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Manitowoc
Indigo™ Series
Air/Water/Remote Condenser
Ice Machines
Technician’s Handbook
This manual is updated as new information and models are released.
Visit our website for the latest manual. www.manitowocice.com
America’s #1 Selling Ice Machine
Part Number STH025 2/14
Safety Notices
As you work on Manitowoc 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.
Throughout this handbook, you will see the following types of safety notices:
!
Warning
Text in a Warning box alerts you to a potential personal injury situation. Be sure to read the
Warning statement before proceeding, and work carefully.
! Caution
Text in a Caution box alerts you to a situation in which you could damage the equipment. Be sure to read the Caution statement before proceeding, and work carefully.
Procedural Notices
As you work on Manitowoc equipment, be sure to read the procedural notices in this handbook. These notices supply helpful information which may assist you as you work.
Throughout this handbook, you will see the following types of procedural notices:
Important
Text in an Important box provides you with information that may help you perform a procedure more efficiently. Disregarding this information will not cause damage or injury, but it may slow you down as you work.
NOTE: Text set off as a Note provides you with simple, but useful, extra information about the procedure you are performing.
Read These Before Proceeding:
! Caution
Proper installation, care and maintenance are essential for maximum performance and troublefree operation of your Manitowoc equipment. If you encounter problems not covered by this manual, do not proceed, contact Manitowoc
Foodservice. We will be happy to provide assistance.
! Caution
Proper installation, care and maintenance are essential for maximum performance and troublefree operation of your equipment. Visit our website www.manitowocfsg.com for manual updates, translations, or contact information for service agents in your area.
Important
Routine adjustments and maintenance procedures outlined in this handbook are not covered by the warranty.
!
Warning
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.
!
Warning
Do not use electrical appliances or accessories other than those supplied by Manitowoc for your ice machine model.
!
Warning
Two or more people or a lifting device are required to lift this appliance.
!
Warning
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.
!
Warning
Do not damage the refrigeration circuit when installing, maintaining or servicing the unit.
!
Warning
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 this appliance.
!
Warning
All covers and access panels must be in place and properly secured, before operating this equipment.
!
Warning
Do not obstruct machine vents or openings.
!
Warning
Do not store gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance.
!
Warning
Do not clean with water jet.
!
Warning
It is the responsibility of the equipment owner to perform a Personal Protective Equipment Hazard
Assessment to ensure adequate protection during maintenance procedures.
!
Warning
Two or more people are required to move this equipment to prevent tipping.
!
Warning
When using electric appliances, basic precautions must always be followed, including the following: a. Read all the instructions before using the appliance.
b. To reduce the risk of injury, close supervision is necessary when an appliance is used near children.
c. Do not contact moving parts.
d. Only use attachments recommended or sold by the manufacturer.
e. Do not use outdoors.
f. For a cord-connected appliance, the following must be included:
• Do not unplug by pulling on cord. To unplug, grasp the plug, not the cord.
• Unplug from outlet when not in use and before servicing or cleaning.
• Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or is dropped or damaged in any manner. Contact the nearest authorized service facility for examination, repair, or electrical or mechanical adjustment.
g. Follow applicable lock out tag out procedures before working on equipment.
h. Connect to a properly grounded outlet only.
We reserve the right to make product improvements at any time. Specifications and design are subject to change without notice.
Table of Contents
How to Read a Model Number . . . . . . . . . 17
Head Sections . . . . . . . . . . . . . . . . . . . 17
Ice Cube Sizes . . . . . . . . . . . . . . . . . . . . . 18
Model/Serial Number Location . . . . . . . . 18
Model Numbers . . . . . . . . . . . . . . . . . . . . . 19
Air-Water-Remote Condenser Models 19
Ice Machine Warranty Information . . . . . 21
Owner Warranty Registration Card . . . 21
Commercial Warranty Coverage . . . . . 22
Residential Ice Machine Warranty . . . . 24
Ice Deflector . . . . . . . . . . . . . . . . . . . . 29
Location of Ice Machine . . . . . . . . . . . . . . 30
Clearance Requirements . . . . . . . . . . . . . 31
Air, Water, Remote Condenser Models 31
Ice Machine Heat of Rejection . . . . . . . . . 32
Installation on a Bin . . . . . . . . . . . . . . . . . 33
Ice Machine on a Dispenser Installation 33
Lineset Applications . . . . . . . . . . . . . . . . 34
Remote Condenser . . . . . . . . . . . . . . . 35
Additional Refrigerant Charge For
51’ to 100’ Line Sets . . . . . . . . . . . . . . 36
Calculating Allowable Lineset Distance 37
11
Cleaning and Sanitizing . . . . . . . . . . . . . 39
General . . . . . . . . . . . . . . . . . . . . . . . . 39
Cleaning/Sanitizing Procedure . . . . . . 41
Preventative Maintenance Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Exterior Cleaning . . . . . . . . . . . . . . . . 41
Cleaning / Sanitizing Procedure . . . . . . . 42
Cleaning Procedure . . . . . . . . . . . . . . 42
Sanitizing Procedure . . . . . . . . . . . . . 45
Parts Removal for Cleaning/Sanitizing. 48
Preventative Maintenance Cleaning Proce-
dure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Removal from Service/Winterization . . . 55
Air-Cooled Ice Machines . . . . . . . . . . 55
Water-Cooled Ice Machines . . . . . . . . 56
Control Panel Features . . . . . . . . . . . . . . 57
Buttons . . . . . . . . . . . . . . . . . . . . . . . . 57
Display Panel . . . . . . . . . . . . . . . . . . . 58
Menu Navigation Overview . . . . . . . . . . . 59
Display Panel Navigation . . . . . . . . . . . . 60
Alerts and Messages . . . . . . . . . . . . . . . . 62
Main Menu . . . . . . . . . . . . . . . . . . . . . . . . 63
Machine Info Menu . . . . . . . . . . . . . . . . . 64
Password Entry . . . . . . . . . . . . . . . . . . . . 65
Reset Password To Factory Defaults . 67
12
Set-Up Menu . . . . . . . . . . . . . . . . . . . . . . . 68
Language . . . . . . . . . . . . . . . . . . . . . . 69
Time & Date . . . . . . . . . . . . . . . . . . . . 69
Time Configuration . . . . . . . . . . . . . . . 71
Units . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Ice Clarity . . . . . . . . . . . . . . . . . . . . . . 72
LCD Brightness . . . . . . . . . . . . . . . . . . 72
Password On . . . . . . . . . . . . . . . . . . . . 73
Edit password . . . . . . . . . . . . . . . . . . . 73
Clean Minder . . . . . . . . . . . . . . . . . . . . 73
IAuCS Runtime . . . . . . . . . . . . . . . . . . 74
Air Filter . . . . . . . . . . . . . . . . . . . . . . . . 74
Water Filter . . . . . . . . . . . . . . . . . . . . . 75
LuminIce™ reminder . . . . . . . . . . . . . . 76
Ice Bin Level Sensor . . . . . . . . . . . . . . 77
USB Setup . . . . . . . . . . . . . . . . . . