evaps (TXV Fault)
Flooding evaporator for single
circuit single evaporator (flooding
evap)
Flooding evaporator for dual TXV
dual circuit / single evaporator
(Flooding Evap)
Starving TXV
TXV Fault
Flood Evap 1
Flood Evap 2
E08
E09
E10
Spare
Starving Evaporator for single
TXV or low on charge
G Board Rev 4.017 Event Log only no alert
10 consecutive occurrences where the Difference of the Av erage evaporator inlet (T3) and outlet (T4)
is greater than 12°F in the last 1 minute of the freeze cycle (ELOG-E07)
When power is interrupted to the ice machine the control board will log the event in the ELOG and
stamp the loss of power on power-up.
1). Liquid Line Temperature too High for Self-contained Air Cooled Ice machine = Air Cooled
Condenser Fault
2). Liquid Line Temperature too High for Self-contained Water Cooled ice machine = Water Cooled
Condenser Fault
The high pressure cutout switch (HPCO) opened 3 times in 4 hour period
High Pressure Cutout (HPC)
3 consecutive - 3.5 Minute Harvests logs SL#2 in memory, but runs until 500 long harvest cycles occur.
Power Supply (Event Log only No Alert)
Air Condenser High temp, or
water Condenser High
temperature
G Board Rev 4.017 - Alert only
after 10 consecutive trips
6 consecutive 60 Minute Freeze cycles = shut down and flash the SL#1 light on board
Definition
Long Harvest
Error Description
Long Freeze
E07
E06
Long Harvest
E02
E-Log Display Text
E01
Long Freeze
Event Log Detail
Part Number STH025 11/16
89
Curtain Switch open for more
than 24 hours (Curtain Fault)
Curtain Fault
E12
Rmt Cnd Fault
E16
Ice Probe (ITP)
Water System Fault
ITP Fault
WTR Fault
E20
Spare
Remote Condenser Fault
ICVD Condensing Unit only
Spare
Low amb control fault durring low
amb
E19
E18
E17
Low Liq Temp
Spare
E14
E15
Spare
E13
Air & Water-cooled Only
Refrigeration System (Refrig
Fault)
Refig Fault
Error Description
E11
E-Log Display Text
The monitored Frequencies is out of the appropriate range (Probe unplugged or proble m with
microphone). G Board Rev 4.017 - Event Log only no alert
Any of the following:
1) Sensing high water probe and not low water probe = Water fault.
2) The Evaporator outlet temperature is less than -10°F 6.5 to 7.5 Minutes into freeze.
3) The Low Water probe is satisfied at the end of harvest.
4) Low or High water probe satisfied at end of freeze cycle. G Board Rev 4.017 - Event Log only no alert
If the liquid line temperature drops below 40 F, or exceeds 140 F for more than 1 continuous minute
during the freeze cycle. G Board Rev 4.017 - Event Log only no alert
If the liquid line temperature drops below 60 F for any period exceeding continuous 1 minute during the
the freeze cycle. G Board Rev 4.017 - Event Log only no alert
The ice machine is set to ice making and remains in bin full condition for more than 24 hours.
The curtain switch is open or curtain is off. G Board Rev 4.017 = 24 hrs - E Board = 12 hrs
The compressor discharge temperature did not increase by at least 10 F, and the evaporator
temperature did not decreased by at least 10 F - Measured from Refrigeration Start up or Prechill
until 2 minutes into the Freeze cycle. G Board Rev 4.017 - Event Log only no alert
Detail Event Log Service Definition
Definition
90
Part Number STH025 11/16
When the AUCS clean option is selected from the menu, the control checks for the presence of the
AUCS board and if the AUCS is not connected it will signal an Ev ent “AUCS”. This will be cleared
as soon as the hardware is detected.
T3 Sensor
T4 Sensor
Bin Low Sens
Bin Med Sens
Bin Hi Sens
AUCS (Aucs not Present) (Event
Log only - No alarm)
USB Comm (Event Log only - No
Alarm)
USB download error (dlnd) Event
Log only - No alarm)
Safe Mode (Event Log only - No
alarm)
T3 Fault
T4 Fault
Bin Prb Fault
Bin Prb Fault
Bin Prb Fault
AUCS
USB COMM
USB DNLD
Safe Mode
E23
E24
E25
E26
E27
E28
E29
E30
E31
Safe mode allows the ice machine to operate for a period of time in the event of a WLP or ITP
sensor failure. The controller allows the machine to operate based on historical information
collected and model data information stored in the controllers memory.
USB Download error related to USB drive or a defective USB drive
USB Communication error, no USB drive in port or defective USB drive
Each thermistor reading is monitored continuously using six second average values. A
thermistor had a six second average value outside of the valid range for more than 10 continous
minutes
T2 Sensor
T2 Fault
Each thermistor reading is monitored continuously using six second average values. During Pre-chill
a thermistor had a six second average thermistor values fall outside of the valid temperature range.
T1 Sensor
T1 Fault
Detail Event Log Service Definition
Definition
E22
Error Description
E21
E-Log Display Text
USB FLASH DRIVE SPECIFICATIONS AND
FORMATTING
Updating firmware on Indigo™ model ice machines
requires a properly formatted 2 GB or smaller USB flash
drive. All USB flash drives must be formatted before use
to remove any software programs or files currently on the
flash drive.
USB Flash Drive Specifications:
• USB 2 Version
• 2 GB or less capacity
• Fat32 File System
• 512 MB File Allocation Unit
USB Flash Drive Formatting:
Procedure to format a USB flash drive varies with
operating system software.
Windows 7 or Windows Vista Computers:
1. Insert USB flash drive; your computer may indicate:
• “Found New Hardware” follow the prompts to
install the USB flash drive
• USB flash drive may auto play - Close auto play
window
2. Press Windows Key and E key simultaneously to
access windows explorer.
3. Right click on your USB Flash Drive.
4. Left click on “Format”.
5. Verify or select the settings below:
• USB flash drive capacity - 2 GB or less
• File System - Fat32
• Allocation Unit Size - Must be 512 MB
• Volume Label is Optional - Rename if desired
• Deselect “Perform A Quick Format” (no
checkmark)
6. Left click on “Start” - You will receive a warning “Formatting will remove all data” left click “OK”. A
“Format Complete” box will display when formatting
is finished. Close the pop up and windows explorer.
Part Number STH025 11/16
91
Windows XP Computers:
1. Insert USB flash drive; your computer may indicate:
• “Found New Hardware” follow the prompts to
install the USB flash drive
• USB flash drive may auto launch - Close auto
launch window.
2. To access Disk Management:
• Left click on the Windows Start Button
• Left click on “Run”
• Type compmgmt.msc and left click on “OK”
• Left click on “Disk Management”.
3. Verify USB flash drive capacity is 2 GB or less
4. Right click on the USB flash drive, then left click on
“Format” from the drop down list.
5. Verify or select the settings below:
• Volume Label is Optional - Rename if desired
• File System - Fat32
• Allocation Unit Size must be 512 MB
• Deselect “Perform A Quick Format” (no
checkmark)
6. Left click on “OK” you will receive a warning “Formatting will remove all data” left click on “OK”,
wait until formatting is complete and “status”
indicates “Healthy”, then close the disk management
window.
92
Part Number STH025 11/16
UPGRADING FIRMWARE WITH A FLASH DRIVE
Importan
The flash drive must be formatted before using, All
files and software on the flash drive are removed
during the formatting process. Refer to page 95 USB
Flash Drive Specifications and Formatting.
1. Drag and drop the files from website or email onto a
flash drive.
2. Ensure that the ice machine’s power is on.
3. Press the Menu button.
4. Press the Down arrow until Service is highlighted.
5. Press the Checkmark. The Service menu will be
displayed.
USB Setup
USB Stick
Download Frm
6. Press the Down arrow until USB Setup is highlighted.
7. Press the Checkmark. USB Stick will appear
highlighted.
8. Press the Checkmark again. A submenu with
Download Frm (Download Firmware) appears.
9. Ensure that Download Frm is highlighted and press
the Checkmark. A display of instructions will appear.
Part Number STH025 11/16
93
Bin Switches
Bin
Thermostat
USB
USB Connector
Display Light
Micro Light
Clean Light
Harvest Light
SL-1 Light
SL-2 Light
Thermistors
T1
T2
Dump Valve
T3
T4
Transformer
Left Bin Switch Light
Right Bin Switch Light
Display
Water Level Probe Light
Ice Thickness Probe Light
RS485
RT Harvest
Bin LED
LuminIce
Water
Level
Probe
Battery
LT Harvest
Fuse
Relay Lights
V
Pump
Water Pump
AuCS
Remote CVD
Compressor
Water
Ice
Thickness
Control Board
Dump
C
Probe
10. Follow
the on-screen
instructions:
LPC
Compressor
L1
L2
Not Used
HPC1
HPC flash drive into the USB
A. Insert Drive
CVD (Insert the
Contactor
port on the ice machine’s control board.)
Right Harvest Valve
HPC2
Water Inlet Valve
Left Harvest Valve
B.
Dump Valve Do not
Press Check (Press the Checkmark.)
remove flash drive, touch display buttons or
remove power while firmware is updating.
C.
The display will return to the home screen in
the off mode.
11. Reboot control board by removing power for 15
seconds and reapplying power.
12. Verify the new firmware version loaded by
navigating to Menu/Machine information/Main
Software Version and verify the firmware version
number.
94
Part Number STH025 11/16
EXPORTING DATA TO A FLASH DRIVE
Data can be copied from the control board memory
to a flash drive and used to transfer setup and/or cycle
data to a replacement control board or to transfer setup
information to multiple ice machines. Data may also be
requested by service department personnel for analysis
or as an aid to troubleshooting. The data files are small
and can be attached to an email.
Importan
The flash drive must be formatted before using,
Refer to page 95 USB Flash Drive Specifications and
Formatting. All files and data are deleted during the
formatting process.
1. Ensure that the ice machine’s power is on.
2. Press the Menu button.
3. Press the Down arrow until Service is highlighted.
4. Press the Checkmark. The Service menu will be
displayed.
USB Setup
USB Stick
Export All
5. Press the Down arrow until USB Setup is highlighted.
Part Number STH025 11/16
95
6. Press the Checkmark. USB Stick will appear
highlighted.Press the Checkmark again. A submenu
with Export ALL and Export Setup appears.
NOTE:
There are four files stored in ice machine memory:
•
Asset Data - ASDATAoo.CSV
•
Operating Data - OPDATAoo.CSV
•
Real Time Data - RTDATAoo.CSV
•
Ice Machine Settings - Settinoo.CSV
Select only “Ice Machine Settings” file when multiple
machines will be programmed with the same user
specified settings. Select “Export All” if you are installing a
replacement board.
7. Highlight Export ALL or Export Setup, depending
on your requirements, and press the Checkmark. A
display of instructions will appear.
8. Follow these on-screen instructions to:
A. Insert Drive (Insert the flash drive into the USB
port on the ice machine’s control board.)
B.
Press Check (Press the Checkmark.)
C.
Wait For Comp (Wait approximately 5 to 10
minutes for the download to complete.)
D. Depending on software version either Export
Complete, Success or the Home screen will
appear.
96
Part Number STH025 11/16
Operational Checks
GENERAL
Manitowoc ice machines are factory-operated and
adjusted before shipment. Normally, new installations do
not require any adjustment.
To ensure proper operation, always follow the
Operational Checks:
•
when starting the ice machine for the first time
•
after a prolonged out of service period
•
after cleaning and sanitizing
NOTE: Routine adjustments and maintenance procedures
are not covered by the warranty.
Importan
Refrigeration compressors must be operated for a
minimum break in period of 24 hours before full ice
production will be reached.
Part Number STH025 11/16
97
ICE THICKNESS CHECK
The ice thickness probe is factory-set to maintain the ice
bridge thickness at 1/8 in. (3 mm).
NOTE: Make sure the water curtain/splash shields are in
place when performing this check. It prevents water from
splashing out of the water trough. Remove the curtain to
make an adjustment, then replace immediately after the
adjustment is made.
1. Inspect the bridge connecting the cubes. It should
be about 1/8 in. (3 mm) thick.
2. If adjustment is necessary, turn the ice thickness
probe adjustment screw clockwise to increase
bridge thickness or counterclockwise to decrease
bridge thickness. Set a 9/32” gap between the ice
thickness probe and evaporator as a starting point.
Then adjust to achieve 1/8” ice thickness.
3. Make sure the ice thickness probe wire and the
bracket do not restrict movement of the probe.
98
Part Number STH025 11/16
1/8" (3 mm)
ICE BRIDGE THICKNESS
PLACE 9/32" (7MM) DRILL BIT
HERE TO SET INITIAL GAP
Ice Thickness Check
NOTE: Turning the adjustment 1/3 of a turn will change
the ice thickness about 1/16” (1.5 mm).
Part Number STH025 11/16
99
Control Board Timers
The control board has the following non-adjustable
timers:
•
The ice machine is locked into the freeze cycle for 6
minutes before a harvest cycle can be initiated. This
can be overridden by initiating a manual harvest.
Refer to “Manual Harvest” on “Manual Harvest” on
page 85
•
The maximum freeze time is 35 minutes at which
time the control board automatically initiates a
harvest sequence.
Firmware 5.009 or earlier - Maximum freeze time
is 60 minutes at which time the control board
automatically initiates a harvest sequence.
•
The maximum harvest time is 7 minutes, the control
board will preform a water thaw cycle and then
return the ice machine to the freeze cycle.
Firmware 5.009 or earlier - The maximum harvest
time is 3.5 minutes. The control board automatically
initiates a freeze sequence when this time is
exceeded.
•
The maximum water fill is 12 minutes.
100
Part Number STH025 11/16
Sequence of Operation
SELF CONTAINED AIR OR WATER COOLED
NOTE: The power button must be depressed and the
water curtain/ice dampers must be in place on the
evaporator before the ice machine will start.
Initial Start-Up or Start-Up After
Automatic Shut-Off
1. Water Purge
Before the compressor starts, the water pump and water
dump solenoid energize to purge the ice machine of
old water. This feature ensures that the ice making cycle
starts with fresh water.
2. Refrigeration System Equalization and Start-Up
The harvest valve(s) and air pump(s) energize to equalize
high and low side refrigeration pressure.
After 5 seconds the contactor energizes the compressor
and supplies power to the condenser fan motor. After 5
seconds the harvest valve(s) and air pump(s) de-energize.
NOTE: The fan motor is wired through a fan cycle
pressure control and will cycle on and off when the room
temperatures is below 70°F (21°C).
Part Number STH025 11/16
101
Freeze Sequence
3. Prechill
The compressor is on for 30 seconds (120 seconds initial
cycle) to lower the temperature of the evaporator(s)
before the water pump is energized. The water fill valve
will energize and remain on until water touches the low
and high, water level probes.
4. Freeze
Water Pump
The water pump(s) energizes and water flows over the
evaporator. The water pump is energized throughout the
freeze cycle.
Water Inlet Valve
The water inlet valve energized in prechill (30 seconds)
and can energize up to two times in the freeze cycle.
The control board will prevent the water fill valve from
energizing after two 6 minute water fill time limits.
After water contacts the low and high water probes the
water fill valve de-energizes. Ice builds on the evaporator
and the water level drops. When water loses contact with
the high water probe, the water fill valve energizes until
water contacts the high water probe again.
Ice Thickness Probe
The freeze cycle continues until the six minute freeze lock
expires and enough ice has formed to send a signal from
the ice thickness probe to the control board.
During the first 6 minutes of the freeze cycle the ice
thickness probe microphone samples ambient noise.
6 minutes into the freeze cycle 4 baseline readings are
recorded. Ice formation on the evaporator will change
the readings; when two of the four baseline readings are
exceeded a harvest cycle starts.
102
Part Number STH025 11/16
Harvest Sequence
5. Water Purge
The air pump(s) (when used) and the harvest valve(s)
open at the beginning of the water purge to divert hot
refrigerant gas into the evaporator.
The water pump(s) continues to run, and the water dump
valve energizes to purge the water in the water trough.
6. Harvest
The air pump (when used) remains energized and the
harvest valve(s) remains open. The refrigerant gas warms
the evaporator causing the cubes to slide, as a sheet, off
the evaporator and into the storage bin.
The sliding sheet of cubes opens the water curtain/ice
damper and bin switch.
The momentary opening and re-closing of the bin switch
terminates the harvest sequence and returns the ice
machine to the freeze sequence (Step 3 - 4.)
Part Number STH025 11/16
103
Automatic Shut-Off
7. Automatic Shut-Off
When the storage bin is full at the end of a harvest
sequence, the sheet of cubes fails to clear the water
curtain/ice damper and will hold it open. After the water
curtain/ice damper is held open for 30 seconds, the ice
machine shuts off. The ice machine remains off for 3
minutes before it can automatically restart.
The ice machine remains off until enough ice has been
removed from the storage bin to allow the ice to fall
clear of the water curtain or all of the ice dampers. As
the water curtain/ice dampers swing back to the closed
position, the bin switch re-closes and the ice machine
restarts (steps 1 - 2), provided the 3 minute delay period
is complete.
104
Part Number STH025 11/16
Part Number STH025 11/16
105
3.Prechill
Freeze Sequence
B.Compressor
Startup
1. Water Purge
2.Refrigeration
System Start-up
A.Pressure
Equalization
Start-Up
Ice Making
Sequence of
Operation
Off
Off
On
On
Off
Off
Off
Off
On
On
Off
Off
Off
May Cycle
On/Off
during
pre-chill
Off
On
Water
Dump
Valve
Off
Off
Off
Harvest
Air
Water Inlet
Valve(s) Pump(s)*
Valve
On
Water
Pump
On
On
Off
Off
On
On
Off
Off
May Cycle
On/Off
On
Off
Off
Contactor
Condenser
Compressor
Coil
Fan Motor
Self Contained Air & Water-Cooled Models
ENERGIZED PARTS CHART SELF CONTAINED MODELS
Initial Start-Up
is 120 Seconds
30 Seconds
thereafter
5 Seconds
5 Seconds
45 Seconds
Length of
Time
106
Part Number STH025 11/16
* NOT USED ON ALL MODELS
Off
Off
5. Water Purge
6.Harvest
7. Automatic ShutOff
On
On
Water
Pump
Harvest Sequence
4.Freeze
Ice Making
Sequence of
Operation
Off
On
On
Off
Off
On
On
Off
Off
Off
Off
Cycles Off
then On
two more
times
Harvest
Air
Water Inlet
Valve(s) Pump(s)*
Valve
Off
Off
On
Off
Water
Dump
Valve
Off
On
On
On
Off
On
On
On
Off
Until 3 Minute
Delay Expires
and Bin Switch
Re-closes
Bin Switch
Activation
Factory Set at
45 Seconds
May Cycle
On/Off
May Cycle
On/Off
Until Ice
Contact w/
Ice Thickness
Probe
Length of
Time
May Cycle
On/Off
Contactor
Condenser
Compressor
Coil
Fan Motor
Self Contained Air & Water-Cooled Models (Continued)
REMOTE CONDENSER
NOTE: The power button must be depressed and the
water curtain/ice dampers must be in place on the
evaporator before the ice machine will start.
Initial Start-Up or Start-Up After
Automatic Shut-Off
1. Water Purge
Before the compressor starts, the water pump and
water dump solenoid are energized for 45 seconds, to
completely purge the ice machine of old water. This
feature ensures that the ice making cycle starts with fresh
water.
2. Refrigeration System Equalization and Start-Up
The harvest valve, air pump(s) and harvest pressure
regulating (HPR) solenoid valves energize to equalize
high and low side refrigeration pressure.
After 5 seconds the liquid line solenoid valve energizes
and the contactor energizes the compressor and
condenser fan motor.
Part Number STH025 11/16
107
Freeze Sequence
3. Prechill
The compressor is on for 30 seconds (120 seconds initial
cycle) to lower the temperature of the evaporator(s)
before the water pump is energized. The water fill valve
will energize and remain on until water touches the low
and high water level probes.
4. Freeze
Water Pump
The water pump(s) energizes and water flows over the
evaporator. The water pump is energized throughout the
freeze cycle.
Water Inlet Valve
The water inlet valve energized in prechill and can
energize up to two times in the freeze cycle. The control
board will prevent the water fill valve from energizing
after two 6 minute water fill time limits.
After water contacts the low and high water probes the
water fill valve de-energizes. Ice builds on the evaporator
and the water level drops. When water loses contact with
the high water probe, the water fill valve energizes until
water contacts the high water probe again.
Ice Thickness Probe
The freeze cycle continues until the six minute freeze lock
expires and enough ice has formed to send a signal from
the ice thickness probe to the control board.
During the first 6 minutes of the freeze cycle the ice
thickness probe microphone samples ambient noise.
6 minutes into the freeze cycle 4 baseline readings are
recorded. Ice formation on the evaporator will change
the readings; when two of the four baseline readings are
exceeded a harvest cycle starts.
108
Part Number STH025 11/16
Harvest Sequence
5. Water Purge
The air pump (when used) the harvest valve(s) and
harvest pressure regulating valve (HPR) energize to divert
hot refrigerant gas to the evaporator.
The water pump continues to run, and the water dump
valve energizes to purge the water in the water trough.
6. Harvest
The harvest valve, air pump(s) and harvest pressure
regulating (HPR) solenoid valves remain energized and
the refrigerant gas warms the evaporator causing the
cubes to slide, as a sheet, off the evaporator and into the
storage bin. The sliding sheet of cubes opens the water
curtain/ice damper and bin switch. The momentary
opening and re-closing of the bin switch terminates the
harvest sequence and returns the ice machine to the
freeze sequence (Step 3 - 4.)
Part Number STH025 11/16
109
Automatic Shut-Off
7. Automatic Shut-Off
When the storage bin is full at the end of a harvest
sequence, the sheet of cubes fails to clear the water
curtain/ice damper and will hold it open. After the water
curtain/ice damper is held open for 30 seconds, the ice
machine shuts off. The ice machine remains off for 3
minutes before it can automatically restart.
The ice machine remains off until enough ice has been
removed from the storage bin to allow the ice to drop
clear of the water curtain/ice damper. As the water
curtain/ice damper closes the bin switch the ice machine
restarts (steps 1 - 2) provided the 3 minute delay period is
complete.
110
Part Number STH025 11/16
Part Number STH025 11/16
111
3.Prechill
Freeze Sequence
B.Compressor
Startup
1. Water Purge
2.Refrigeration
System Start-up
A.Equalization
Initial Start-Up
Ice Making
Sequence of
Operation
Off
Off
Off
On
Water
Pump
Off
On
On
Off
Off
On
On
Off
Off
Off
May Cycle
On/Off
during
pre-chill
Off
On
Off
Off
Off
On
On
Off
Off
On
On
Off
Off
On
On
Off
Off
Water
Contactor
Harvest
Air
Water Inlet
Condenser
Dump Coil Liquid Compressor
Valve(s) Pump(s)*
Valve
Fan Motor
Valve Line Solenoid
Remote Air-Cooled Condenser Models
Energized Parts Chart
ENERGIZED PARTS CHART REMOTE MODELS
Initial Start-Up
is 120 Seconds
30 Seconds
thereafter
5 Seconds
5 Seconds
45 Seconds
Length of
Time
112
Part Number STH025 11/16
* NOT USED ON ALL MODELS
Off
Off
5. Water Purge
6.Harvest
7.Automatic
Shut-Off
On
On
Water
Pump
Harvest Sequence
4.Freeze
Ice Making
Sequence of
Operation
Off
On
On
Off
On
On
Off
Off
Off
Off
Off
On
Off
On
On
Off
On
On
Off
On
On
Until 3 Minute
Delay Expires
and Bin Switch
Re-closes
Bin Switch
Activation
Factory Set at
45 Seconds
Water
Contactor
Harvest
Air
Water Inlet
Condenser Length of
Dump Coil Liquid Compressor
Valve(s) Pump(s)*
Valve
Fan Motor
Time
Valve Line Solenoid
Until Ice
Cycles Off
Contact w/
then On
Off
On
On
On/
Off
Off
Ice Thickness
two more
Probe
times
Remote Air-Cooled Condenser Models
Energized Parts Chart (Continued)
Troubleshooting
Safety Limits
In addition to standard safety controls, the control board
has built in safety limit controls which protect the ice
machine from major component failures.
Safety limits are stored and indicated by the control
board. The number of cycles required to stop the ice
machine varies for each safety limit.
•
Safety Limit 1 - If the freeze time reaches 35 minutes,
the control board automatically initiates a harvest
cycle. If 6 consecutive 35-minute freeze cycles occur,
the ice machine stops
Firmware 5.009 or earlier - If the freeze time reaches
60 minutes, the control board automatically initiates
a harvest cycle. If 6 consecutive 60 minute freeze
cycles occur, the ice machine stops
•
Safety Limit 2 - If the harvest time reaches 7 minutes,
the control board will start a water thaw cycle and
automatically return the ice machine to the freeze
cycle. After 3 consecutive long harvest cycles the ice
machine stops.
Firmware 5.009 or earlier - If the harvest time reaches
3.5 minutes the control board will automatically start
a freeze cycle. If 500 consecutive 3.5 minutes harvest
cycles occur, the ice machine stops.
Part Number STH025 11/16
113
SAFE OPERATION MODE
Allows the ice machine to operate up to 72 hours if the
ice thickness probe (E19 fault) and/or water level probe
sensors fail (E20 fault).
•
When the control board starts the safe mode an alert
is flashed on the LCD display to notify the end-user
they have a production problem.
•
The control board automatically initiates
and monitors the safe mode. The control will
automatically exit the safe mode if a normal signal is
received from the input.
•
After 72 hours the control board will enter a standby
mode and turn off
The control board needs a five cycle history to operate
safe mode. If five cycles have never been successfully
completed the ice machine will shut-off.
WATER ASSIST HARVEST
FIRMWARE VERSION 5.010 AND HIGHER
When the damper/curtain does not open within 3.5
minutes in the harvest cycle the following occurs:
•
3.5 minutes - The water inlet valve energizes until
water touches the high water level probe.
•
4 minutes - The water pump energizes.
•
6.5 to 7 minutes - The water dump valve energizes.
114
Part Number STH025 11/16
WATER THAW CYCLE
FIRMWARE VERSION 5.010 AND HIGHER
When the damper/curtain does not open during the
7 minute harvest cycle the following water thaw cycle
occurs:
•
7 minutes - The compressor, harvest solenoid valve
and dump valve de-energize.
The water pump remains energized and the water
inlet valve energizes until water touches the high
water level probe.
•
Water is circulated, dumped and refilled to the high
water level probe 18 times (approximately 1 hour).
Model 1200 or smaller:
Circulate 165 seconds, dump 45 seconds
Model 1400 and larger
Circulate 240 seconds, dump 120 seconds
•
At the end of the thaw cycle the ice machine will start
another freeze cycle (approximately 1 - 1.75 hour).
Curtain Operation In Water Assist Harvest
• Open & close damper = Continue Thaw Cycle
•
Open damper 30 seconds = Full Bin Shutoff
NOTE: Use the keypad and turn the ice machine off
and then on to terminate the cycle. Disconnecting and
reconnecting power to end the cycle will result in the ice
machine restarting in a harvest cycle.
Part Number STH025 11/16
115
ANALYZING WHY A SAFETY LIMIT STOPPED THE ICE
MACHINE
Safety limits are designed to stop the ice machine prior to
major component failures, most often a minor problem
or something external to the ice machine. This may be
difficult to diagnose, as many external problems occur
intermittently.
Example: An ice machine stops intermittently on safety
limit #1 (long freeze times). The problem could be a low
ambient temperature at night, a water pressure drop, the
water is turned off one night a week, etc.
Refrigeration and electrical component failures will cause
a safety limit trip. Eliminate all electrical components and
external causes first. If it appears that the refrigeration
system is causing the problem, use Manitowoc’s
Freeze Cycle Refrigeration System Operational Analysis
Table, along with detailed charts, checklists, and other
references to determine the cause.
The following checklists are designed to assist the service
technician in analysis. However, because there are many
possible external problems, do not limit your diagnosis to
only the items listed.
SAFETY LIMIT #1
Firmware version 5.010 and higher
Freeze time exceeds 35 minutes for 6 consecutive freeze
cycles.
Firmware version 5.09 and lower
Freeze time exceeds 60 minutes for 6 consecutive freeze
cycles.
Possible cause checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist” on
page 136
116
Part Number STH025 11/16
Water System
• Dirty/defective water level probe
• Low water pressure (20 psig min.)
• High water pressure (80 psig max.)
• High water temperature (90°F/32.2°C max.)
• Clogged water distribution tube
• Dirty/defective water fill valve
• Dirty/defective water dump valve
• Defective water pump
• Loss of water from sump area
Electrical System
• Low incoming voltage
• Ice thickness probe out of adjustment
• Harvest cycle not initiated electrically
• Contactor not energizing
• Compressor electrically non-operational
• Defective fan cycling control
• Defective fan motor
Miscellaneous
• Non-Manitowoc components
• Improper refrigerant charge
• Defective head pressure control
• Defective harvest valve
• Defective compressor
• TXV starving or flooding (check bulb mounting)
• Non-condensible in refrigeration system
• Plugged or restricted high side refrigerant lines or
component
• Restricted air flow/dirty condenser fins
• High inlet air temperature
• Condenser discharge air recirculation
Part Number STH025 11/16
117
SAFETY LIMIT #2
Firmware version 5.010 and higher
Harvest time exceeds7 minutes for 3 consecutive harvest
cycles.
Firmware version 5.09 and lower
Harvest time exceeds 3.5 minutes for 500 consecutive
harvest cycles
Possible Cause Checklist
Improper Installation
• Refer to ”Installation/Visual Inspection Checklist” on
page 136
Water System
• Water area (evaporator) dirty
• Dirty/defective water dump valve
• Vent tube not installed on water outlet drain
• Water freezing behind evaporator
• Plastic extrusions and gaskets not securely mounted
to the evaporator
• Clogged water distribution tube
Electrical System
• Ice thickness probe out of adjustment
• Bin switch closed/defective
• Premature harvest - The control board initiates a
harvest cycle when the high water level probe circuit
is complete and the low water level probe is open.
Refrigeration System
• Non-Manitowoc components
• Improper refrigerant charge
• Defective head pressure control valve
• Defective harvest valve
• TXV flooding (check bulb mounting)
• Defective fan cycling control
• Water cooled only - Water regulating valve is
incorrectly adjusted or will not close during harvest
cycle.
118
Part Number STH025 11/16
Troubleshooting By Symptom
The troubleshooting procedures follow flow charts.
There are four symptoms, the symptom that you are
experiencing will determine which flow chart to use. The
flow chart asks yes and no questions to determine the
problem. The flow chart will direct you to a procedure
to correct the problem. Remote condenser, and self
contained models use separate charts.
SYMPTOM #1
Ice Machine Stops Running
Ice machine is in Ice Making cycle
or
Has a History of Shutting Down
•
Refer to Ice Machine Stops Running Flow Chart
SYMPTOM #2
Ice Machine has a Long Freeze Cycle.
Ice Formation is Thick
or
Thin Ice Fill on Inlet or Outlet of Evaporator
or
Low Production
Safety Limit #1 (possible)
•
Refer to Freeze Cycle Refrigeration System
Operational Analysis Table
SYMPTOM #3
Ice Machine Will Not Harvest - Freeze Cycle is Normal
and Ice Cubes are Not Melted After Harvest
Safety Limit #2 (possible)
•
Refer to Refrigeration Harvest Flow Chart
SYMPTOM #4
Ice Machine Will Not Harvest - Freeze Cycle is Normal
and Ice Cubes are Melted After Harvest
•
Refer to Ice Meltout Flow Chart
Part Number STH025 11/16
119
RESET TO FACTORY DEFAULTS
Before starting troubleshooting procedures, reset the
control board to factory defaults to prevent
mis-diagnosis. Before resetting to factory defaults do one
of the following:
A. Copy settings to a usb device and flash settings
into the control board when diagnostics are
complete.
B.
Write down any customer settings so they can
be re-entered when diagnostics are complete.
This procedure also resets the password to the factory
default. The default factory password is 1234. To reset the
ice machine to factory defaults refer to “Password Entry”
on page 63.
120
Part Number STH025 11/16
Part Number STH025 11/16
121
No
Are there any lights
on or flashing on the
control board?
No
START
Is the display interface
energized and functioning?
No
No
Display light
Flashing?
Yes
No
Is there an Alert or
Error Logged?
Yes
Yes
Cycle Power to Board,
are lights flashing?
No
Yes
Micro light flashing?
Does the ice machine start
when the Power button is pushed?
Refer to display & control
board diagnostics
Yes
Yes
SYMPTOM #1 ICE MACHINE WILL NOT RUN
No
Yes
Refer to display & control
board diagnostics
Yes
Unit has
adequate ground?
No
Install Ground
Refer to Alert/Error
Log
122
Part Number STH025 11/16
Yes
Refer to display & control
board diagnostics
Control board fuse
is good ?
Yes
Replace fuse & determine which
component caused fuse to blow
No
Supply power to the
ice machine
No
Line voltage at wires
55 & 56 on 9 pin control
board connector ?
No
Yes
Bin switch light on ?
(Multi evap all lights on ? )
Yes
No
Yes
All water curtains or
dampers in place ?
No
Install the water curtain /damper .
Part Number STH025 11/16
123
Refer to display & control
board diagnostics
No
Which light flashes?
Yes
Test run ice machine
Yes
Press power button to
start ice making, does safety
limit light flash?
Ice machine starts?
No
Yes
SL2
SL1
No
Refer to bin
switch diagnostics.
Replace the water
curtain/damper.
Refer to Safety Limit #2 long harvest
cycle
Refer to Safety Limit #1 long freeze cycle
Yes
Is magnet on the
water curtain/damper
Yes
SYMPTOM #2 - LOW PRODUCTION, LONG FREEZE
CYCLE
Ice Machine has a Long Freeze Cycle.
Ice Formation is Thick
or
Thin on Inlet or Outlet of Evaporator
or
Low Production
How to Use the Freeze Cycle Refrigeration System
Operational Analysis Table
GENERAL
These tables must be used with charts, checklists and
other references to eliminate refrigeration components
not listed on the tables and external items and problems
which can cause good refrigeration components to
appear defective.
The tables list five different defects that may affect the ice
machine’s operation.
NOTE: A low-on-charge ice machine and a starving
expansion valve have very similar characteristics and are
listed under the same column.
NOTE: Before starting, see “Before Beginning Service” for
a few questions to ask when talking to the ice machine
owner.
PROCEDURE
Step 1 Complete the “Operation Analysis” column.
Read down the left “Operational Analysis” column.
Perform all procedures and check all information listed.
Each item in this column has supporting reference
material to help analyze each step.
While analyzing each item separately, you may find an
“external problem” causing a good refrigerant component
to appear bad. Correct problems as they are found. If
the operational problem is found, it is not necessary to
complete the remaining procedures.
124
Part Number STH025 11/16
Step 2 Enter Checkmarks (√).
Each time the actual findings of an item in the
“Operational Analysis” column matches the published
findings on the table, enter a Checkmark.
Example: Freeze cycle suction pressure is determined to
be low. Enter a Checkmark in the “low” column.
Step 3 Add the Checkmarks listed under each of
the four columns. Note the column number with the
highest total and proceed to “Final Analysis.”
NOTE: If two columns have matching high numbers,
a procedure was not performed properly, supporting
material was not analyzed correctly or the problem
component is not covered by the analysis table.
Before Beginning Service
Ice machines may experience operational problems
only during certain times of the day or night. A machine
may function properly while it is being serviced, but
malfunctions later. Information provided by the user can
help the technician start in the right direction, and may
be a determining factor in the final diagnosis.
Ask these questions before beginning service:
•
When does the ice machine malfunction? (night, day,
all the time, only during the Freeze cycle, etc.)
•
When do you notice low ice production? (one day a
week, every day, on weekends, etc.)
•
Can you describe exactly what the ice machine seems
to be doing?
•
Has anyone been working on the ice machine?
•
During “store shutdown,” is the circuit breaker, water
supply or air temperature altered?
•
Is there any reason why incoming water pressure
might rise or drop substantially?
Part Number STH025 11/16
125
126
Part Number STH025 11/16
1
2
3
4
Air-Temperature Entering Condenser_______________
Water Temperature Entering Ice Machine____________
Published 24 hour ice production__________________
Calculated (actual) ice production__________________
NOTE: The ice machine is operating properly if the ice fill patterns is normal and ice production is within 10%
of charted capacity.
Installation and
Water System
Reference “Water
All installation and water related problems must be corrected before proceeding with chart.
System Checklist” on
page 136
Ice Formation Pattern
Ice formation normal
Ice formation is extremely Ice formation is extremely
-orReference “Ice
thin on outlet of
thin on outlet of
Ice formation normal
Ice formation is extremely
Formation Pattern” on
evaporator
evaporator
-orthin on inlet of evaporator
page 137
-or-orNo ice formation on entire
-orNo ice formation on the No ice formation on entire
evaporator
No ice formation on entire
entire evaporator
evaporator
evaporator
Operational Analysis
Ice Production
Reference “Ice
Production Check” on
page 133
SINGLE EVAPORATOR, SINGLE EXPANSION VALVE
SELF CONTAINED AIR, WATER & REMOTE CONDENSER
SYMPTOM #2 - FREEZE CYCLE REFRIGERATION SYSTEM OPERATIONAL ANALYSIS TABLES
Part Number STH025 11/16
127
Operational Analysis
1
2
3
4
Freeze Cycle
If discharge pressure is High or Low refer to freeze cycle high or low discharge pressure problem
Discharge Pressure
checklist page 140 to eliminate problems and/or components not listed on this table before
________ _____________
proceeding.
1 minute Middle
End
into cycle
Freeze Cycle
If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem
Suction Pressure
checklist page 144 to eliminate problems and/or components not listed on this table before
________ _____________ proceeding.
1 minute Middle
End
Suction pressure is
Suction pressure is
Suction pressure is
Suction pressure is
High
Low or Normal
High
High
SINGLE EVAPORATOR, SINGLE EXPANSION VALVE
SELF CONTAINED AIR, WATER & REMOTE CONDENSER
128
Part Number STH025 11/16
Reference “Comparing Evaporator
Inlet and Outlet Temperatures Self-contained & Remote Condenser
Single Expansion Valve Machines” on
page 147
T3 & T4____________ ° F (°C)
Difference
Outlet T4__________ ° F (°C)
Inlet T3____________° F (°C)
Compare temperatures of
evaporator inlet and evaporator
outlet.
Operational Analysis
Wait 5 minutes into the freeze cycle.
Inlet and outlet
within 7° F (4°C)
of each other
1
Inlet and outlet
not within 7° F (4°C)
of each other
-andInlet is colder than
outlet
2
Inlet and outlet
within 7°F (4°C)
of each other
-orInlet and outlet
not within 7°F (4°C)
of each other
-andInlet is warmer than
outlet
3
SINGLE EVAPORATOR, SINGLE EXPANSION VALVE
SELF CONTAINED AIR, WATER & REMOTE CONDENSER
Inlet and outlet
within 7°F (4°C)
of each other
4
Part Number STH025 11/16
129
T2 _________°F (°C)
Reference “Discharge Line
Temperature Analysis” on page
150
Discharge Line Temperature
Record freeze cycle discharge
line temperature at the end of
the freeze cycle
Operational Analysis
Wait 5 minutes into the freeze
cycle.
Compare temperatures of
compressor discharge line and
harvest valve inlet.
Reference “Harvest Valve
Analysis” on page 148
3
4
The harvest valve inlet
The harvest valve inlet
The harvest valve inlet is Cool enough to hold
is Cool enough to hold
is Cool enough to hold
hand on
hand on
hand on
-and-and-andthe compressor
the compressor
the compressor
discharge line is Cool
discharge line is Hot.
discharge line is Hot.
enough to hold hand
on.
2
Discharge line temp.
Discharge line temp.
Discharge line temp.
Discharge line temp.
150°F (65°C)
150°F (65°C)
less than
150°F (65°C) or higher
or higher at the end of or higher at the end of 150°F (65°C) at the end at the end of the freeze
the freeze cycle
the freeze cycle
of the freeze cycle
cycle
The harvest valve inlet
is Hot
-andapproaches the
temperature of a Hot
compressor discharge
line.
1
SINGLE EVAPORATOR, SINGLE EXPANSION VALVE
SELF CONTAINED AIR, WATER & REMOTE CONDENSER
130
Part Number STH025 11/16
3
TXV Flooding
2
Low On Charge
-OrTXV Starving
1
Harvest Valve
Leaking
Compressor
4
The following are the procedures for completing each step of the Freeze Cycle Refrigeration System Operational Analysis
Tables. Each procedure must be performed exactly for the table to work correctly.
Operational Analysis
Final Analysis
Enter total number of boxes
checked in each column.
Reference “Final Analysis - Selfcontained Air, Water & Remote
Condenser Models” on page 152
SINGLE EVAPORATOR, SINGLE EXPANSION VALVE
SELF CONTAINED AIR, WATER & REMOTE CONDENSER
Part Number STH025 11/16
131
Operational Analysis
1
2
3
4
Ice Production
Air-Temperature Entering Condenser___________________
Water Temperature Entering Ice Machine________________
Published 24 hour ice production______________________
Calculated (actual) ice production______________________
NOTE:The ice machine is operating properly if the ice fill patterns is normal and ice production is within 10%
of charted capacity.
Installation and
All installation and water related problems must be corrected before proceeding with table.
Water System
Ice Formation Pattern
Ice formation normal
Top or 1
Ice formation is extremely Ice formation is extremely
-orSide_________
thin on outlet of
thin on outlet of one
Ice formation is extremely
Ice formation normal
evaporator
side or Top or Bottom of
thin at inlet of one side
-orBottom or 1
-orevaporator
or Top or Bottom of
No ice formation on entire
Side_________
No ice formation on one
-orevaporatorr
evaporator
side or Top or Bottom of No ice formation on entire
-orevaporator
evaporator
No ice formation on entire
evaporator
SINGLE EVAPORATOR, DUAL EXPANSION VALVE
SELF CONTAINED AIR, WATER & REMOTE CONDENSER
132
Part Number STH025 11/16
Operational Analysis
1
2
3
4
Freeze Cycle
If discharge pressure is High or Low refer to freeze cycle high or low discharge pressure problem
Discharge Pressure
checklist page 140 to eliminate problems and/or components not listed on this table before
________ _____________
proceeding.
1 minute Middle
End
into cycle
Freeze Cycle
If suction pressure is High or Low refer to freeze cycle high or low suction pressure problem
Suction Pressure
checklist page 144 to eliminate problems and/or components not listed on this table before
________ _____________ proceeding.
1 minute Middle
End
Suction pressure is
Suction pressure is
Suction pressure is
Suction pressure is
High
Low or Normal
High
High
Wait 5 minutes into the freeze
The harvest valve inlet
The harvest valve inlet
cycle.
The harvest valve inlet is Cool enough to hold The harvest valve inlet
is Hot
Compare temperatures of
is Cool enough to hold
hand on
is Cool enough to hold
-andcompressor discharge line and
hand on
-andhand on
approaches the
both harvest valve inlets.
-andthe compressor
-andtemperature of a Hot
the compressor
discharge line is Cool
the compressor
compressor discharge
discharge line is Hot.
enough to hold hand
discharge line is Hot.
line.
on.
SINGLE EVAPORATOR, DUAL EXPANSION VALVE
SELF CONTAINED AIR, WATER & REMOTE CONDENSER
Part Number STH025 11/16
133
Final Analysis
Enter total number of boxes
checked in each column.
_________°F (°C)
Operational Analysis
Discharge Line Temperature
Record freeze cycle discharge
line temperature at the end of
the freeze cycle
2
3
4
Harvest Valve
Leaking
Low On Charge
-OrTXV Starving
TXV Flooding
Compressor
Discharge line temp.
Discharge line temp.
Discharge line temp.
Discharge line temp.
150°F (65°C)
150°F (65°C)
less than
150°F (65°C) or higher
or higher at the end of or higher at the end of 150°F (65°C) at the end at the end of the freeze
the freeze cycle
the freeze cycle
of the freeze cycle
cycle
1
SINGLE EVAPORATOR, DUAL EXPANSION VALVE
SELF CONTAINED AIR, WATER & REMOTE CONDENSER
Ice Production Check
The amount of ice a machine produces directly relates
to the operating water and air temperatures. This means
a condensing unit with a 70°F (21°C) outdoor ambient
temperature and 50°F (10°C) water produces more ice
than the same model condensing unit with a 90°F (32°C)
outdoor ambient temperature and 70°F (21°C) water.
1. Determine the ice machine operating conditions:
Air temp entering condenser:____°
Air temp around ice machine:____°
Water temp entering sump trough:____°
2. Refer to the appropriate 24-Hour Ice Production
Chart (starting on page 223). Use the operating
conditions determined in step 1 to find published
24-Hour Ice Production:_____
• Times are in minutes.
Example: 1 min. 15 sec. converts to 1.25 min.
(15 seconds ÷ 60 seconds = .25 minutes)
• Weights are in pounds.
Example: 2 lb. 6 oz. converts to 2.375 lb.
(6 oz. ÷ 16 oz. = .375 lb.)
3. Perform an ice production check using the formula
below.
1.
2.
Freeze
Time
1440
Minutes
in 24 Hrs.
3.
=
Harvest
Time
÷
Total Cycle
Time
=
Total Cycle
Time
x
Weight
of One
Harvest
134
+
Cycles per
Day
=
Cycles per
Day
Actual
24-Hour
Production
Part Number STH025 11/16
Weighing the ice is the only 100% accurate check.
However, if the ice pattern is normal and the 1/8 in.
thickness is maintained, the ice slab weights listed with
the 24-Hour Ice Production Charts may be used.
4. Compare the results of step 3 with step 2. Ice
production checks that are within 10% of the
chart are considered normal. If they match closely,
determine if:
• Another ice machine is required.
• More storage capacity is required.
• Relocating the existing equipment to lower the
load conditions is required.
Contact the local Manitowoc Distributor for information
on available options and accessories.
Part Number STH025 11/16
135
Installation/Visual Inspection Checklist
Inadequate Clearances
• Check all clearances on sides, back and top. Reference
”Clearance Requirements” on page 23
Ice machine is not level
• Level the ice machine
Condenser is dirty
• Clean the condenser
Water filtration is plugged (if used)
• Install a new water filter
Water drains are not run separately and/or are not
vented
• Run and vent drains according to the Installation
Manual
Line set is improperly installed
• Reinstall according to the Installation Manual
Reference “Lineset Applications” on page 34
136
Part Number STH025 11/16
Water System Checklist
A water-related problem often causes the same
symptoms as a refrigeration system component
malfunction.
Water system problems must be identified and
eliminated prior to replacing refrigeration components.
Water area (evaporator) is dirty
• Clean as needed
Water inlet pressure not between 20 and 80 psig
(1-5 Bar, 138-552 kPa).
• Install water regulator or increase water pressure
Incoming water temperature is not between 35°F (2°C)
and 90°F (32°C)
• If too hot, check the hot water line check valves in
other store equipment
Water filtration is plugged (if used)
• Install a new water filter
Water dump valve leaking during the Freeze cycle
• Clean/replace dump valve as needed
Vent tube is not installed on water outlet drain
• See Installation Instructions
Hoses, fittings, etc., are leaking water
• Repair/replace as needed
Water fill valve is stuck open or closed
• Clean/replace as needed
Water is leaking out of the sump trough area
• Stop the water loss
Uneven water flow across the evaporator
• Clean the ice machine
Plastic extrusions and gaskets are not secured to the
evaporator
• Remount/replace as needed
Part Number STH025 11/16
137
Ice Formation Pattern
Evaporator ice formation pattern analysis is helpful in ice
machine diagnostics.
Analyzing the ice formation pattern alone cannot
diagnose an ice machine malfunction. However, when
this analysis is used along with Manitowoc’s Freeze Cycle
Refrigeration System Operational Analysis Tables, it can
help diagnose an ice machine malfunction.
Any number of problems can cause improper ice
formation.
Keep the water curtain/ice dampers in place while
checking the ice formation pattern to ensure no
water is lost.
1. Normal Ice Formation
Ice forms across the entire evaporator surface.
At the beginning of the Freeze cycle, it may appear that
more ice is forming on the inlet of the evaporator than on
the outlet. At the end of the Freeze cycle, ice formation
at the outlet will be close to, or just a bit thinner than, ice
formation at the inlet. The dimples in the cubes at the
outlet of the evaporator may be more pronounced than
those on the inlet. This is normal.
It is normal for ice thickness to vary up to 1/16” across the
surface of the evaporator. The ice bridge thickness at the
ice thickness control probe should be at least 1/8”.
The ice thickness probe must be set to maintain the ice
bridge thickness at approximately 1/8 in. If ice forms
uniformly across the evaporator surface, but does not
reach 1/8 in. in the proper amount of time, this is still
considered a normal ice fill pattern.
138
Part Number STH025 11/16
2. Extremely Thin at Evaporator Outlet
There is no ice, or a considerable lack of ice formation, at
the outlet of the evaporator.
Examples: No ice at all on the outlet half of the
evaporator, but ice forms on the inlet half of the
evaporator. Or, the ice at the outlet of the evaporator
reaches 1/8 in. to initiate a harvest, but the inlet of the
evaporator already has 1/2 in. to 1 in. of ice formation.
3. Extremely Thin at Evaporator Inlet
There is no ice, or a considerable lack of ice formation at
the inlet of the evaporator. Examples: The ice at the outlet
of the evaporator reaches 1/8 in. to initiate a harvest,
but there is no ice formation at all on the inlet of the
evaporator.
4. No Ice Formation
The ice machine operates for an extended period, but
there is no ice formation at all on the evaporator.
Evaporator Tubing Routing
Routing of the tubing on the back of the evaporator
determines the ice fill pattern failure mode.
One Evaporator, One TXV models
The evaporator outlet tubing does not exit directly at the
top of the evaporator, but exits several inches below the
top of the evaporator. Extremely Thin at the Evaporator
Outlet will first be visible several inches below the top
of the evaporator. Extremely Thin at Evaporator Inlet will
first be visible at the bottom of the evaporator.
Outlet
ICE
ICE
Inlet
Thin at Inlet
Part Number STH025 11/16
Thin at Outlet
139
One Evaporator, Two TXV 30” Models
Tubing routing for one evaporator with two TXV’s is
different. The evaporator has two inlets and outlets. Fill
pattern varies depending on which circuit is affected,
Extremely Thin at the Evaporator Outlet will first be
visible either 1/4 or 3/4 of the way down the evaporator.
Extremely Thin at the Evaporator Inlet will show at
the bottom of the evaporator or 1/2 of the way down
depending on the circuit affected.
ICE
Outlet
Inlet
ICE
ICE
Outlet
Inlet
ICE
ICE
Thin at Outlet
140
Part Number STH025 11/16
One Evaporator, Two TXV 48” Models
Tubing routing for one evaporator with two TXV’s is
different. The evaporator has two inlets and outlets. Fill
pattern varies depending on which circuit is affected,
Extremely Thin at the Evaporator Outlet will first be
visible 1/3 of the way down the evaporator. Only one side
of the evaporator may be affected depending on failure.
A TXV failure will usually show on only one side, while low
on refrigerant can affect one or both sides depending on
the amount of refrigerant loss and ambient temperature.
Extremely Thin at the Evaporator Inlet will show at
the bottom of the evaporator. Depending on the failure
either the entire bottom of the evaporator or one side of
the bottom of the evaporator may be affected.
ICE
Outlet
Outlet
Thin at Inlet
ICE
Inlet
Inlet
ICE
Thin at Outlet
Part Number STH025 11/16
141
Analyzing Discharge Pressure in the Freeze Cycle
1. Determine the ice machine operating conditions:
Air temp. entering condenser
______
Air temp. around ice machine
______
Water temp. entering sump trough
______
2. Refer to Operating Pressure table (starting on page
223) for ice machine being checked.
Use the operating conditions determined in step 1 to
find the published normal discharge pressures.
Freeze Cycle ______
Harvest Cycle ______
3. Perform an actual discharge pressure check.
Freeze Cycle
psig (kPa)
1 Minute into the
Freeze Cycle
__________
Middle of Freeze Cycle
__________
End of Freeze Cycle
__________
4. Compare the actual discharge pressure (step 3) with
the published discharge pressure (step 2).
The discharge pressure is normal when the actual
pressure falls within the published pressure range
for the ice machine’s operating conditions. It is
normal for the discharge pressure to be higher at
the beginning of the Freeze cycle (when load is
greatest), then drop throughout the Freeze cycle.
142
Part Number STH025 11/16
Freeze Cycle Discharge Pressure High Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
on page 136
Air Condenser
• Dirty condenser filter
•
Dirty condenser fins
•
High inlet air temperature
•
Condenser discharge air recirculation
•
Defective fan cycling control
•
Defective fan motor
•
Defective head pressure control valve {Remote}
Water Condenser
• Low water pressure [20 psig (138 kPa) min.]
•
High inlet water temperature (90°F/32°C max.)
•
Dirty condenser
•
Dirty/Defective water regulating valve
•
Water regulating valve out of adjustment
Other
• Overcharged
•
Non-condensable (air) in system
•
Wrong type of refrigerant
•
Non-Manitowoc components in system
•
High side refrigerant lines/component restricted
Part Number STH025 11/16
143
Freeze Cycle Discharge Pressure Low Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist” on
page 136
Air Cooled Condensers
• Defective head pressure control valve, won’t bypass
“Head Pressure Control Valve” on page 197
•
Defective fan cycle control, stuck closed
“Fan Cycle Control” on page 187
Water Cooled Condensers
• Water Regulating Valve out of adjustment
•
Water Regulating Valve Defective
Other
• Undercharged
•
Wrong type of refrigerant
•
Non-Manitowoc components in system
•
Liquid line/component restricted
144
Part Number STH025 11/16
Analyzing Suction Pressure
The suction pressure gradually drops throughout the
freeze cycle. The actual suction pressure (and drop rate)
changes as the air and water temperature entering the
ice machine changes. These variables also determine the
freeze cycle times.
To analyze and identify the proper suction pressure drop
throughout the freeze cycle, compare the published
suction pressure to the published freeze cycle time.
NOTE: Analyze discharge pressure before analyzing
suction pressure. High or low discharge pressure may be
causing high or low suction pressure.
1. Determine the ice machine operating conditions:
Air temp. entering condenser
______
Air temp. around ice machine
______
Water temp. entering sump trough
______
2. Refer to Operating Pressure table (starting on page
223) for ice machine being checked.
Use the operating conditions determined in step 1 to
find the published normal discharge pressures.
Freeze Cycle ______
Harvest Cycle ______
3. Perform an actual suction pressure check.
Freeze Cycle
psig (kPa)
1 Minute into the
Freeze Cycle
__________
Middle of Freeze Cycle
__________
End of Freeze Cycle
__________
4. Compare the actual suction pressure (step 3) with
the published suction pressure (step 2).
NOTE: The suction pressure is normal when the
actual pressure falls within the published pressure
range for the ice machine’s operating conditions.
It is normal for the suction pressure to be higher
at the beginning of the Freeze cycle (when load is
greatest), then drop throughout the Freeze cycle.
Part Number STH025 11/16
145
Suction Pressure High Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist” on
page 136
Discharge Pressure
• Discharge pressure is too high and is affecting suction
pressure – refer to “Freeze Cycle Discharge Pressure
High Checklist” on page 143
Improper Refrigerant Charge
• Overcharged (also see “Freeze Cycle Discharge
Pressure High Checklist” on page 143)
•
Wrong type of refrigerant
•
Non condensable in system
Components
• Harvest valve leaking
•
Harvest pressure solenoid valve leaking
•
TXV flooding
•
Defective compressor
Other
• Non-Manitowoc components in system
146
Part Number STH025 11/16
Suction Pressure Low Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist” on
page 136
Discharge Pressure
• Discharge pressure is too low and is affecting low
side – refer to “Freeze Cycle Discharge Pressure Low
Checklist” on page 144
Improper Refrigerant Charge
• Undercharged
•
Wrong type of refrigerant
Other
• Non-Manitowoc components in system
•
Improper water supply over evaporator – refer to
“Water System Checklist” on page 137
•
Restricted/plugged liquid line drier
•
Restricted/plugged tubing in suction side or liquid
line of refrigeration system
•
TXV starving
Part Number STH025 11/16
147
Comparing Evaporator Inlet and Outlet Temperatures
- Self-contained & Remote Condenser Single
Expansion Valve Machines
The temperatures of the suction lines entering and
leaving the evaporator alone cannot diagnose an ice
machine. However, comparing these temperatures during
the freeze cycle, along with using Manitowoc’s Freeze
Cycle Refrigeration System Operational Analysis Table,
can help diagnose an ice machine malfunction.
The actual temperatures entering and leaving the
evaporator vary by model, and change throughout
the freeze cycle. This makes documenting the “normal”
inlet and outlet temperature readings difficult. The key
to the diagnosis lies in the difference between the two
temperatures five minutes into the freeze cycle. These
temperatures should be within 7° of each other.
Use this procedure to document freeze cycle inlet and
outlet temperatures.
1. Navigate to Service / Real Time Data / Time & Temp
/ T3 & T4 Thermistors (See “Service Menu” on page
79 for details).
2. Wait five minutes into the freeze cycle.
3. Record the evaporator inlet (T3) and outlet (T4)
temperatures at 5 minutes into the freeze cycle.
Determine the difference.
4. Record the information on the table.
148
Part Number STH025 11/16
Harvest Valve Analysis
Symptoms of a harvest valve remaining partially open
during the freeze cycle can be similar to symptoms
of either an expansion valve or compressor problem.
The best way to diagnose a harvest valve is by using
Manitowoc’s Ice Machine Freeze Cycle Refrigeration
System Operational Analysis Table.
Use the following procedures to determine if a harvest
valve is remaining partially open during the freeze cycle.
SELF-CONTAINED OR REMOTE CONDENSER MODELS
HARVEST VALVE ANALYSIS
1. Wait five minutes into the freeze cycle.
2. Feel the inlet of the harvest valve(s).
Importan
Feeling the harvest valve outlet or across the harvest
valve itself will not work for this comparison.
The harvest valve outlet is on the suction side (cool
refrigerant). It may be cool enough to touch even if
the valve is leaking.
3. Feel the compressor discharge line.
4. Compare the temperature of the inlet of the harvest
valves to the temperature of the compressor
discharge line.
nWarning
The inlet of the harvest valve and the compressor
discharge line could be hot enough to burn your
hand. Just touch them momentarily.
Part Number STH025 11/16
149
Findings
Comments
The inlet of the harvest valve
Normal Operation
is cool enough to touch and This is normal as the discharge
the compressor discharge line line should always be too hot
is hot.
to touch and the harvest valve
inlet, although too hot to
Cool & Hot
touch during harvest, should
be cool enough to touch after
5 minutes into the freeze cycle.
The inlet of the harvest
Leaking Harvest Valve
valve is hot and approaches The harvest valve inlet did not
the temperature of a hot
cool down during the freeze
compressor discharge line.
cycle due to continual leakage
of compressor discharge gas
Hot & Hot
through the valve.
Both the inlet of the harvest
Harvest Valve Not Leaking
valve and the compressor
The compressor discharge
discharge line are cool enough line should not be cool to the
to touch.
touch 5 minutes into the freeze
cycle. This symptom would not
Cool & Cool
be caused by a harvest valve
leaking.
5. Record your findings on the table.
150
Part Number STH025 11/16
Discharge Line Temperature Analysis
GENERAL
Knowing if the discharge line temperature is increasing,
decreasing or remaining constant can be an important
diagnostic tool. Compressor discharge line temperature
on a normally operating ice machine steadily increases
throughout the freeze cycle.
Ambient air temperatures affect the discharge line
temperature.
Higher ambient air temperatures at the condenser and/
or higher inlet water temperature = higher discharge line
temperatures at the compressor.
Lower ambient air temperatures at the condenser and/
or lower supply water temperature= lower discharge line
temperatures at the compressor.
Regardless of ambient and water temperatures, the
freeze cycle discharge line temperature will be higher
than 150°F (66°C) at the end of the freeze cycle.
PROCEDURE
1. Navigate to Service / Real Time Data / Time & Temp /
T2 Thermistor (See page 81 Service Menu Navigation
for details).
2. Observe the discharge line temperature (T2) for the
last three minutes of the freeze cycle and record on
the table.
Part Number STH025 11/16
151
Water Regulating Valve
Problem (Freeze Cycle)
Valve not maintaining discharge pressure.
•
Valve incorrectly set, dirty or defective. Adjust valve
to correct discharge pressure for your model (refer
to cycle times/24 hour productions charts), clean or
replace valve.
Discharge pressure extremely high; Liquid line entering
receiver feels hot.
• Water regulating valve incorrectly set or not opening
•
Insufficient water volume - undersized/kinked lines,
mineral or scale buildup in lines. Verify Head Pressure
Control Valve operation before changing water
regulating valve.
Discharge pressure low, Liquid line entering receiver
feels warm to hot.
• Ice machine low on charge. Verify “Total System
Refrigerant Charge” on page 222.
Water cooled unit requires high pressure water
regulating valve.
• Water pressure forces water regulating valve open.
152
Part Number STH025 11/16
Final Analysis - Self-contained Air, Water & Remote
Condenser Models
The column with the highest number of Checkmarks
identifies the refrigeration problem.
COLUMN 1 - HARVEST VALVE LEAKING
Replace the valve as required.
COLUMN 2 - LOW CHARGE/TXV STARVING
Normally, a starving expansion valve only affects the
freeze cycle pressures, not the harvest cycle pressures. A
low refrigerant charge normally affects both pressures.
Verify the ice machine is not low on charge before
replacing an expansion valve.
1. Add refrigerant charge to verify a low charge (air and
water self-contained only). Do not add more than
30% of nameplate refrigerant charge. If the problem
is corrected, the ice machine is low on charge.
*Do not add charge to remote models. The
symptoms of a remote low on charge will result in a
safety limit #1 in cool ambient temperatures. Check
the liquid line temperature at the ice machine. The
liquid line will be hot with a normal or below normal
head pressure in freeze when the ice machine is low
on refrigerant.
2. Find the refrigerant leak. The ice machine must
operate with the nameplate charge. If the leak
cannot be found, proper refrigerant procedures
must still be followed Change the liquid line drier.
Then, evacuate and weigh in the proper charge.
3. If the problem is not corrected by adding charge, the
expansion valve is faulty.
Part Number STH025 11/16
153
COLUMN 3 - TXV FLOODING OR REFRIGERANT
OVERCHARGE
A loose or improperly mounted expansion valve
bulb causes the expansion valve to flood. Check bulb
mounting, insulation, etc., before changing the valve.
Verify refrigerant amount is correct by weighing
recovered refrigerant before replacing a TXV.
COLUMN 4 - COMPRESSOR
Replace the compressor. To receive warranty credit, the
compressor ports must be properly sealed by crimping
and soldering them closed.
154
Part Number STH025 11/16
SYMPTOM #3 & #4 HARVEST PROBLEMS
SELF‑CONTAINED AIR, WATER & REMOTE
CONDENSER MODELS
Normal Ice Cube
Melted Out ice Cube
Definition of a harvest problem; At the end of a 3.5
minute harvest cycle the slab of ice is still contacting the
evaporator. The slab of ice may or may not be removable
by hand.
Harvest problems can be split into two symptoms.
•
Symptom 3 - Normal sheet of cubes at the end of
the harvest cycle. Ice is difficult to remove from the
evaporator by hand. Once removed the back of the
cubes are square and show no signs of melting. This
indicates a refrigeration problem. The source of the
problem could be in the freeze or harvest cycle. Use
the appropriate flow chart (in Troubleshooting) to
determine the cause of the problem.
•
Symptom 4 - Melted sheet of cubes at the end of
the harvest cycle. Ice can be removed rather easily
by hand. The back of the cubes are misshapen and
melted. This indicates something is preventing the ice
slab from releasing. Follow the appropriate flow chart
(in Troubleshooting) to determine the cause of the
problem. A manual cleaning procedure must always
be performed when this problem is encountered.
Part Number STH025 11/16
155
156
Part Number STH025 11/16
NO
Low production,
Normal fill pattern, long
harvest cycle, Possible SL #2,
Back of cubes are not melted
START
YES
Is head pressure high &
suction pressure low
in harvest?
(Refer to Pressure Charts)
YES
Is harvest valve energized?
YES
Discharge line temperature is greater than
150°F at the end of the freeze cycle?
NO
YES
NO
Replace
harvest
valve
Refer to Sequence of
Operation &
Wiring Diagrams
Refer to
Symptom #2
Freeze Cycle
Operational
Analysis Table
Ice Machine Will Not Harvest - Freeze Cycle is Normal and Ice Cubes are Not Melted After Harvest
SYMPTOM #3 SELF-CONTAINED AIR OR WATER-COOLED
Part Number STH025 11/16
157
Traditional Remote
Air-cooled Condenser?
NO
Self Contained
Water-cooled
Condenser?
NO
Self Contained
Air-cooled Condenser?
NO
YES
YES
YES
Refer to Symptom #3
Traditional Remotes Only Chart
NO
Maintains correct
pressure in freeze cycle?
NO
Fan cycling
control operates correctly
in freeze cycle?
Adjust or Replace
Water Regulating
Valve
YES
Replace Fan
Cycling Control
YES
NO
YES
YES
Repeat this flowchart
& verify all data
Are you sure Discharge line
temperature is normal?
Stops water flow 100%
in harvest cycle?
NO
Fan cycling
control opens below setpoint
in harvest cycle?
158
Part Number STH025 11/16
Liquid Line
Temperature Hot
System low on refrigerant
Replace Headmaster
NO
Liquid Line
Temperature Warm
(body temperature)
Liquid Line Temperature Cool
Wet condenser
with water during
freeze cycle
YES
START
Fails at night or in low
ambient - Operates
normally above 70F/21C
YES
Discharge line temperature
is normal at the end of the
freeze cycle?
All Remotes = >150F/65C
YES
Normal ice fill, long harvest cycle,
possible SL #2, back of cubes are
not melted at the end of harvest cycle
Refer to Symptom
#2 - Freeze Cycle
Analysis Chart
NO
Traditional Remote Ice Machine - Long Harvest/Low Production/Intermittent Safety Limit 2
SYMPTOM #3 - REMOTE CONDENSER
Part Number STH025 11/16
159
Refer to Symptom #4 Will Not Harvest, Freeze
Cycle Normal & Ice Cubes are
Melted Flowchart
Is harvest valve energized?
YES
YES
Is head pressure normal &
suction pressure normal
in harvest?
NO
Is head pressure low &
suction pressure low
in harvest?
NO
Is head pressure high &
suction pressure low
in harvest?
NO
Repeat this flowchart &
verify all data
Refer to Harvest Pressure
Regulating Valve
Diagnostics
YES
Replace Harvest Valve
YES
Single Evaporator Systems with Dual Harvest Valves: If one Harvest Vavle is open and the other is restricted / stuck closed you may have
normal harvest pressures. Look for ice not melting on one side of the evaporator.
Refer to Sequence of
Operation &
Wiring Diagrams
NO
YES
160
Part Number STH025 11/16
NO
Does ice remain frozen to
the evaporator at the end of
the harvest cycle?
NO
START
Are back of the cubes
melted at end of
harvest cycle?
Refer to
Symptom #2
Freeze Cycle
Operational
Analysis Table
YES
YES
NO
Is water flowing over the
evaporator in the first 45 seconds
of harvest?
YES
Is Ice
Machine level?
YES
NO
Refer to
Dump Valve
Diagnostics
Level Ice
Machine
Ice Machine Will Not Harvest - Freeze Cycle is Normal and Ice Cubes are Melted After Harvest
SYMPTOM #4 SELF-CONTAINED AIR, WATER-COOLED OR OR REMOTE
Part Number STH025 11/16
161
Refer to Heavily Scaled
Cleaning Procedure
YES
Refer to Symptom #2
Freeze Cycle Operational
Analysis Table
NO
Discharge line temperature is greater than
150ºF at the end of the freeze cycle?
NO
Is the evaporator dirty?
(Dry evaporator first then check)
NO
Refer to Manual
Cleaning Procedure
YES
THIS PAGE INTENTIONALLY LEFT BLANK
162
Part Number STH025 11/16
Component Check Procedures
Electrical Components
CONTROL BOARD, DISPLAY BOARD AND TOUCH PAD
FUNCTION
The control board, display board and touch pad provide
user input and control the ice machine sequence of
operation.
NOTE: Anytime power is supplied to wires #55 & #56 on
the control board, the “Display” and “Micro” lights should
flash like a heartbeat. The two green lights are located on
the top right corner of the control board.
Display Diagnostics
Symptom - Micro light flashes and display light is off.
1. Disconnect both ends of the communication cable
running between the control board and the back of
the display module and inspect for bent or damaged
pins. Reconnect after inspection.
2. Reboot ice machine by disconnecting power for
a minimum of 15 seconds, reapplying power and
checking micro light for normal flashing.
3. Press the power button on the display and watch the
green Display light on the control board.
A. Display light flashes- Test run ice machine.
B.
Display light is off - Replace communication
cable first as a test, then replace display/touch
pad assembly if required.
Part Number STH025 11/16
163
Control Board Diagnostics
1. Micro light is not flashing a heartbeat.
2. Disconnect line voltage power supply to the ice
machine and wait a minimum of 15 seconds, then
reapply power.
A. Micro light flashes - continue with step 3.
B.
Micro light is off - Replace control board.
3. Perform the following keystrokes on the display.
•
Press Menu, scroll down to Service and press right
arrow
•
Scroll down to Diagnostics and press right arrow
•
Display reads Control Board, press right arrow
•
Display reads Self Check, press right arrow to start
control board test
The control board performs a self test. As the test
progresses the display will show Checkmarks at the top
left of the display screen. When the fifth Checkmark
appears the display will show “Status Failed” or “Status
Passed”.
•
Status passed -The control board is functioning
normally, continue with touch pad diagnostics on
next page.
•
Status failed - Replace control board.
164
Part Number STH025 11/16
Touch Pad Diagnostics
Follow the control board diagnostics to “Status Passed”.
Perform the following keystrokes on the display.
•
Display reads Status Passed, press the right arrow
•
Display reads Pass Yes, press the right arrow
•
Display reads Key Pad Test, press the right arrow
4. Test the functionality of all buttons on the touch
pad.
NOTE: Pushing the power button will start and stop the
ice machine. Testing it last will allow the ice machine to
continue running a freeze cycle.
•
As you press the buttons the first letter of the
corresponding word will flash indicating the push
button is operating correctly or the corresponding
arrow or zero will flash.
•
Press the right arrow 5 times rapidly to exit.
Part Number STH025 11/16
165
CONTROL BOARD RELAY TEST
The control board can be set to energize all relays for 3.5
minutes. This allows testing to verify control board relays
are closed and line voltage is available for ice machine
components - Water pump, dump valve, water inlet valve,
harvest valve(s), air compressor(s), contactor/compressor/
fan motor - The fan cycle control must close to energize
the fan motor.
1. Press power button to turn off ice machine.
2. Perform the following keystrokes on the display.
•
Press Menu, scroll down to Service and press the right
arrow
•
Scroll down to Diagnostics, press the right arrow and
select Diagnostics
•
Display reads Control Board, press right arrow
•
Scroll down to enbl relays and press right arrow to
start control board test
3. The control board will energize all relays and the
red light next to the relay. The red light indicates the
relay coil is energized.
4. Test for line voltage at the individual components.
A. Line voltage is present and the component is
non functional - Replace component
B.
Voltage is not present at the component Proceed to step 5
5. Refer to wiring diagram and determine wire location
on the 9 pin molex connector for the component
you are testing.
6. Check for line voltage at the control board 9 pin
molex connector.
A. Line voltage at 9 pin connector - Repair wiring
to component
B.
166
No power at 9 pin connector - Replace control
board
Part Number STH025 11/16
PROGRAMMING A REPLACEMENT CONTROL BOARD
Indigo™ replacement control boards require the Model
number to be entered to activate the appropriate look up
tables for operation and diagnostic. This can be done two
different ways, USB Setup or Manual Setup.
USB Setup - Applicable when the control board is
operational and has a mechanical issue such as a sticking
relay. The asset data is transferred to the replacement
control board from the faulty control board. Refer to page
97 “Exporting Data To A Flash Drive” before installing the
replacement board.
Manual Setup - Applicable when the control board is
non-operational or data from the faulty board is suspect.
Install replacement control board and reapply power.
•
G series (blue) control boards will go directly to the
Replacement Control Board screen and pause for
input - Select either “Manual” or “USB” setup option.
•
E series (green) control boards require navigation to
the Replacement Control Board (Repl Cntl Bd) screen.
1. Press the Menu button.
2. Press the Down arrow until Service is highlighted,
then press the Checkmark.
3. Scroll down to Replacement Control Board and press
the Checkmark.
4. Select “Manual Setup” and press the Checkmark.
Verify the date correctly auto populates.
•
Yes - Go to step 5
•
No - Press the right arrow to activate the cursor, then
use up/down arrows to enter the correct date.
Part Number STH025 11/16
167
5. Scroll down until brackets are in the space below
“Input Model #”. Press the right arrow to activate
the blinking cursor, then use the up/down arrows
to select the first character in the model number.
Use the right arrow to move to the next space. Add
characters in this manner until the model number
is complete. The model must include the dash and
the last three numbers to indicate the electrical
requirements ( example -261). Press the right arrow
until the cursor disappears.
6. Scroll down until brackets are in the space below
“Input Serial#”. Press the right arrow to activate the
blinking cursor, then use the up/down arrows to
select the first character in the serial number. Use
the right arrow to move to the next space. Add
characters in this manner until the serial number
is complete. Press the right arrow until the cursor
disappears.
7. Scroll down and select exit, then press checkmark.
8. Reboot ice machine by disconnecting power for a
minimum of 15 seconds, then reapply power.
168
Part Number STH025 11/16
MAIN FUSE
FUNCTION
The control board fuse stops ice machine operation if
electrical components fail, causing high amp draw.
SPECIFICATIONS
The main fuse is 250 Volt, 8 amp.
nWarning
High (line) voltage is applied to the control board
(terminals #55 and #56) at all times. Removing the
control board fuse or pressing the On/Off button will
not remove the power supplied to the control board.
CHECK PROCEDURE
1. If the display is energized or the bin switch light is on
with the water curtain/ice dampers closed, the fuse
is good.
nWarning
Disconnect electrical power to the entire ice machine
before proceeding.
2. Remove the fuse. Check for continuity across the
fuse with an ohmmeter.
Reading
Open (OL)
Closed (O)
Part Number STH025 11/16
Result
Replace fuse
Fuse is good
169
BIN SWITCH
FUNCTION
Movement of the water curtain/ice dampers control bin
switch operation. The bin switch has two main functions:
1. Terminating the Harvest cycle and returning the ice
machine to the Freeze cycle. This occurs when the
bin switch is opened and closed again within 30
seconds during the Harvest cycle.
2. Automatic ice machine shut-off.
If the storage bin is full at the end of a Harvest cycle,
the sheet of cubes fails to clear the water curtain/ice
dampers and holds it open. After the water curtain/
ice dampers are held open for 30 seconds, the ice
machine shuts off. The ice machine remains off until
enough ice is removed from the storage bin to allow
the sheet of cubes to drop clear of the water curtain/
ice dampers. As the water curtain/ice dampers swing
back to the operating position, the bin switch closes
and the ice machine restarts, provide the 3-minute
delay has expired.
Importan
The water curtain/ice dampers must be ON (bin
switch closed) to start ice making.
SPECIFICATIONS
The bin switch is a magnetically operated reed switch.
The magnet is attached to the lower right corner of the
water curtain and both ends of ice dampers.
The bin switch is connected to a varying D.C. voltage
circuit. (Voltage does not remain constant.)
NOTE: Because of a wide variation in D.C. voltage, it is
not recommended that a voltmeter be used to check bin
switch operation.
170
Part Number STH025 11/16
Diagnostics
SYMPTOMS
Bin Switch Fails Open
G Model control boards or E Model control boards with
firmware version Rev.2.047 or higher.
•
The ice machine will not start an ice making cycle and
the display indicates “Full Bin”.
•
The ice machine displays “Full Bin Remove Ice” in the
clean cycle.
E Control Boards with firmware versions prior to Rev.2.047
•
The ice machine will not start an ice making cycle and
the display indicates “Curtain Open”.
•
The ice machine will run in the clean cycle.
Bin Switch Fails Closed
•
When running a “Long Harvest” alert is displayed and
safety limit 2 indicated.
•
May be off on a safety limit 2.
•
The harvest cycle continues after ice opens and closes
the ice damper (harvest cycle is 3.5 minutes).
Part Number STH025 11/16
171
DIAGNOSTICS
1. Verify bin switch, curtain/damper and curtain/
damper magnet are in place.
•
Press the Menu button.
•
Scroll down to Service and press right arrow.
•
Scroll down to Diagnostics and press right arrow
•
Scroll down to Inputs and press right arrow to display
curtain switch readings (Curt SW1, Curt SW2, etc).
2. Open and close the ice damper(s) repeatedly while
observing the display and control board lights.
A. Curtain switch cycles open/closed and control
board light energizes/de-energizes - Bin switch
is operating normally
B.
Curtain switch remains closed and control
board light remains on - Go to step 3
C.
Curtain switch remains open and control board
light remains off - Go to step 3
3. Disconnect bin switch wire from control board.
4. Jumper control board bin switch wire to ground,
press the power button and observe the display and
control board lights.
A. Curtain switch closes, control board light
energizes and ice machine starts - Replace bin
switch
B.
172
Curtain switch remains open and control board
light is off - Verify procedure was correctly
followed - Replace control board.
Part Number STH025 11/16
WATER LEVEL CONTROL CIRCUITRY
FUNCTION
The water level probe controls the water level by sensing
whether water is or is not contacting the water level
probe. The water level probe has three sensing probes.
Two probes are equal in length and are used to measures
conductivity for diagnostics, ice clarity and water miser
options. Factory default settings measure resistance from
both long probes to the short probe.
SPECIFICATIONS
Freeze Cycle Water Level Setting
During the Freeze cycle, the water level probe is set to
maintain the proper water level above the water pump
housing. The water level is not adjustable. If the water
level is incorrect, check the water level probe position.
Reposition or clean the probe as necessary.
Water Inlet Valve Safety Shut-Off
In the event of a water level probe failure, this feature
limits the maximum amount of time the water inlet valve
can remain.
SINGLE EVAPORATOR MODELS
Regardless of the water level probe input, the control
board automatically shuts off the water inlet valve if it
remains on for 12.5 continuous minutes (30 seconds in
prechill and two 6 minute periods in the freeze cycle).
DUAL EVAPORATOR MODELS
Regardless of the water level probe input, the control
board automatically shuts off the water inlet valve if it
remains on for 16.5 continuous minutes (30 seconds in
prechill and two 8 minute periods in the freeze cycle).
Part Number STH025 11/16
173
Prechill & Freeze Cycle Operation
The water inlet valve energizes and de-energizes in
conjunction with the water level probe located in the
water trough.
•
The water inlet valve is ON when there is no water in
contact with the water level probes.
•
The water inlet valve turns OFF after water contacts
the water level probes for 6 continuous seconds.
•
The water inlet valve can cycle ON and OFF once in
the prechill and up to two times in the freeze cycle.
•
Maximum fill time is:
Single evaporator 12.5 minutes
Dual evaporator 16.5 minutes
The water inlet valve energizes in the Prechill cycle and
will de-energize if water touches the high level probe (in
most instances the water trough can’t fill in the prechill
cycle and the water inlet valve will remain energized
into the freeze cycle). The water inlet valve will remain
energized until water contacts the high water probe. The
water inlet valve will cycle ON, and then OFF one more
time to refill the water trough. The water inlet valve is
now OFF for the duration of the freeze cycle.
174
Part Number STH025 11/16
Diagnostics
SYMPTOMS
•
Water trough overfills
•
Water trough will not fill
NOTE: The ice machine will initiate a premature harvest if
the high water level probe circuit is complete and the low
water level probe is open.
WATER TROUGH OVERFILLING DURING THE FREEZE
CYCLE
Step 1 Press the power button and turn off the ice
machine.
Step 2 If water continues to flow with the ice machine
off, disconnect power. If water continues to flow with
power disconnected verify water pressure is below 80
psig before replacing the water inlet valve. If the water
stops continue with next step.
Step 3 Check water level probe mounting and verify
secure wiring connections at the probe and control
board.
Step 4 Scroll to Service/Diagnostics/Inputs and press
down arrow until Wtr Low and Wtr High are displayed.
•
No is displayed on both Wtr low and Wtr high - The
control board is not receiving a sensing water signal Go to next step.
•
Yes is displayed - The control board is receiving a
sensing water signal from the low and high probes Replace the control board.
Part Number STH025 11/16
175
Step 5 Disconnect the water level probe wiring
harness from the control board and ohm harness
and water level probe. Normal readings will show no
resistance.
White
Black
Red
Short Probe
Ohm water Level Probe and Wiring Harness
176
Part Number STH025 11/16
Step 6 When all ohm tests are normal, replace the
control board. When any measurement fails, disconnect
the wiring harness from the water level probe and ohm
the water level probe with the wiring harness removed
from the circuit. Results will determine whether the
wiring harness or probe will need replacement.
Empty Terminal
Short Probe
Ohm Water Level Probe
Part Number STH025 11/16
177
WATER TROUGH WILL NOT FILL
Step 1
Verify water is supplied to the ice machine.
Step 2 Scroll to Service/Diagnostics/Inputs and press
down arrow until Wtr Low and Wtr High are displayed.
A. Yes is displayed - Control board is receiving a
sensing water signal. Proceed to step 3.
B.
No is displayed - Control board is not receiving
a sensing water signal. Check for voltage at the
water inlet valve coil.
Step 3 Disconnect water level probe, observe LCD
display text.
A. No is displayed - Clean the water level probe
and test interconnecting wiring.
B.
Yes is displayed - Replace the Control Board.
Step 4 Ohm probe - Refer to previous page for
procedure.
WATER LEVEL PROBE CIRCUIT CHECK AT CONTROL
BOARD
Wait until prechill cycle starts, then jumper water level
probe connections (2 & 3) on the control board.
A. Wtr High displays yes and the water stops.
Repair wire or replace water level probe.
B.
178
Wtr High displays No and the water continues
to flow. Replace control board.
Part Number STH025 11/16
ICE THICKNESS PROBE (INITIATES HARVEST)
FUNCTION
The ice thickness probe senses ice on the evaporator and
signals the control board to start a harvest cycle.
SPECIFICATIONS
Freeze Time Lock-In Feature
The ice machine control system incorporates a 6 minute
freeze time lock-in feature. This prevents the ice machine
from short cycling in and out of harvest.
Maximum Freeze Time
The maximum freeze time is 35 minutes at which time the
control board automatically initiates a harvest sequence.
Firmware 5.009 or earlier - Maximum freeze time is 60
minutes at which time the control board automatically
initiates a harvest sequence.
Maximum Temperature
Maximum temperature for the ice thickness probe is
120°F (49°C). Do not clean probe in a dishwasher or
expose to temperatures above the maximum.
Part Number STH025 11/16
179
Ice Thickness Check
The ice thickness probe is factory-set to maintain the ice
bridge thickness at 1/8 in. (3 mm).
NOTE: Make sure the water curtain/splash shields are in
place when performing this check. It prevents water from
splashing out of the water trough. Remove the curtain to
make an adjustment, then replace immediately after the
adjustment is made.
1. Inspect the bridge connecting the cubes. It should
be about 1/8 in. (3 mm) thick.
2. If adjustment is necessary, turn the ice thickness
probe adjustment screw clockwise to increase
bridge thickness or counterclockwise to decrease
bridge thickness. Set a 9/32" gap between the ice
thickness probe and evaporator as a starting point.
Then adjust to achieve 1/8" ice thickness.
3. Make sure the ice thickness probe wire and the
bracket do not restrict movement of the probe.
1/8" (3 mm)
ICE BRIDGE THICKNESS
ADJUSTING
SCREW
PLACE 9/32" (7 mm) DRILL
BIT HERE TO SET INTIAL GAP
ICE THICKNESS ADJUSTMENT
180
Part Number STH025 11/16
Diagnostics
ICE MACHINE CYCLES INTO HARVEST BEFORE ICE
CONTACTS THE ICE THICKNESS PROBE
Premature harvest symptoms
•
Low ice production
•
Thin ice in bin
•
Freeze cycles are faster than published cycle times
1. Turn off power and inspect ice thickness probe for
physical damage. Look for bulging, cracks around
the nipple or deformed pivot pins.
2. Verify ice thickness probe gap is approximately 9/32"
(7 mm)
3. Make sure the ice thickness probe wire doesn’t
restrict movement.
4. Perform Ice Thickness Probe tap test:
•
Press the menu button, scroll down to Service,
press the right arrow, scroll down to Real Time Data,
press right arrow - With the brackets around Time
& Temp press the right arrow - Scroll down until
100Hz &120Hz are displayed. Slowly increasing and
decreasing numbers typically in the 200Hz to 300Hz
range will display to the right of 100Hz &120Hz.
•
Lift the Ice Thickness Probe and continuously tap the
nipple while watching the numbers to the right of
the 100Hz and 120Hz. There is a slight delay while
tapping.
Pass
Fail
Numbers increasing into the thousands indicates
a properly working ice thickness probe and
control board.
Numbers do not move or do not increase into
the thousands - Ohm the ice thickness probe.
Part Number STH025 11/16
181
5. Ohm Ice Thickness Probe
NOTE: Verify meter leads are properly connected to VOM
with the red meter lead connected to positive & the black
meter lead connected to negative.
Lead tips must be needle style to make contact with
the terminal. Notched probes are too wide to make
contact and must not be used.
•
Disconnect Ice Thickness Probe from control board
•
Connect red meter lead to the red wire and the black
meter lead to the black wire - Normal readings = 1.4
to 2.5 KΩ’s.
•
Reverse leads - Connect black meter lead to the
red wire, red meter lead to the black wire - Normal
readings = 1.2 to 1.5 KΩ’s.
Pass
Fail
Ohm values are within range - Check control
board voltage at the ice thickness probe
connection.
Replace ice thickness probe.
6. Check control board voltage
•
Set VOM to DC voltage scale - Check voltage across
the top and bottom pin - Normal readings = 3.25 to
3.35 VDC.
Pass
Fail
182
Control board voltage is normal
Replace control board
Part Number STH025 11/16
ICE MACHINE DOES NOT CYCLE INTO HARVEST
Will not harvest symptoms
•
Low ice production
•
Thick ice in bin
•
Large sheet of ice on evaporator
•
Harvest cycle doesn’t start
•
Freeze cycles are longer than published cycle times
If ice is on the evaporator initiate a manual harvest cycle
by performing the following keystrokes.
•
Press Menu
•
Scroll down to Service and press right arrow
•
Scroll down to Manual Harvest and press right arrow A new freeze cycle will start after the manual harvest
cycle is complete.
NOTE: Ice must be off the evaporator before starting the
procedure.
1. Disconnect the ice thickness probe from the control
board and turn ice machine off, then reboot the
control board by disconnecting and reconnecting
line voltage to the ice machine.
2. Wait six minutes into the freeze cycle (timing starts
when the water pump energizes).
•
Ice Machine cycles into harvest normally -
•
Ice machine will not cycle into harvest - Replace
control board.
Pass
Fail
Ice machine cycles into harvest
Perform 6 steps in “Ice Machine Cycles into Harvest
Before ice Contacts the Ice Thickness Probe” on page
181 to test ice thickness probe and control board.
Ice machine will not cycle into harvest
Replace control board
Part Number STH025 11/16
183
HIGH PRESSURE CUTOUT (HPCO) CONTROL
FUNCTION
Stops the ice machine if subjected to excessive high-side
pressure. The HPCO control is normally closed, and opens
on a rise in discharge pressure.
SPECIFICATIONS
Specifications
Cut-Out
Cut-In
450 psig ±7
300 psig ±10
(3102 kPa ±48 31 bar ±.48)
(2068 kPa 20.68 bar)
Automatic Reset
SYMPTOM
Opening the HPCO will cause the control board to initiate
a 60 minute delay. The display counts down from 60
minutes to 0 minutes, at which point the ice machine
attempts a restart. If the HPCO is closed the ice machine
will continue to run. If the HPCO remains open after the
60 minute delay or reopens when the compressor starts,
the ice machine will start another 60 minute delay period.
1. Machine is off and the display indicates
“Delay XX min, HPCO Active”
2. Machine is running and the display has an alert
triangle - Press left arrow to display “HPC Fault”.
184
Part Number STH025 11/16
CHECK PROCEDURE
Symptom #1 Machine is off and the display indicates
“Delay xx min, HPCO Active”.
1. Leave all wiring connectors attached and perform
testing within the 60 minute time delay period
2. Check for line voltage at P9 connector on control
board (Two wire connector adjacent to 9 pin
connector).
A. Line voltage present - HPCO switch has reset
and closed.
B.
No line voltage present - HPCO switch is open.
Verify pressure - Below cut-in replace HPCO Above cut-in find root cause problem.
3. Depending on timing either wait for the delay
period to end or start a new freeze cycle by cycling
the power button.
A. HPCO is open - Another 60 minute delay period
starts.
B.
HPCO closed - A 3.5 minute harvest cycle starts
followed by an ice making cycle.
4. Run the system to see if the control trips at the rated
pressure. If HPCO opens at a pressure significantly
lower or higher than the control setting of 450 psig
replace the HPCO.
5. If the control opens at the correct pressure find the
root cause - Fan motor, dirty condenser, refrigeration
system issue, etc.The ice machine will go to an initial
start sequence if the HPCO is closed. If the HPCO is
open, another 60 minute delay period starts. When
the compressor relay closes the control board checks
the HPCO.
Part Number STH025 11/16
185
Symptom #2 Machine is running and the display has a
flashing alert triangle and indicates “HPC Fault” after
the left arrow is pressed
1. Navigate to the event log on the Service menu. Scroll
down to HPC Fault EO5. Open the event and view
when and how often HPCO Fault has occurred.
2. If this is a one time event it may be intermittent and
caused by conditions around the unit changing. For
example: High ambient temperature, water turned
off to condenser (water cooled unit) etc.
3. Run the system to see if the control trips at the rated
pressure. If HPCO opens at a pressure significantly
lower than the control setting of 450 psig replace the
HPCO.
4. If the control opens at the correct pressure (+-10
lbs) find the root cause - Fan motor, dirty condenser,
refrigeration system issue, etc.
186
Part Number STH025 11/16
FAN CYCLE CONTROL
FUNCTION
Cycles the fan motor on and off to maintain proper
operating discharge pressure.
The fan cycle control closes on an increase, and opens on
a decrease in discharge pressure.
SPECIFICATIONS
Model
I0300 / I0320 I0520
I0450 / I0500 / I0600
I0606 / I0850 / I0906
JC0995
I1000 / I1106 / I1200
I1400 / I1406/ I1800
Specifications
Cut-In (Close)
250 ±5
(1723 kPa ±.34)
(17.23 bar ±.34)
Cut-Out (Open)
200 ±5
(1517 kPa ±.34)
(15.17 bar ±.34)
275 psig ±5
(1896 kPa ±34)
(18.96 bar±.34)
225 psig ±5
(1551 kPa ±34)
(15.51 bar ±.34)
CHECK PROCEDURE
1. Verify fan motor windings are not open or grounded,
and fan spins freely.
2. Connect manifold gauges to ice machine.
3. Hook voltmeter in parallel across the fan cycle
control, leaving wires attached.
4. Refer to chart below.
FCC Setpoint:
Above Cut-In
Below Cut-Out
Reading
Should Be:
0 Volts
Line Voltage
Part Number STH025 11/16
Fan
Should Be:
Running
Off
187
THERMISTORS
FUNCTION
Thermistor resistance values change with temperature.
The value supplied to the control board is used to identify
temperature at the thermistor location.
SPECIFICATIONS
Temperature of
Thermistor
°C
-30° - -20°
-20° - -10°
-10° - 0°
0° - 10°
10° - 20°
20° - 30°
30° - 40°
40° - 50°
50° - 60°
60° - 70°
70° - 80°
80° - 90°
90° - 100°
100° - 110°
110° - 120°
120° - 130°
130° - 140°
140° - 150°
150° - 160°
160° - 170°
170° - 180°
180° - 190°
190° - 200°
188
Resistance
°F
-22° - -4°
-4° - 14°
14° - 32°
32° - 50°
50° - 68°
68° - 86°
86° - 104°
104° - 122°
122° - 140°
140° - 158°
158° - 176°
176° - 194°
194° - 212°
212° -230°
230° - 248°
248° - 266°
266° - 284°
284° - 302°
302° - 320°
320° - 338°
338° - 356°
356° - 374°
374° - 392°
K Ohms (x 1000)
820.85 - 466.35
466.35 - 269.05
269.05 - 160.70
160.70 - 98.930
98.930 - 62.015
62.015 - 39.695
39.695 - 25.070
25.070 - 17.481
17.481 - 11.860
11.860 - 8.1900
8.1900 - 5.7530
5.7530 - 4.1015
4.1015 - 2.9735
2.9735 - 2.1885
2.1885 - 1.6290
1.6290 - 1.2245
1.2245 - 0.9319
0.9319 - 0.7183
0.7183 - 0.5624
0.5624 - 0.4448
0.4448 - 0.3530
0.3530 - 0.2831
0.2831 - 0.2273
Part Number STH025 11/16
Part Number STH025 11/16
QuietQube
1 Evaporator with 2 Circuits or
2 Evaporators
RCU Air-Cooled
T4
T4
QuietQube
1 Evaporator with 1 Circuit
RCU
Air-Cooled
T3
T4
30" & 48"
1 Evaporator with 2 Circuits
RCU
Air-Cooled
T4
T3
30"
1 Evaporator with 1 Circuit
RCU
Air-Cooled
T4
T4
T3
T3
T3
T3
T2
T2
T2
T2
T1
T1
T1
T1
T1
T1
T2
T2
Evaporator Evaporator Evaporator Out Compressor Condenser Receiver Receiver
In
Out for 1st for 2nd circuit
Discharge Liquid Line
Inlet
Outlet
or 2nd
circuit
Evaporator
30" & 48"
1 Evaporator with 2 Circuits
IMH
Air-Cooled & Water-Cooled
22" & 30"
1 Evaporator with 1 Circuit
IMH
Air-Cooled & Water-Cooled
Ice Machine
Description
TEMPERATURE SENSOR LOCATION
Thermistor Matrix
Four thermistors are located on the ice machine. They are
labeled T1, T2, T3, T4.
189
SYMPTOM
Alert icon on the display is flashing and the alert indicates
a T1, T2, T3, or T4 Fault.
CHECK PROCEDURE
•
Press the Menu button.
•
Scroll down to Service and press right arrow.
•
Scroll down to Diagnostics and press right arrow
•
Scroll down to Temp Sensors and press right arrow to
display thermistor temperature readings.
NOTE: An open thermistor will display -22°F (-30°C) and a
shorted thermistor displays 475°F (246°C).
Thermistor Test
1. Disconnect thermistor from control board and
measure resistance.
2. Measure temperature at the thermistor.
3. Compare measured resistance/temperature readings
to resistance/temperature relationship chart.
A. Within 10% of the published resistance value Thermistor is good
B.
Not within 10% of the published resistance
value - Thermistor is defective.
Control Board Test
1. Disconnect thermistor from control board - The
display temperature reading, dropping to -22°F
(-30°C) indicates the control board is good.
2. Short thermistor pins - The display temperature
reading, climbing to 475°F (246°C) indicates the
control board is good.
190
Part Number STH025 11/16
HARVEST ASSIST AIR PUMP
FUNCTION
The air pump helps break the vacuum between the sheet
of ice and the evaporator which results in shorter harvest
cycles.
SPECIFICATIONS
115 Volt or 230 Volt - matches the ice machine voltage.
CHECK PROCEDURE
1. The air pump is wired in parallel with the harvest
valve - Verify the ice machine is in the harvest cycle
and the harvest valve is energized.
2. If there is voltage at the air pump connector, use
a volt ohm meter to verify there is no continuity
through the motor windings then replace motor.
Part Number STH025 11/16
191
COMPRESSOR ELECTRICAL DIAGNOSTICS
The compressor does not start or will trip repeatedly on
overload.
Check Resistance (Ohm) Values
NOTE: Compressor windings can have very low ohm
values. Use a properly calibrated meter.
Perform the resistance test after the compressor cools.
The compressor dome should be cool enough to touch
(below 120°F/49°C) to assure that the overload is closed
and the resistance readings will be accurate.
SINGLE PHASE COMPRESSORS
1. Disconnect power then remove the wires from the
compressor terminals.
2. The resistance values between C and S and between
C and R, when added together, should equal the
resistance value between S and R.
3. If the overload is open, there will be a resistance
reading between S and R, and open readings
between C and S and between C and R. Allow the
compressor to cool, then check the readings again.
THREE PHASE COMPRESSORS
1. Disconnect power and remove the wires from the
compressor terminals.
2. The resistance values between L1 and L2, between
L2 and L3, and between L3 and L1 should all be
equal.
3. If the overload is open, there will be open readings
between L1 and L2, between L2 and L3, and
between L3 and L1. Allow the compressor to cool,
then check the readings again.
192
Part Number STH025 11/16
CHECK MOTOR WINDINGS TO GROUND
Check continuity between all three terminals and the
compressor shell or copper refrigeration line. Scrape
metal surface to get good contact. If continuity is
present, the compressor windings are grounded and the
compressor should be replaced.
COMPRESSOR DRAWING LOCKED ROTOR
To determine if the compressor is seized, check the amp
draw while the compressor is trying to start.
The two likely causes of this are a defective starting
component or a mechanically seized compressor.
To determine which you have:
1. Install high and low side gauges.
2. Try to start the compressor.
3. Watch the pressures closely.
A. If the pressures do not move, the compressor is
seized. Replace the compressor.
B.
If the pressures move, the compressor is turning
slowly and is not seized. Check the capacitors
and relay.
COMPRESSOR DRAWING HIGH AMPS
The continuous amperage draw on start-up should not
be near the maximum fuse size indicated on the serial
tag.
Part Number STH025 11/16
193
DIAGNOSING START COMPONENTS
If the compressor attempts to start, or hums and trips the
overload protector, check the start components before
replacing the compressor.
Capacitor
Visual evidence of capacitor failure can include a bulged
terminal end or a ruptured membrane. Do not assume a
capacitor is good if no visual evidence is present. A good
test is to install a known good substitute capacitor. Use
a capacitor tester when checking a suspect capacitor.
Clip the bleed resistor off the capacitor terminals before
testing.
Relay
The relay has a set of contacts that connect and
disconnect the start capacitor from the compressor start
winding. The contacts on the relay are normally closed
(start capacitor in series with the start winding). The
relay senses the voltage generated by the start winding
and opens the contacts as the compressor motor starts.
The contacts remain open until the compressor is deenergized.
RELAY OPERATION CHECK
1. Disconnect wires from relay terminals.
2. Verify the contacts are closed.
Measure the resistance between terminals 1 and 2.
No continuity indicates open contacts. Replace the
relay.
3. Check the relay coil.
Measure the resistance between terminals 2 and 5.
No resistance indicates an open coil. Replace the
relay.
194
Part Number STH025 11/16
PTCR
The PTCR allows current to flow through the start winding
at compressor startup. Current flow heats the ceramic
discs in the PTCR. The electrical resistance increases with
temperature and stops all except a trickle of current
flow through the start winding. The small flow of current
keeps the PTCR hot (260°F/127°C) and the start winding
out of the circuit.
The PTCR must be cooled before attempting to start the
compressor, otherwise the PTCR will heat up too quickly
and stop current flow through the start winding before
the compressor motor reaches full speed.
nWarning
Disconnect electrical power to the entire ice machine
at the building electrical disconnect box before
proceeding.
NOTE: If a PTCR is dropped internal damage can occur
to the ceramic PTCR discs. The ceramic disc can chip and
cause arcing which leads to PTCR failure. Since there is
no way to open the PTCR in order to determine if the
ceramic disc is chipped or not, it must be discarded when
dropped.
Part Number STH025 11/16
195
PTCR Operation Check
1. Visually inspect the PTCR. Check for signs of physical
damage.
NOTE: The PTCR case temperature may reach 210°F
(100°C) while the compressor is running. This is normal.
Do not change a PTCR just because it is hot.
2. Wait at least 10 minutes for the PTCR to cool to room
temperature.
3. Remove the PTCR from the ice machine.
4. Measure the resistance of the PTCR as shown. The
resistance reading must be between:
•
Two Terminal PTCR Black = 24.5 to 45.5 ohms
•
Two Terminal PTCR Blue = 21 to 39 ohms
•
Three Terminal PTCR Tan = 10.5 to 19.5 ohms.
Measure Resistance At Ends
Two Terminal PTCR
Measure Resistance @ Center and End
Leave Jumper Wire Attached
Three Terminal PTCR
196
Part Number STH025 11/16
Refrigeration Components
HEAD PRESSURE CONTROL VALVE
Manitowoc remote systems require head pressure control
valves with special settings. Replace defective head
pressure control valves only with “original” Manitowoc
replacement parts.
Refrigerant Charge Verification
The correct amount of refrigerant (name plate charge) is
required to operate correctly at all ambient conditions.
An ice machine with an overcharge or undercharge of
refrigerant may function properly at higher ambient
temperatures and fails at lower ambient temperatures.
Symptoms of incorrect refrigerant amount are:
•
Works during the day and malfunctions at night, and/
or fails whenever the outdoor temperature drops.
•
A Safety limit is stored in control board memory.
Refrigerant loss and ambient temperature are directly
related to each other. As the ambient temperature drops,
more refrigerant is stored in the condenser.
When the refrigerant charge and ambient temperature
create an undercharge of refrigerant in the freeze cycle,
the receiver dip tube will lose it’s liquid seal. Without
liquid refrigerant to the TXV, the ice machine fails to
make a full sheet of ice in 35 minutes and a safety limit #1
results.
NOTE: When a head pressure control valve is being
replaced or refrigerant charge is suspected, verify the
refrigerant charge is correct by recovering the refrigerant,
weighing and comparing to the nameplate amount.
Refer to Refrigerant Recovery/Evacuation” page 207 for
recovery procedures.
Part Number STH025 11/16
197
Freeze Cycle Operation All Models
The R404A head pressure control valve is non adjustable.
At ambient temperatures of approximately 70°F (21°C)
or above, refrigerant flows through the valve from the
condenser to the receiver inlet. At temperatures below
this (or at higher temperatures if it is raining), the head
pressure control dome’s nitrogen charge closes the
condenser port and opens the bypass port from the
compressor discharge line.
In this modulating mode, the valve maintains minimum
head pressure by building up liquid in the condenser and
bypassing discharge gas directly to the receiver.
Harvest Cycle Operation
Remote Condenser Models
The head pressure control cycles into full bypass due
to the pressure drop when the harvest valve opens.
Refrigerant flows from the compressor to the evaporator
through the harvest valve and the head pressure valve is
out of the circuit.
Diagnostics
FREEZE CYCLE - REMOTE CONDENSER
1. Determine if the coil is clean.
2. Determine the air temperature entering the
condenser.
3. Determine if the head pressure is high or low in
relationship to the outside temperature. (Refer to
the proper “Cycle Times/24-Hour Ice Production/
Refrigerant Pressure Charts” page 223).
4. Determine the temperature of the liquid line
entering the receiver by feeling it. This line is
normally warm; “body temperature.”
5. Using the information gathered, refer to the chart.
198
Part Number STH025 11/16
NOTE: A head pressure control valve that will not
bypass, will function properly with condenser air
temperatures of approximately 70°F (21°C) or above.
When the temperature drops below 70°F (21°C), the
head pressure control valve fails to bypass and the ice
machine malfunctions. Lower ambient conditions can
be simulated by rinsing the condenser with cool water
during the freeze cycle.
Condition
Probable Cause
Discharge Pressure - High
Valve stuck in
Liquid Line Temperature
bypass
- Hot
Discharge Pressure - Low
Valve not
Liquid Line Temperature
bypassing
- Cold
Discharge Pressure - Low Ice Machine Low
Liquid Line Temperature
on Charge
- Hot
Part Number STH025 11/16
Corrective
Measure
Replace valve
Replace valve
Refrigerant
Charge
Verification
199
Harvest Cycle
REMOTE CONDENSER
The head pressure control cycles into full bypass due
to the pressure drop when the harvest valve opens.
Refrigerant flows from the compressor to the evaporator
through the harvest valve and the head pressure valve is
out of the circuit.
Undercharge Symptoms
• Safety limit #1 or Safety limit #2 in control board
memory, a flashing triangle alert and after pressing
left arrow Long Freeze or Long Harvest is displayed.
•
Harvest cycle suction pressure is low.
•
Harvest cycle discharge pressure is low.
•
Liquid line entering receiver feels warm to hot in the
freeze cycle.
Overcharge Symptoms
• Safety limit #2 in control board memory, a flashing
triangle alert and after pressing left arrow Long
Harvest is displayed.
•
Harvest cycle discharge pressure is normal.
•
Freeze cycle time, suction and discharge pressure
are normal and the ice machine will not harvest. The
sheet of ice cubes show little or no sign of melting
when removed from the evaporator after the harvest
cycle has been completed. (If the cubes are melted
you have a release problem, clean the ice machine).
200
Part Number STH025 11/16
HARVEST PRESSURE REGULATING (HPR) SYSTEM
REMOTE CONDENSER ONLY
GENERAL
The harvest pressure regulating (HPR) system includes:
•
Harvest pressure regulating solenoid valve (HPR
solenoid). This is an electrically operated valve which
opens when energized, and closes when
de-energized.
•
Harvest pressure regulating valve (HPR valve). This is a
pressure regulating valve which modulates open and
closed, based on the refrigerant pressure at the outlet
of the valve. The valve closes completely and stops
refrigerant flow when the pressure at the outlet rises
above the valve setting.
FREEZE CYCLE
The HPR system is not used during the freeze cycle.
The HPR solenoid is closed (de-energized), preventing
refrigerant flow into the HPR valve.
HARVEST CYCLE
During the harvest cycle, the check valve in the discharge
line prevents refrigerant in the remote condenser and
receiver from back feeding into the evaporator and
condensing to liquid.
The HPR solenoid is opened (energized) during the
harvest cycle, allowing refrigerant gas from the top of
the receiver to flow into the HPR valve. The HPR valve
modulates open and closed, raising the suction pressure
high enough to sustain heat for the harvest cycle,
without allowing refrigerant to condense to liquid in the
evaporator.
In general, harvest cycle suction pressure rises, then
stabilizes in the range of 70-100 psig (517-758 kPa).
Exact pressures vary from model to model. Refer to cycle
time/24 hour ice production and operational pressure
charts.
Part Number STH025 11/16
201
HPR DIAGNOSTICS
Steps 1 through 5 can be quickly verified without
attaching a manifold gauge set or thermometer.
All questions must have a yes answer to continue the
diagnostic procedure.
1. Liquid line warm?
(Body temperature is normal)
If liquid line is cooler than body temperature, refer to
“Head Pressure Control Valve” on page 197.
2. Ice fill pattern normal?
Refer to “Ice Formation Pattern” on page 138.
3. Freeze time normal?
“Cycle Times/24-Hour Ice Production/ Refrigerant
Pressure Charts” on page 225
Shorter freeze cycles - Refer to “Head Pressure
Control Valve” on page 197.
Longer freeze cycles - Refer to “Water
System Checklist” on page 137 then refer to
“Troubleshooting By Symptom” on page 119.
4. Harvest time is longer than normal and control
board indicates safety limit #2?
“Cycle Times/24-Hour Ice Production/ Refrigerant
Pressure Charts” on page 225
202
Part Number STH025 11/16
5. Discharge line temperature is greater than 150°F
(66°C) [I0850/I1000 Air/Water Only - 140°F (60°C)]
at the end of the freeze cycle? See “Discharge Line
Temperature Analysis” on page 151
6. Connect refrigeration manifold gauge set to the
access valves on the front of the ice machine.
Establish baseline by recording suction and
discharge pressure and freeze & harvest cycle times.
(Refer to “Cycle Times/24-Hour Ice Production/
Refrigerant Pressure Charts” on page 225 for
data collection detail.
7. Freeze cycle Head Pressure is in the range indicated
in the cycle time/24 hour ice production and
operational pressure chart?
If the head pressure is low refer to “Freeze Cycle
Discharge Pressure Low Checklist” on page 144
8. Freeze cycle Suction Pressure normal?
Refer to “Analyzing Suction Pressure” on page 145 if
suction pressure is high or low.
9. Harvest cycle suction and discharge pressures are
lower than indicated in the cycle times/refrigerant
pressures/24 hour ice production chart?
10. Replace Harvest Pressure Regulating solenoid.
Part Number STH025 11/16
203
WATER REGULATING VALVE
Water-Cooled Models Only
FUNCTION
The water regulating valve maintains the freeze cycle
discharge pressure.
CHECK PROCEDURE
1. Determine if the head pressure is high or low (refer
to cycle time/24 hour ice production and operational
pressure chart for the model you are servicing).
2. Verify the condenser water meets specifications.
3. Adjust valve to increase or decrease discharge
pressure.
4. Determine the temperature of the liquid line
entering the receiver by feeling it. This line is
normally warm; body temperature.
5. Using the information gathered, refer to the list for
diagnosis.
Problem (Freeze Cycle)
Valve not maintaining discharge pressure.
• Valve incorrectly set, dirty or defective. Adjust, clean
or replace valve.
Discharge pressure extremely high; Liquid line entering
receiver feels hot.
• Water regulating valve incorrectly set or not opening.
Discharge pressure low, Liquid line entering receiver
feels warm to hot.
• Ice machine low on charge. Verify “Total System
Refrigerant Charge” on page 222.
204
Part Number STH025 11/16
Refrigerant Recovery/Evacuation
SELF-CONTAINED MODEL PROCEDURE
Do not purge refrigerant to the atmosphere. Capture
refrigerant using recovery equipment. Follow the
manufacturer’s recommendations.
Importan
Manitowoc assumes no responsibility for the use
of contaminated refrigerant. Damage resulting
from the use of contaminated refrigerant is the sole
responsibility of the servicing company.
Importan
Replace the liquid line drier after recovering the
refrigerant and before evacuating and recharging.
Use only a Manitowoc (OEM) liquid line filter-drier to
prevent voiding the warranty.
Connections
Manifold gauge sets must utilize low loss fittings to
comply with U.S. Government rules and regulations.
Make these connections:
•
Suction side of the compressor through the suction
service valve.
•
Discharge side of the compressor through the
discharge service valve.
Part Number STH025 11/16
205
Self-Contained Recovery/Evacuation
1. Press the power button and cycle the ice machine
off.
2. Install manifold gauges, scale and recovery unit or
two-stage vacuum pump and open high and low
side on manifold gauges.
MANIFOLD SET
OPEN
OPEN
LOW SIDE
ACCESS
VALVE
HIGH SIDE
ACCESS
VALVE
VACUUM PUMP/
RECOVERY UNIT
OPEN
CLOSED
RECOVERY/EVACUATION CONNECTIONS
3. Perform recovery or evacuation:
A. Recovery: Operate the recovery unit as directed
by the manufacturer’s instructions.
B.
Evacuation prior to recharging: Pull the system
down to 500 microns. Then, allow the pump
to run for an additional half hour. Turn off the
pump and perform a standing vacuum leak
check.
4. Follow the Charging Procedures.
206
Part Number STH025 11/16
Self-Contained Charging Procedures
Importan
The charge is critical on all Manitowoc ice machines.
Use a scale to ensure the proper charge is installed.
1. Be sure the ice machine is off.
MANIFOLD SET
CLOSED
LOW SIDE
ACCESS
VALVE
OPEN
HIGH SIDE
ACCESS
VALVE
REFRIGERANT
CYLINDER
VACUUM PUMP/
RECOVERY UNIT
CLOSED
SCALE
OPEN
CHARGING CONNECTIONS
Part Number STH025 11/16
207
2. Close the vacuum pump valve, the low side service
valve, and the low side manifold gauge valve.
3. Open the high side manifold gauge valve.
4. Open the charging cylinder and add the proper
refrigerant charge (shown on nameplate) through
the discharge service valve.
5. Let the system “settle” for 2 to 3 minutes.
6. Close the high side on the manifold gauge set.
7. Press the power button.
8. Add any remaining refrigerant through the suction
service valve (if necessary).
NOTE: Manifold gauges must be removed properly to
ensure that no refrigerant contamination or loss occurs.
9. Make sure that all of the vapor in the charging hoses
is drawn into the ice machine before disconnecting
the charging hoses.
A. Run the ice machine in freeze cycle.
B.
Remove the high side low loss fitting from the
access valve.
C.
Open the high and low side valves on the
manifold gauge set. Any refrigerant in the lines
will be pulled into the low side of the system.
D. Allow the pressures to equalize while the ice
machine is in the freeze cycle.
E.
208
Remove the hoses from the ice machine and
install the caps.
Part Number STH025 11/16
REMOTE CONDENSER MODEL PROCEDURE
Refrigerant Recovery/Evacuation
Do not purge refrigerant to the atmosphere. Capture
refrigerant using recovery equipment. Follow the
manufacturer’s recommendations.
Importan
Manitowoc Ice assumes no responsibility for the
use of contaminated refrigerant. Damage resulting
from the use of contaminated refrigerant is the sole
responsibility of the servicing company.
Importan
Replace the liquid line drier after recovering the
refrigerant and before evacuating and recharging.
Use only a Manitowoc (O.E.M.) liquid line filter drier to
prevent voiding the warranty.
Part Number STH025 11/16
209
CONNECTIONS
Importan
Recovery/evacuation of a remote system requires
connections at four points for complete system
evacuation.
Make these connections:
•
Suction side of the compressor through the suction
service valve.
•
Discharge side of the compressor through the
discharge service valve.
•
Receiver outlet service valve, which evacuates the
area between the check valve in the liquid line and
the liquid line solenoid.
•
Access (Schraeder) valve on the discharge line
quick-connect fitting, located on the outside of
the compressor/evaporator compartment. This
connection evacuates the condenser. Without it,
the magnetic check valves would close when the
pressure drops during evacuation, preventing
complete evacuation of the condenser.
NOTE: Manitowoc recommends using an access valve
core removal and installation tool on the discharge line
quick-connect fitting. This permits access valve core
removal. This allows for faster evacuation and charging,
without removing the manifold gauge hose.
210
Part Number STH025 11/16
REMOTE CONDENSER RECOVERY/EVACUATION
1. Press the power button to stop the ice machine.
2. Install manifold gauges, scale and recovery unit or
two-stage vacuum pump.
3. Open high and low side on the manifold gauge set.
4. Perform recovery or evacuation:
A. Recovery: Operate the recovery unit as directed
by the manufacturer’s instructions.
B.
Evacuation prior to recharging: Pull the system
down to 500 microns. Then, allow the pump to
run for an additional hour. Turn off the pump
and perform a standing vacuum leak check.
NOTE: Check for leaks with an electronic leak detector
after charging the ice machine.
5. Follow the Charging Procedures.
Part Number STH025 11/16
211
ACCESS
REMOTE RECOVERY/EVACUATION CONNECTIONS
212
Part Number STH025 11/16
Remote Charging Procedures
1. Close the vacuum pump valve and the low side
manifold gauge valve.
2. Open the refrigerant cylinder and add the proper
refrigerant charge (shown on nameplate) into the
system high side (receiver outlet valve and discharge
lines quick-connect fitting).
3. If the high side does not take the entire charge,
close the high side on the manifold gauge set and
start the ice machine. Add the remaining refrigerant
through the low side (in vapor form) until the
machine is fully charged.
NOTE: If an access valve core removal and installation tool
is used on any of the Schrader valves, reinstall the cores
before disconnecting the access tool and hose.
4. Remove the high side low loss fitting from the access
valve.
5. Open the high and low side valves on the manifold
gauge set. Any refrigerant in the lines will be pulled
into the low side of the system.
6. Allow the pressures to equalize while the ice
machine is in the freeze cycle.
7. Remove the low side hose from the access valve and
install the caps.
Part Number STH025 11/16
213
EVAPORATOR
HEAT EXCHANGER
EXPANSION
VALVE
x
SOLENOID
VALVE
LOW SIDE
ACCESS VALVE
STRAINER
COMPRESSOR
x
HARVEST
PRESSURE
SOLENOID
VALVE
CHECK
VALVE
x
HARVEST
PRESSURE
REGULATING
VALVE
HIGH SIDE
ACCESS VALVE
LIQUID
LINE
SOLENOID
DISCHARGE LINE
QUICK CONNECT
SCHRAEDER FITTING
DRIER
REMOTE CONDENSER
RECEIVER
ACCESS VALVE
B
CHECK VALVE
R
C
HEAD PRESSURE
CONTROL VALVE
MANIFOLD SET
TEE
CLOSED
OPEN
CLOSED
SCALE
VACUUM PUMP/
RECOVERY UNIT
OPEN
REMOTE CHARGING CONNECTIONS
214
Part Number STH025 11/16
System Contamination Clean-Up
General
This section describes the basic requirements for
restoring contaminated systems to reliable service.
Importan
Manitowoc Ice assumes no responsibility for the
use of contaminated refrigerant. Damage resulting
from the use of contaminated refrigerant is the sole
responsibility of the servicing company.
DETERMINING SEVERITY OF CONTAMINATION
System contamination is generally caused by either
moisture or residue from compressor burnout entering
the refrigeration system.
Inspection of the refrigerant usually provides the first
indication of system contamination. Obvious moisture or
an acrid odor in the refrigerant indicates contamination.
If either condition is found, or if contamination is
suspected, use a Total Test Kit from Totaline or a similar
diagnostic tool. These devices sample refrigerant,
eliminating the need to take an oil sample. Follow the
manufacturer’s directions.
If a refrigerant test kit indicates harmful levels of
contamination, or if a test kit is not available, inspect the
compressor oil.
1. Remove the refrigerant charge from the ice machine.
2. Remove the compressor from the system.
3. Check the odor and appearance of the oil.
4. Inspect open suction and discharge lines at the
compressor for burnout deposits.
5. If no signs of contamination are present, perform an
acid oil test.
Check the chart on the next page to determine the type
of cleanup required.
Part Number STH025 11/16
215
Contamination Cleanup Chart
Symptoms/Findings
Required Cleanup Procedure
No symptoms or suspicion of Normal evacuation/recharging
contamination
procedure
Moisture/Air Contamination
symptoms
Refrigeration system open to
atmosphere for longer than
15 minutes
Refrigeration test kit and/
Mild contamination cleanup
or acid oil test shows
procedure
contamination
Leak in water cooled
condenser
No burnout deposits in open
compressor lines
Mild Compressor Burnout
symptoms
Oil appears clean but smells
acrid
Mild contamination cleanup
Refrigeration test kit or acid
procedure
oil test shows harmful acid
content
No burnout deposits in open
compressor lines
Severe Compressor Burnout
symptoms
Oil is discolored, acidic, and
Severe contamination cleanup
smells acrid
procedure
Burnout deposits found in the
compressor, lines, and other
components
216
Part Number STH025 11/16
CLEANUP PROCEDURE
Mild System Contamination
1. Replace any failed components.
2. If the compressor is good, change the oil.
3. Replace the liquid line drier.
NOTE: If the contamination is from moisture, use
heat lamps during evacuation. Position them at
the compressor, condenser and evaporator prior to
evacuation. Do not position heat lamps too close to
plastic components, or they may melt or warp.
Importan
Dry nitrogen is recommended for this procedure. This
will prevent CFC release.
4. Follow the normal evacuation procedure, except
replace the evacuation step with the following:
A. Pull vacuum to 1000 microns. Break the
vacuum with dry nitrogen and sweep the
system. Pressurize to a minimum of 5 psig
(35 kPa,.35 bar).
B.
Pull vacuum to 500 microns. Break the
vacuum with dry nitrogen and sweep the
system. Pressurize to a minimum of 5 psig
(35 kPa,.35 bar).
C.
Change the vacuum pump oil.
D. Pull vacuum to 500 microns. Run the vacuum
pump for 1/2 hour on self-contained models,
1 hour on remotes.
NOTE: You may perform a standing vacuum test to make
a preliminary leak check. You should use an electronic
leak detector after system charging to be sure there are
no leaks.
5. Charge the system with the proper refrigerant to the
nameplate charge.
6. Operate the ice machine.
Part Number STH025 11/16
217
Severe System Contamination
1. Remove the refrigerant charge.
2. Remove the compressor and inspect the
refrigeration lines. If burnout deposits are found,
install a new harvest valve, replace the manifold
strainer, TXV and harvest pressure regulating valve.
3. Wipe away any burnout deposits from suction and
discharge lines at compressor.
4. Sweep through the open system with dry nitrogen.
Importan
Refrigerant sweeps are not recommended, as they
release CFCs into the atmosphere.
5. Install a new compressor and new start components.
6. Install a suction line filter-drier with acid and
moisture removal capability. Place the filter drier as
close to the compressor as possible.
7. Install an access valve at the inlet of the suction line
drier.
8. Install a new liquid line drier.
Importan
Dry nitrogen is recommended for this procedure. This
will prevent CFC release.
218
Part Number STH025 11/16
9. Follow the normal evacuation procedure, except
replace the evacuation step with the following:
A. Pull vacuum to 1000 microns. Break the
vacuum with dry nitrogen and sweep the
system. Pressurize to a minimum of 5 psig
(35 kPa,.35 bar).
B.
Change the vacuum pump oil.
C.
Pull vacuum to 500 microns. Break the
vacuum with dry nitrogen and sweep the
system. Pressurize to a minimum of 5 psig
(35 kPa,.35 bar).
D. Change the vacuum pump oil.
E.
Pull vacuum to 500 microns. Run the vacuum
pump for 1/2 hour on self-contained models, 1
hour on remotes.
NOTE: You may perform a standing vacuum test to make
a preliminary leak check. You should use an electronic
leak detector after system charging to be sure there are
no leaks.
10. Charge the system with the proper refrigerant to the
nameplate charge.
11. Operate the ice machine for one hour. Then, check
the pressure drop across the suction line filter-drier.
A. If the pressure drop is less than 1 psig
(7 kPa,.7 bar), the filter-drier should be adequate
for complete cleanup.
B.
If the pressure drop exceeds 1 psig (7 kPa,.7 bar),
change the suction line filter-drier and the
liquid line drier. Repeat until the pressure drop
is acceptable.
12. Operate the ice machine for 48-72 hours. Then
remove the suction line drier and change the liquid
line drier.
13. Follow normal evacuation procedures.
Part Number STH025 11/16
219
REPLACING PRESSURE CONTROLS WITHOUT
REMOVING REFRIGERANT CHARGE
This procedure reduces repair time and cost. Use it when
any of the following components require replacement,
and the refrigeration system is operational and leak-free.
•
Fan cycle control (air cooled only)
•
Water regulating valve (water cooled only)
•
High pressure cut-out control
•
Low Pressure cut-out control
•
High side service valve
•
Low side service valve
Importan
This is a required in-warranty repair procedure.
1. Disconnect power to the ice machine.
2. Follow all manufacturer’s instructions supplied
with the pinch-off tool. Position the pinch-off tool
around the tubing as far from the pressure control as
feasible. (See the figure on next page.) Clamp down
on the tubing until the pinch-off is complete.
nWarning
Do not unsolder a defective component. Cut it out
of the system. Do not remove the pinch-off tool until
the new component is securely in place.
3. Cut the tubing of the defective component with a
small tubing cutter.
4. Solder the replacement component in place. Allow
the solder joint to cool.
5. Remove the pinch-off tool.
6. Re-round the tubing. Position the flattened tubing
in the proper hole in the pinch-off tool. Tighten the
wing nuts until the block is tight and the tubing is
rounded.
220
Part Number STH025 11/16
NOTE: The pressure controls will operate normally once
the tubing is re-rounded. Tubing may not re-round 100%.
USING PINCH-OFF TOOL
LIQUID LINE FILTER-DRIERS
The filter-driers used on Manitowoc ice machines are
manufactured to Manitowoc specifications.
The difference between a Manitowoc drier and an
off-the-shelf drier is in filtration. A Manitowoc drier has
dirt-retaining filtration, with fiberglass filters on both the
inlet and outlet ends. This is very important because ice
machines have a back-flushing action that takes place
during every Harvest cycle.
A Manitowoc filter-drier has high moisture and acid
removal capability.
The size of the filter-drier is important. The refrigerant
charge is critical. Using an improperly sized filter-drier
will cause the ice machine to be improperly charged with
refrigerant.
Importan
Driers are covered as a warranty part. The drier must
be replaced any time the system is opened for repairs.
Part Number STH025 11/16
221
222
Part Number STH025 11/16
TOTAL SYSTEM REFRIGERANT CHARGE
Air Cooled
15 oz.
20 oz.
20 oz.
24 oz.
22 oz.
32 oz.
32 oz
34 oz.
34 oz.
36 oz.
46 oz.
Model
I0300
I0320
I0450
I0500
I0520
I0600
I0606
I0850
I0906
I1000
I1106
30 oz.
28 oz.
26 oz.
26 oz.
26 oz
28 oz.
14 oz.
23 oz.
14 oz.
18 oz.
12 oz.
Water Cooled
6.5 lb.
7 lb.
6.5 lb.
8.5 lb.
7 lb.
6.5 lb.
NA
6 lb.
NA
NA
NA
Remote
2 lb.
2 lb.
2 lb.
2 lb.
2 lb.
1.5 lb.
NA
1.5 lb.
NA
NA
Additional
Refrigerant for Line
Sets 51'-100'
NA
9.5 lb.
9 lb.
9.5 lb.
10.5 lb.
9 lb
7.5 lb.
NA
7.5 lb.
NA
NA
NA
Maximum System
Charge
All machines listed use R-404A refrigerant - This information is for reference only. Refer to the ice machine serial number
tag to verify the system charge. Serial plate information overrides information listed on these pages.
Part Number STH025 11/16
223
Air Cooled
42 oz.
52 oz.
58 oz.
52 oz.
Model
I1200
I1400
I1406
I1800
40 oz.
40 oz.
40 oz.
34 oz.
Water Cooled
12.5 lb.
12 lb.
11 lb.
NA
Remote
2 lb.
2 lb.
2 lb.
Additional
Refrigerant for Line
Sets 51'-100'
NA
14.5 lb.
14 lb.
13 lb.
NA
Maximum System
Charge
THIS PAGE INTENTIONALLY LEFT BLANK
224
Part Number STH025 11/16
Charts
Cycle Times/24-Hour Ice Production/
Refrigerant Pressure Charts
These charts are used as guidelines to verify correct ice
machine operation.
Accurate collection of data is essential to obtain the
correct diagnosis.
•
Production and cycle times are for dice cube - Half
dice cube cycle times can be 2 - 3 minutes faster,
depending on model and ambient temperature.
Models ending in 6 (ie: ID0606A) are included in the
model series cycle times & pressures.
•
Regular cube production derate is 7%.
•
Ice production checks that are within 10% of the
chart are considered normal. This is due to variances
in water and air temperature. Actual temperatures
will seldom match the chart exactly.
•
Refer to “Symptom #2 - Operational Analysis Table”
page 125 for the list of data that must be collected for
refrigeration diagnostics.
•
Zero out manifold gauge set before obtaining
pressure readings to avoid misdiagnosis.
•
Discharge and suction pressure are highest at the
beginning of the cycle. Suction pressure will drop
throughout the cycle. Verify the pressures are within
the range indicated.
•
Record beginning of freeze cycle suction pressure
one minute after water pump energizes.
•
50Hz dice and half dice production derate is 12%.
•
50Hz regular cube total production derate is 14%.
Part Number STH025 11/16
225
I0300 SERIES
I0300A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
9.6-11.5
10.6-12.6
11.8-14.0
13.2-15.7
15.0-17.7
70/21
10.8-12.9
12.3-14.6
13.9-16.4
14.6-17.3
15.8-18.7
90/32
12.3-14.6
13.5-16.0
15.0-17.7
16.2-19.2
17.7-20.9
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
310
280
250
285
250
230
260
225
210
235
215
195
210
200
180
1 Based on average ice slab weight of 2.40 - 2.80 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
195-245
50-20
70/21
195-260
50-20
80/27
220-290
60-24
90/32
240-320
60-25
100/38
285-370
70-28
110/43
330-415
78-32
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
135-160
75-100
135-165
80-110
150-170
90-120
170-195
115-135
200-220
130-155
230-250
150-175
1 Suction pressure drops gradually throughout the freeze cycle
226
Part Number STH025 11/16
I0300W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
10.0-11.9
10.2-12.2
10.4-12.4
10.6-12.6
10.8-12.9
70/21
11.1-13.2
11.3-13.4
11.8-14.0
11.8-14.0
11.8-14.0
90/32
12.3-14.6
12.3-14.6
12.6-15.0
12.6-15.7
12.9-15.3
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
300
275
250
295
270
250
290
260
245
285
260
245
280
260
240
1 Based on average ice slab weight of 2.40 - 2.80 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-230
50-25
70/21
220-230
50-28
80/27
225-245
65-29
90/32
230-250
65-30
100/38
230-260
70-31
110/43
235-260
70-31
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-170
75-100
130-170
85-100
130-180
85-110
135-180
85-115
145-190
90-120
150-190
90-120
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 220 psig
3 Condenser Water Usage = 193 gal/100 lb ice @ 90°/70°F
Part Number STH025 11/16
227
I0320 SERIES
I0320A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
Freeze Time
Water Temperature °F/°C
50/10
13.1-15.2
15.7-18.2
18.1-21.0
21.3-24.6
70/21
15.7-18.2
17.3-20.1
20.3-23.5
23.0-26.6
90/32
16.6-19.3
18.9-21.9
21.3-24.6
24.3-28.1
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
Water Temperature °F/°C 1
50/10
70/21
90/32
335
285
270
285
260
240
250
225
215
215
200
190
1 Based on average ice slab weight of 3.40 - 3.90 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
195-260
60-34
70/21
195-260
70-36
80/27
215-295
75-36
90/32
240-320
80-38
100/38
290-365
90-40
110/43
325-415
95-42
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-160
80-115
130-165
90-120
140-165
110-125
155-180
120-135
175-215
140-165
200-230
160-185
1 Suction pressure drops gradually throughout the freeze cycle
228
Part Number STH025 11/16
I0320W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
13.3-15.5
13.8-16.1
14.3-16.6
14.8-17.2
15.4-17.9
70/21
15.4-17.9
16.0-18.6
16.6-19.3
17.3-20.1
18.1-21.0
90/32
16.6-19.3
17.3-20.1
18.1-21.0
18.9-21.9
19.5-22.9
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
330
290
270
320
280
260
310
270
250
300
260
240
290
250
230
1 Based on average ice slab weight of 3.40 - 3.90 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-245
60-33
70/21
220-250
60-34
80/27
235-265
75-38
90/32
250-300
80-40
100/38
250-360
85-41
110/43
250-380
90-42
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
140-185
85-105
140-190
90-120
145-195
90-145
145-200
100-145
175-225
110-150
200-240
120-160
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 220 psig
3 Condenser Water Usage = 193 gal/100 lb ice @ 90°/70°F
Part Number STH025 11/16
229
I0450 SERIES
I0450A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
10.2-11.9
11.4-13.3
12.5-14.5
13.8-16.1
16.3-18.9
70/21
11.1-12.9
12.3-14.3
13.8-16.1
15.4-17.9
17.7-20.5
90/32
12.1-14.1
13.3-15.5
14.8-17.2
16.6-19.3
19.3-22.4
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
420
390
360
380
355
330
350
320
300
320
290
270
275
255
235
1 Based on average ice slab weight of 3.40 - 3.90 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
195-255
50-25
70/21
195-255
60-25
80/27
220-275
62-28
90/32
250-320
70-31
100/38
290-370
75-33
110/43
310-380
80-33
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
125-185
70-90
135-190
80-110
135-195
80-110
175-195
85-115
190-215
115-140
210-250
120-170
1 Suction pressure drops gradually throughout the freeze cycle
230
Part Number STH025 11/16
I0450W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
9.9-11.6
10.2-11.9
10.3-12.0
10.4-12.2
10.7-12.5
70/21
11.1-12.9
11.6-13.5
12.1-14.1
12.5-14.5
12.9-15.0
90/32
12.1-14.1
12.5-14.5
12.9-15.0
13.3-15.5
14.3-16.6
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
430
390
360
420
375
350
415
360
340
410
350
330
400
340
310
1 Based on average ice slab weight of 3.40 - 3.90 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-230
48-28
70/21
220-240
52-28
80/27
230-240
55-29
90/32
220-240
55-30
100/38
235-240
60-30
110/43
240-240
60-30
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-160
70-95
130-160
75-100
130-160
75-110
135-160
80-115
170-205
80-120
140-205
80-120
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 220 psig
3 Condenser Water Usage = 169 gal/100 lb ice @ 90°/70°F
Part Number STH025 11/16
231
I0500 SERIES
I0500A Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
11.0-12.6
12.4-14.3
14.5-16.5
16.2-18.5
18.6-21.2
70/21
12.9-14.8
14.9-17.0
15.5-17.7
17.7-20.2
20.2-22.1
90/32
14.3-16.3
15.1-17.2
17.4-19.9
19.9-22.7
22.2-25.2
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
530
460
420
475
405
400
415
390
350
375
345
310
330
305
280
1 Based on average ice slab weight of 4.60 - 5.20 lb.
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
200-240
50-28
70/21
205-245
70-30
80/27
210-270
70-31
90/32
270-325
70-32
100/38
300-400
90-34
110/43
330-425
90-36
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
120-145
70-100
120-150
80-110
120-165
80-110
120-190
100-120
210-230
130-150
220-240
140-160
1 Suction pressure drops gradually throughout the freeze cycle
232
Part Number STH025 11/16
I0500W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
10.5-12.1
11.9-13.6
12.3-14.1
12.6-14.4
12.9-14.8
70/21
13.2-15.1
13.7-15.7
13.9-15.9
14.3-16.3
14.5-16.5
90/32
15.3-17.5
15.5-17.7
15.7-17.9
16.2-18.5
16.6-19.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
550
450
395
495
435
390
480
430
385
470
420
375
460
415
365
1 Based on average ice slab weight of 4.60 - 5.20 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
70/21
230-240
60-33
80/27
230-240
65-33
90/32
230-250
70-33
100/38
235-250
75-33
110/43
235-250
75-33
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-150
95-120
130-160
95-120
170-190
95-120
170-190
95-120
170-190
95-120
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 230 psig
3 Condenser Water Usage = 165 gal/100 lb ice @ 90°/70°F
Part Number STH025 11/16
233
I0500N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
-20/-29 to
70/21
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
70/21
90/32
12.3-14.1
12.7-14.7
13.7-15.8
12.4-14.3
12.8-14.9
13.3-15.4
13.9-15.9
14.1-16.3
14.5-16.7
14.7-17.0
15.2-17.7
16.0-18.5
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
-20/-29 to 70/21
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
480
445
415
455
430
390
440
405
375
425
395
360
1 Based on average ice slab weight of 4.60 - 5.20 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
205-220
50-32
70/21
240-260
60-32
80/27
240-270
60-32
90/32
250-270
60-32
100/38
300-375
85-35
110/43
310-375
90-36
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
100-150
75-100
110-160
75-100
110-160
75-100
120-160
80-100
130-170
80-100
130-170
80-100
1 Suction pressure drops gradually throughout the freeze cycle
234
Part Number STH025 11/16
I0520 SERIES
I0520A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
8.8-10.3
9.9-11.6
10.7-12.5
12.5-14.5
15.4-17.9
70/21
10.2-11.9
11.4-13.3
13.6-15.8
14.8-17.2
16.6-19.3
90/32
11.7-13.7
13.8-16.1
15.4-17.9
16.6-19.3
18.1-21.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
475
420
370
430
380
320
400
325
290
350
300
270
290
270
250
1 Based on average ice slab weight of 3.40 - 3.90 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
195-255
50-30
70/21
195-270
60-30
80/27
220-285
62-32
90/32
250-320
70-34
100/38
290-390
75-35
110/43
320-400
80-37
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
125-185
70-90
135-190
80-115
135-195
80-115
175-195
85-115
190-215
115-140
225-250
130-170
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
235
I0520W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
9.1-10.7
9.4-11.0
9.6-11.3
9.9-11.6
10.2-11.9
70/21
10.9-12.7
11.2-13.1
11.6-13.5
11.9-13.9
12.3-14.3
90/32
11.7-13.7
12.1-14.1
12.5-14.5
12.9-15.0
13.3-15.5
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
460
395
370
450
385
360
440
375
350
430
365
340
420
355
330
1 Based on average ice slab weight of 3.4 - 3.9 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
70/21
230-250
52-30
80/27
225-265
56-30
90/32
225-270
62-31
100/38
225-275
65-32
110/43
235-280
65-32
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
160-190
85-100
170-190
90-110
170-195
95-115
170-205
100-102
170-205
100-120
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 220 psig
3 Condenser Water Usage = 190 gal/100 lb ice @ 90°/70°F
236
Part Number STH025 11/16
I0600 SERIES
I0600A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
Freeze Time
Water Temperature °F/°C
50/10
7.6-9.0
8.8-10.4
9.7-11.4
11.1-13.1
70/21
9.5-11.2
9.9-11.7
11.0-12.9
12.3-14.4
90/32
10.2-12.0
10.5-12.3
11.4-13.4
12.8-15.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
Water Temperature °F/°C 1
50/10
70/21
90/32
650
540
505
575
520
495
530
475
460
470
430
415
1 Based on average ice slab weight of 4.12 - 4.75 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-255
45-27
70/21
220-270
45-28
80/27
230-300
50-30
90/32
265-345
54-32
100/38
300-395
60-35
110/43
340-430
65-39
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
140-160
60-80
145-170
70-90
165-185
75-95
180-215
80-105
210-245
85-120
240-280
100-140
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
237
I0600W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
Freeze Time
Water Temperature °F/°C
50/10
7.6-9.0
8.8-10.4
9.6-10.6
9.1-10.7
70/21
9.0-10.6
9.1-10.7
9.1-10.7
9.5-11.2
90/32
9.7-11.4
9.9-11.7
9.9-11.7
10.2-12.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
Water Temperature °F/°C 1
50/10
70/21
90/32
650
565
530
575
560
520
565
560
520
560
540
505
1 Based on average ice slab weight of 4.12 - 4.75 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
240-250
36-26
70/21
240-250
36-26
80/27
240-250
40-28
90/32
245-255
40-29
100/38
245-260
40-30
110/43
245-265
40-30
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
140-190
65-95
140-190
65-95
150-195
70-100
160-200
70-100
170-205
75-105
180-210
80-110
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 240 psig
3 Condenser Water Usage = 157 gal/100 lb ice @ 90°/70°F
238
Part Number STH025 11/16
I0600N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
-20/-29 to
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
70/21
90/32
7.9-9.4
9.9-11.7
10.5-12.3
9.0-10.6
9.1-10.7
9.9-11.7
10.9-12.8
9.9-11.7
9.9-11.7
10.9-12.8
12.0-14.0
10.7-12.6
10.7-12.6
11.7-13.7
12.8-15.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
-20/-29 to 70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
630
520
495
565
520
485
560
520
485
520
480
450
480
440
415
1 Based on average ice slab weight of 4.12 - 4.75 lb.
2 Ratings with JC0895 condenser dice cubes
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
-20/-29 to
210-240
40-29
50/10
70/21
225-250
50-30
80/27
245-275
52-31
90/32
245-285
52-32
100/38
260-315
55-32
110/43
290-365
60-34
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-190
62-80
130-200
130-200
135-200
140-200
170-200
75-95
75-100
80-100
80-100
85-100
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
239
I0606A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
Freeze Time
Water Temperature °F/°C
50/10
7.6-9.0
8.8-10.4
9.7-11.4
11.1-13.1
70/21
9.5-11.2
9.9-11.7
11.0-12.9
12.3-14.4
90/32
10.2-12.0
10.5-12.3
11.4-13.4
12.8-15.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
Water Temperature °F/°C 1
50/10
70/21
90/32
650
540
505
575
520
495
530
475
460
470
430
415
1 Based on average ice slab weight of 4.12 - 4.75 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-255
45-27
70/21
220-270
45-28
80/27
230-300
50-30
90/32
265-345
54-32
100/38
300-395
60-35
110/43
340-430
65-39
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
140-160
60-80
145-170
70-90
165-185
75-95
180-215
80-105
210-245
85-120
240-280
100-140
1 Suction pressure drops gradually throughout the freeze cycle
240
Part Number STH025 11/16
I0606W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
Freeze Time
Water Temperature °F/°C
50/10
7.6-9.0
8.8-10.4
9.6-10.6
9.1-10.7
70/21
9.0-10.6
9.1-10.7
9.1-10.7
9.5-11.2
90/32
9.7-11.4
9.9-11.7
9.9-11.7
10.2-12.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
Water Temperature °F/°C 1
50/10
70/21
90/32
650
565
530
575
560
520
565
560
520
560
540
505
1 Based on average ice slab weight of 4.12 - 4.75 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
240-250
36-26
70/21
240-250
36-26
80/27
240-250
40-28
90/32
245-255
40-29
100/38
245-260
40-30
110/43
245-265
40-30
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
140-190
65-95
140-190
65-95
150-195
70-100
160-200
70-100
170-205
75-105
180-210
80-110
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 240 psig
3 Condenser Water Usage = 157 gal/100 lb ice @ 90°/70°F
Part Number STH025 11/16
241
I0606N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
-20/-29 to
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
70/21
90/32
7.9-9.4
9.9-11.7
10.5-12.3
9.0-10.6
9.9-11.7
9.1-10.7
9.9-11.7
9.9-11.7 10.9-12.8
10.9-12.8 12.30-14.0
10.7-12.6
10.7-12.6
11.7-13.7
12.8-15.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
-20/-29 to 70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
630
520
495
565
520
485
560
520
485
520
480
450
480
440
415
1 Based on average ice slab weight of 4.12 - 4.75 lb.
2 Ratings with JC0895 condenser dice cubes
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
-20/-29 to
210-240
40-29
50/10
70/21
225-250
50-30
80/27
245-275
52-31
90/32
245-285
52-32
100/38
260-315
55-32
110/43
290-365
60-34
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-190
62-80
130-200
130-200
135-200
140-200
170-200
75-95
75-100
80-100
80-100
85-100
1 Suction pressure drops gradually throughout the freeze cycle
242
Part Number STH025 11/16
I0850 SERIES
I0850A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
9.0-10.4
10.1-11.6
11.3-13.0
12.9-14.8
14.9-17.0
70/21
9.8-11.2
10.8-12.4
12.9-14.8
13.7-15.7
15.8-18.0
90/32
10.5-12.1
11.6-13.4
12.9-14.8
14.6-16.7
16.5-18.8
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
785
735
690
715
675
630
645
575
575
575
545
515
505
480
460
1 Based on average ice slab weight of 5.75 - 6.50 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
200-255
45-25
70/21
200-255
45-26
80/27
250-275
50-28
90/32
315-260
55-30
100/38
330-385
75-34
110/43
335-400
78-35
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
125-140
70-90
125-140
75-90
130-160
80-100
160-175
90-115
200-225
130-160
200-230
130-160
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
243
I0850W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
Freeze Time
Water Temperature °F/°C
50/10
8.4-9.7
8.7-10.1
9.1-10.5
9.5-10.9
70/21
9.5-10.9
9.7-11.1
11.4-13.1
10.3-11.9
90/32
10.7-12.3
10.8-12.6
11.0-12.8
11.3-13.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
835
755
680
810
740
665
780
640
655
755
700
645
730
680
635
1 Based on average ice slab weight of 5.75 - 6.50 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
230-240
45-28
70/21
230-240
60-28
80/27
230-240
65-28
90/32
240-250
65-28
100/38
240-255
70-30
110/43
240-265
70-32
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
135-160
70-85
135-160
70-85
135-160
70-85
135-160
70-90
140-160
75-95
140-160
75-95
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 230 psig
3 Condenser Water Usage = 150 gal/100 lb ice @ 90°/70°F
244
Part Number STH025 11/16
I0850N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
-20/-29 to
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
70/21
90/32
95-11.0
11.0-12.6
12.0-13.7
10.0-11.5
11.3-13.0
12.0-13.7
12.8-14.6
10.8-12.4
12.1-13.8
13.0-14.9
13.8-15.8
11.2-12.9
13.4-15.4
14.1-16.2
14.9-17.0
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
-20/-29 to 70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
750
665
615
720
675
650
645
610
555
615
570
530
580
540
505
1 Based on average ice slab weight of 5.75 - 6.50 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
200-220
40-21
70/21
225-250
50-30
80/27
250-265
55-31
90/32
260-295
60-32
100/38
310-375
65-35
110/43
325-390
70-36
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
140-160
70-85
140-160
70-90
140-160
70-95
140-160
70-95
145-170
75-100
145-170
80-100
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
245
I0906 SERIES
I0906A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
Freeze Time
Water Temperature °F/°C
50/10
8.7-10.3
9.7-11.5
10.5-12.4
11.3-13.4
70/21
10.2-12.1
10.5-12.4
11.9-14.1
12.3-14.6
90/32
10.8-12.8
11.1-13.1
12.2-14.5
12.7-15.0
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
Water Temperature °F/°C 1
50/10
70/21
90/32
875
765
725
800
745
710
745
665
650
695
645
630
1 Based on average ice slab weight of 6.2 - 7.2 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-255
45-27
70/21
220-270
45-30
80/27
230-300
50-30
90/32
260-315
55-32
100/38
300-395
74-34
110/43
320-400
78-34
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
125-140
60-80
150-160
75-90
150-160
80-100
160-175
90-115
180-220
130-160
200-230
130-160
1 Suction pressure drops gradually throughout the freeze cycle
246
Part Number STH025 11/16
I0906W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
9.1-10.8
10.2-12.1
10.4-12.3
11.6-12.5
11.3-13.3
70/21
10.3-12.2
10.4-12.3
11.3-13.3
11.6-13.7
12.2-14.5
90/32
10.9-12.9
11.1-13.1
11.4-13.5
11.9-14.1
13.0-15.4
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
840
755
720
765
750
710
750
700
690
740
680
665
700
650
615
1 Based on average ice slab weight of 6.2 - 7.2 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
225-235
45-28
70/21
225-235
45-30
80/27
230-245
50-30
90/32
225-235
55-31
100/38
235-250
55-32
110/43
235-265
60-32
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-160
75-90
130-160
75-90
130-160
75-90
130-160
75-90
135-160
75-95
140-160
75-95
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 230 psig
3 Condenser Water Usage = 141 gal/100 lb ice @ 90°/70°F
Part Number STH025 11/16
247
I0906N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
-20/-29 to
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
70/21
90/32
9.4-11.1
10.2-12.1
11.0-12.9
9.8-11.6
10.4-12.3
10.9-12.9
11.5-13.6
10.4-12.3
10.7-12.7
11.6-13.7
12.2-14.5
11.3-13.3
11.7-13.9
12.2-14.5
13.0-15.4
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
-20/-29 to 70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
820
765
720
790
750
700
750
730
675
720
680
650
685
650
615
1 Based on average ice slab weight of 6.2 - 7.2 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
240-260
60-30
70/21
245-260
60-30
80/27
245-270
60-31
90/32
250-285
60-32
100/38
285-350
65-34
110/43
310-375
70-36
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
120-145
70-90
120-145
75-90
120-145
75-90
125-145
75-95
135-165
75-100
145-170
75-100
1 Suction pressure drops gradually throughout the freeze cycle
248
Part Number STH025 11/16
I1000 SERIES
I1000A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
7.5-9.0
8.4-10.0
9.5-11.3
10.7-12.7
12.2-14.5
70/21
8.2-9.8
9.3-11.0
10.6-12.6
11.9-14.1
13.4-15.8
90/32
8.8-10.4
9.9-11.8
11.4-13.5
12.9-15.2
14.7-17.4
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
990
920
870
900
830
780
810
735
690
730
665
620
650
600
550
1 Based on average ice slab weight of 6.2 - 7.2 lb.
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
195-255
45-26
70/21
220-275
50-27
80/27
235-290
50-28
90/32
265-330
55-30
100/38
300-360
60-35
110/43
330-415
60-37
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-145
70-90
130-145
70-90
150-165
75-95
165-185
85-110
180-210
95-120
215-235
115-145
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
249
I1000W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
7.4-8.9
7.8-9.3
7.9-9.4
8.0-9.5
70/21
8.5-10.1
8.9-10.6
9.1-10.8
8.0-10.9
90/32
9.4-11.1
9.7-11.5
9.8-11.6
9.9-11.8
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
1000
895
820
980
875
810
960
855
800
950
845
790
940
835
780
1 Based on average ice slab weight of 6.2 - 7.2 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
215-225
45-22
70/21
215-225
45-23
80/27
220-225
45-24
90/32
220-230
45-25
100/38
230-250
50-26
110/43
240-260
50-27
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
145-170
75-85
150-170
75-90
150-175
75-95
155-175
80-100
160-195
80-110
170-200
80-115
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 220 psig
3 Condenser Water Usage = 180 gal/100 lb ice @ 90°/70°F
250
Part Number STH025 11/16
I1000N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
7.7-9.2
8.5-10.1
9.5-11.3
10.7-12.7
12.2-14.5
70/21
8.6-10.3
9.5-11.3
10.6-12.6
11.6-13.8
12.7-15.0
90/32
9.5-11.3
10.4-12.3
11.4-13.5
12.4-14.7
13.6-16.1
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
960
870
800
880
800
740
800
725
680
720
670
630
640
620
580
1 Based on average ice slab weight of 6.2 - 7.2 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
200-220
35-22
70/21
220-260
40-24
80/27
245-285
45-25
90/32
250-300
50-27
100/38
285-330
60-32
110/43
300-375
60-32
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
100-165
70-85
100-170
70-90
100-170
70-95
100-170
70-95
130-180
75-100
130-190
80-100
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
251
I1106 SERIES
I1106A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
7.5-9.0
8.4-10.0
9.5-11.3
10.7-12.7
12.2-14.5
70/21
8.2-9.8
9.3-11.0
10.6-12.6
11.9-14.1
13.4-15.8
90/32
8.8-10.4
9.9-11.8
11.4-13.5
12.9-15.2
14.7-17.4
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
990
920
870
900
830
780
810
735
690
730
665
620
650
600
550
1 Based on average ice slab weight of 6.2 - 7.2 lb.
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
195-255
45-26
70/21
220-275
50-27
80/27
235-290
50-28
90/32
265-330
55-30
100/38
300-360
60-35
110/43
330-415
60-37
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
130-145
70-90
130-145
70-90
150-165
75-95
165-185
85-110
180-210
95-120
215-235
115-145
1 Suction pressure drops gradually throughout the freeze cycle
252
Part Number STH025 11/16
I1106W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
7.4-8.9
7.8-9.3
7.9-9.4
8.0-9.5
70/21
8.5-10.1
8.9-10.6
9.1-10.8
8.0-10.9
90/32
9.4-11.1
9.7-11.5
9.8-11.6
9.9-11.8
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
1000
895
820
980
875
810
960
855
800
950
845
790
940
835
780
1 Based on average ice slab weight of 6.2 - 7.2 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
215-225
45-22
70/21
215-225
45-23
80/27
220-225
45-24
90/32
220-230
45-25
100/38
230-250
50-26
110/43
240-260
50-27
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
145-170
75-85
150-170
75-90
150-175
75-95
155-175
80-100
160-195
80-110
170-200
80-115
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 220 psig
3 Condenser Water Usage = 180 gal/100 lb ice @ 90°/70°F
Part Number STH025 11/16
253
I1106N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
7.7-9.2
8.5-10.1
9.5-11.3
10.7-12.7
12.2-14.5
70/21
8.6-10.3
9.5-11.3
10.6-12.6
11.6-13.8
12.7-15.0
90/32
9.5-11.3
10.4-12.3
11.4-13.5
12.4-14.7
13.6-16.1
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
960
870
800
880
800
740
800
725
680
720
670
630
640
620
580
1 Based on average ice slab weight of 6.2 - 7.2 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
200-220
35-22
70/21
220-260
40-24
80/27
245-285
45-25
90/32
250-300
50-27
100/38
285-330
60-32
110/43
300-375
60-32
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
100-165
70-85
100-170
70-90
100-170
70-95
100-170
70-95
130-180
75-100
130-190
80-100
1 Suction pressure drops gradually throughout the freeze cycle
254
Part Number STH025 11/16
I1200 SERIES
I1200A
Self-Contained Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
8.3-9.2
9.2-10.2
10.2-11.3
11.4-12.6
12.9-14.2
70/21
8.9-9.9
9.9-10.9
10.9-12.1
12.3-13.5
13.9-15.4
90/32
9.7-10.7
10.6-11.8
11.8-13.1
13.3-14.7
15.1-16.7
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
1100
1035
965
1010
950
890
925
870
810
840
785
730
750
700
650
1 Based on average ice slab weight of 7.5 - 8.2 lb.
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
195-255
40-20
70/21
220-280
50-22
80/27
240-300
50-24
90/32
265-340
55-25
100/38
310-390
60-28
110/43
340-430
60-30
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
135-155
65-85
140-180
70-90
155-180
75-95
165-200
85-100
200-215
95-110
200-240
105-125
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
255
I1200W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
7.8-8.6
8.9-9.9
9.0-10.0
9.1-10.1
9.2-10.2
70/21
8.8-9.7
10.1-11.1
10.5-11.6
10.3-12.1
11.1-12.2
90/32
10.1-11.1
11.5-12.7
11.6-12.8
11.7-12.9
11.8-13.0
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
1165
1050
935
1040
935
830
1030
900
825
1020
870
820
1010
860
815
1 Based on average ice slab weight of 7.5 - 8.2 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
225-230
40-20
70/21
225-230
42-20
80/27
230-250
44-22
90/32
240-270
45-22
100/38
240-280
50-22
110/43
240-280
50-23
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
150-175
70-85
150-185
70-90
160-190
80-95
170-195
80-105
175-205
85-110
180-215
85-115
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 220 psig
3 Condenser Water Usage = 169 gal/100 lb ice @ 90°/70°F
256
Part Number STH025 11/16
I1400 SERIES
I1400A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
8.3-9.5
9.1-10.4
9.6-11.0
10.7-12.2
12.0-13.6
70/21
9.1-10.4
9.9-11.3
11.3-12.8
12.6-14.3
14.3-16.2
90/32
10.2-11.6
11.2-12.8
12.0-13.7
13.6-15.4
14.5-16.5
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
1500
1395
1260
1395
1295
1160
1325
1155
1090
1205
1050
980
1095
935
920
1 Based on average ice slab weight of 10.25 - 11.50 lb.
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-280
40-24
70/21
220-280
40-26
80/27
240-290
50-27
90/32
260-330
50-27
100/38
300-370
54-28
110/43
330-410
60-29
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
150-180
70-90
160-180
70-90
160-180
70-90
180-200
80-100
200-220
90-115
220-250
100-130
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
257
I1400W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
8.2-9.4
8.3-9.5
8.4-9.6
8.4-9.7
8.6-9.7
70/21
9.9-11.3
10.0-11.4
10.1-11.5
10.2-11.6
10.3-11.7
90/32
10.5-12.0
10.6-12.1
10.7-12.2
10.7-12.2
10.8-12.3
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
1515
1295
1225
1505
1285
1215
1495
1275
1210
1485
1265
1205
1475
1255
1200
1 Based on average ice slab weight of 10.25 - 11.50 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-280
40-24
70/21
220-280
40-26
80/27
240-290
50-27
90/32
260-330
50-27
100/38
300-370
54-28
110/43
330-410
60-29
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
150-180
70-90
160-180
70-90
160-180
70-90
180-200
80-100
200-220
90-115
220-250
100-130
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 230 psig
3 Condenser Water Usage = 154 gal/100 lb ice @ 90°/70°F
258
Part Number STH025 11/16
I1400N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
8.8-10.1
9.0-10.2
9.2-10.5
9.9-11.3
11.1-12.6
70/21
9.9-11.3
10.1-11.5
10.6-12.1
11.6-13.2
11.8-13.4
90/32
10.9-12.3
11.0-12.5
11.4-13.0
12.6-14.3
13.7-15.6
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
1430
1290
1200
1410
1270
1180
1380
1220
1140
1290
1130
1050
1175
1110
970
1 Based on average ice slab weight of 10.25- 11.50 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
210-240
38-24
70/21
240-265
40-26
80/27
250-275
45-28
90/32
250-290
48-29
100/38
275-335
51-31
110/43
310-375
55-32
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
100-160
70-85
110-170
70-90
110-180
70-95
110-180
70-95
110-185
75-100
120-190
80-110
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
259
I1406 SERIES
I1406A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
11.0-12.6
12.4-13.3
13.2-14.6
14.0-15.5
15.6-17.3
70/21
12.1-14.0
13.3-14.7
14.0-15.5
15.2-17.1
16.5-20.0
90/32
13.2-14.6
14.3-15.2
15.1-16.9
16.6-19.3
19.3-21.4
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
1530
1400
1160
1450
1370
1295
1305
1235
1000
1235
1155
890
1105
950
795
1 Based on average ice slab weight of 10.25 - 11.50 lb.
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-280
40-24
70/21
220-280
40-26
80/27
240-290
50-27
90/32
260-330
50-27
100/38
300-370
54-28
110/43
330-410
60-29
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
150-180
70-90
160-180
70-90
160-180
70-90
180-200
80-100
200-220
90-115
220-250
100-130
1 Suction pressure drops gradually throughout the freeze cycle
260
Part Number STH025 11/16
I1406W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
11.0-12.9
11.2-13.2
11.4-13.4
11.6-13.6
11.8-13.9
70/21
12.1-14.2
12.3-14.4
12.7-15.0
12.8-15.0
12.8-15.0
90/32
13.3-14.6
13.3-14.6
13.6-16.0
13.6-16.7
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
1495
1360
1200
1485
1340
1195
1390
1325
1195
1380
1275
1170
1370
1205
1140
1 Based on average ice slab weight of 10.25 - 11.50 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
240-250
40-24
70/21
240-250
40-26
80/27
240-250
50-27
90/32
245-255
50-27
100/38
245-260
54-28
110/43
245-265
60-29
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
155-185
75-95
165-185
75-95
165-185
75-95
185-205
85-105
205-225
95-120
225-255
105-130
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 230 psig
3 Condenser Water Usage = 154 gal/100 lb ice @ 90°/70°F
Part Number STH025 11/16
261
I1406N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
12.3-14.1
12.3-14.2
12.4-14.3
12.8-14.9
13.3-15.4
70/21
12.7-14.7
12.8-14.9
13.9-15.9
14.1-16.3
14.5-16.7
90/32
13.7-15.8
14.0-16.1
14.7-17.0
15.3-17.7
16.0-18.5
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
1490
1360
1240
1435
1325
1235
1355
1295
1230
1290
1185
1100
1160
1275
1000
1 Based on average ice slab weight of 10.25- 11.50 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
205-220
50-32
70/21
225-260
60-32
80/27
240-170
60-32
90/32
250-270
60-32
100/38
300-375
85-35
110/43
310-375
90-36
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
100-150
75-100
110-160
75-100
110-160
75-100
120-160
80-100
130-170
80-100
130-170
80-100
1 Suction pressure drops gradually throughout the freeze cycle
262
Part Number STH025 11/16
I1800 SERIES
I1800A
Self-Contained Air-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
8.8-10.1
9.6-11.0
10.4-11.8
11.4-13.0
12.8-14.5
70/21
9.6-11.0
10.7-12.2
11.8-13.4
13.1-14.9
14.9-16.9
90/32
10.5-11.9
11.5-13.1
12.6-14.3
14.1-16.0
16.1-18.2
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 12
50/10
70/21
90/32
1840
1710
1590
1710
1560
1460
1600
1430
1350
1470
1300
1220
1330
1160
1080
1 Based on average ice slab weight of 13.20 - 14.80 lb.
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
220-280
40-24
70/21
220-280
40-26
80/27
240-290
50-27
90/32
260-330
50-27
100/38
300-270
54-28
110/43
330-410
60-30
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
150-180
70-90
160-180
70-90
160-180
70-90
180-200
80-100
200-220
90-115
220-250
100-130
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
263
I1800W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
8.8-10.0
8.9-10.2
9.0-10.3
9.1-10.4
9.2-10.5
70/21
9.8-11.2
10.0-11.3
10.1-11.5
10.3-11.7
10.5-11.9
90/32
11.0-12.5
11.1-12.6
11.2-12.7
11.3-12.8
11.3-12.9
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
1850
1680
1520
1820
1660
1510
1810
1640
1500
1780
1610
1490
1790
1590
1480
1 Based on average ice slab weight of 13.20 - 14.80 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Around Ice Discharge Suction
Machine
Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
230-240
45-25
70/21
220-280
40-26
80/27
230-240
45-25
90/32
240-270
50-25
100/38
240-280
55-25
110/43
240-280
55-25
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
145-165
65-80
160-180
70-90
145-165
65-80
150-190
70-90
155-190
70-90
155-190
70-90
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 230 psig
3 Condenser Water Usage = 181 gal/100 lb ice @ 90°/70°F
264
Part Number STH025 11/16
I1800N
Remote Air-Cooled Condenser Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Time
Water Temperature °F/°C
50/10
9.2-10.5
9.6-11.0
10.2-11.6
11.0-12.5
11.9-13.6
70/21
10.1-11.5
10.6-12.1
11.2-12.8
12.1-13.8
13.2-15.0
90/32
10.0-12.4
11.5-13.0
12.2-13.9
13.3-15.1
14.7-16.6
Harvest
Time 1
0.75-2.0
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
70/21
80/27
90/32
100/38
110/43
Water Temperature °F/°C 1
50/10
70/21
90/32
1775
1635
1535
1705
1565
1465
1625
1495
1385
1525
1395
1285
1415
1295
1175
1 Based on average ice slab weight of 13.20- 14.80 lb.
OPERATING PRESSURES
Air Temp
Freeze Cycle
Entering Discharge Suction
Condenser Pressure
Pressure
°F/°C
PSIG
PSIG
50/10
230-265
38-24
70/21
240-265
40-26
80/27
250-275
45-28
90/32
250-300
52-29
100/38
275-335
55-31
110/43
310-385
55-32
Harvest Cycle
Discharge Suction
Pressure
Pressure
PSIG
PSIG 1
100-160
70-85
110-170
70-90
110-180
70-95
110-180
70-95
110-185
75-100
120-190
80-110
1 Suction pressure drops gradually throughout the freeze cycle
Part Number STH025 11/16
265
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266
Part Number STH025 11/16
Diagrams
Wiring Diagrams
The following pages contain electrical wiring diagrams.
Be sure you are referring to the correct diagram for the ice
machine you are servicing.
nWarning
Always disconnect power before working on
electrical circuitry.
Some components are wired differently on energy
efficient machines. Please verify your model number
(page 19) to reference the correct diagrams.
WIRING DIAGRAM LEGEND
The following symbols are used on all of the wiring
diagrams:
*
Internal Compressor Overload
(Some models have external compressor
overloads)
**
Fan Motor Run Capacitor
(Some models do not incorporate fan motor run
capacitor)
( )
Wire Number Designation
(The number is marked at each end of the wire)
—>>— Multi-Pin Connection
(Electrical Box Side) —>>—
(Compressor Compartment Side)
Part Number STH025 11/16
267
I0300/I0450/I0500/I0520 - 1PH AIR/WATER
Self Contained Air & Water-cooled
000007346_12
268
Part Number STH025 11/16
I0320 - 1PH AIR/WATER
Self Contained Air & Water-cooled
Part Number STH025 11/16
269
I0500 - 1PH REMOTE
Remote Air-cooled
000007405_06
270
Part Number STH025 11/16
I0600/I0606/I0850/I0906/I1000/I1106/I1200 - 1PH
AIR/WATER
Self Contained Air & Water-cooled
000007604_07
Part Number STH025 11/16
271
I0600/I606/I0850/I906/I1000/I1106/I1200 - 3PH AIR/
WATER
Self Contained Air & Water-cooled
000007604_07
272
Part Number STH025 11/16
I0600/I606/I0850/I0906/I1000/I1106 - 1PH REMOTE
Remote Condenser Air-cooled
000007606_09
Part Number STH025 11/16
273
I0600/I606/I0850/I0906/I1000/I1106 - 3PH REMOTE
Remote Condenser Air-cooled
000007606_09
274
Part Number STH025 11/16
I1400/I1406/I1800 - 1PH AIR/WATER
Self Contained Air & Water-cooled
000008865_02
Part Number STH025 11/16
275
I1400/I1406/I1800 - 3PH AIR/WATER
Self Contained Air & Water-cooled
000008865_02
276
Part Number STH025 11/16
I1400/II1406/1800 1PH REMOTE
Remote Condenser
000008864_04
Part Number STH025 11/16
277
I1400/I1406/I1800 - 3PH REMOTE
Remote Condenser
000008864_04
278
Part Number STH025 11/16
I1400 ECM FAN MOTOR - 1PH AIR
Self Contained Air-cooled
000013616 Rev 03
Part Number STH025 11/16
279
I1400 ECM FAN MOTOR - 3PH AIR
Self Contained Air-cooled
000013616 Rev 03
280
Part Number STH025 11/16
ELECTRICAL NOISE FILTER
Filter is installed to the incoming line voltage power
supply on Korean models.
CONTROL BOX
L2
JUNCTION BOX
L1
L2
L1
BLK
BLK
CONTROL
BOX
RED
RED
FILTER
Part Number STH025 11/16
281
Electronic Control Board
Bin Switches
Bin
Thermostat
USB
Display Light
Micro Light
Clean Light
Harvest Light
SL-1 Light
SL-2 Light
Thermistors
T1
T2
Dump Valve
T3
T4
Transformer
Left Bin Switch Light
Right Bin Switch Light
Display
Water Level Probe Light
Ice Thickness Probe Light
RS485
RT Harvest
Bin LED
LuminIce
Water
Level
Probe
Battery
LT Harvest
Fuse
Relay Lights
V
C
LPC
HPC1
HPC2
Pump
Water Pump
AuCS
Remote CVD
Compressor
Water
Ice
Thickness
Probe
Compressor
L1
Dump
L2
Not Used
CVD
Contactor
HPC
Right Harvest Valve
Water Inlet Valve
282
Left Harvest Valve
Dump Valve
Part Number STH025 11/16
Refrigeration Tubing Schematics
SELF-CONTAINED AIR OR WATER-COOLED
I0300/I0320/I0520/I0450/I0500/I0600/I606/I0850/
I0906/I1000/I1200
T4 Thermistor
E VA P O R ATO R
H E AT
EXCHANGER
EXPANSION
VALVE
T3 Thermistor
H O T G A S S O L E N O I D VA LV E
X
COMPRESSOR
A I R O R WAT E R
CONDENSER
STRAINER
T2 Thermistor
DRIER
RECEIVER
( WAT E R C O O L E D O N LY )
T1 Thermistor
I1106
T4 Thermistor
HEAT
EXCHANGER
EXPANSION
VALVES
EVAPORATOR
T3 Thermistor
x
x
COMPRESSOR
HARVEST
SOLENOID VALVES
STRAINER
DRIER
T2 Thermistor
RECEIVER
Part Number STH025 11/16
T1 Thermistor
CONDENSER
283
II1400/I1406/I1800
T3 Thermistor
HEAT
EXCHANGER
T4 Thermistor
EXPANSION
VALVE
EXPANSION
VALVE
x
x
EVAPORATOR
HARVEST
SOLENOID VALVE
COMPRESSOR
HARVEST
SOLENOID VALVE
STRAINER
DRIER
T2 Thermistor
RECEIVER
284
T1 Thermistor
CONDENSER
Part Number STH025 11/16
REMOTE CONDENSER MODELS
I0500/I0600/I0606/I0850/I1000
T4 Thermistor
EVAPORATOR
HEAT
EXCHANGER
EXPANSION
VALVE
T3 Thermistor
STRAINER
X
COMPRESSOR
HOT GAS SOLENOID VALVE
CHECK VALVE
REMOTE
CONDENSER
T2 Thermistor
LIQUID
LINE
SOLENOID
VALVE
HARVEST PRESSURE
REGULATING VALVE
HEAD
PRESSURE
CONTROL
VALVE
X
DRIER
H.P.R. SOLENOID
VALVE
T1 Thermistor
CHECK VALVE
R
B
C
RECEIVER
ACCESS
VALVE
Part Number STH025 11/16
RECEIVER
285
I1106
T4 Thermistor
HEAT
EXCHANGER
EXPANSION
VALVES
EVAPORATOR
T3 Thermistor
x
x
x
LLSV
HARVEST
SOLENOID VALVES
STRAINER
COMPRESSOR
CHECK VALVE
DRIER
CHECK VALVE
x
HPR VALVE
T2 Thermistor
HPR SOLENOID
VALVE
T1 Thermistor
RECEIVER
ACCESS
VALVE
HEAD
PRESSURE
CONTROL
VALVE
REMOTE
CONDENSER
RECEIVER
286
Part Number STH025 11/16
I1400/I1406/I1800
T4 Thermistor
HEAT
EXCHANGER
T3 Thermistor
EXPANSION
VALVE
EXPANSION
VALVE
LLSV
x
x
EVAPORATOR
HARVEST
SOLENOID VALVE
HARVEST
SOLENOID VALVE
COMPRESSOR
STRAINER
DRIER
CHECK VALVE
x
HPR VALVE
CHECK VALVE
RECEIVER
ACCESS
VALVE
T2 Thermistor
T1 Thermistor
HEAD
PRESSURE
CONTROL
VALVE
REMOTE
CONDENSER
RECEIVER
Part Number STH025 11/16
287
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288
Part Number STH025 11/16
THIS PAGE INTENTIONALLY LEFT BLANK
Part Number STH025 11/16
289
MANITOWOC FOODSERVICE
ICE MACHINE DIVISION
2110 SOUTH 26TH STREET
MANITOWOC, WI 54220
844-724-2273
WWW.MANITOWOCICE.COM
Every new piece of Manitowoc Foodservice equipment
comes with KitchenCare® and you choose the level of
service that meets your operational needs from one restaurant to
multiple locations.
Talk with KitchenCare® • 1-844-724-CARE • www.mtwkitchencare.com
To learn how Manitowoc Foodservice
and its leading brands can
equip you, visit our web site at
www.manitowocfoodservice.com, then discover the
regional or local resources available to you.
©2015 Manitowoc Foodservice except where explicitly stated otherwise. All
rights reserved. Part Number STH025 11/16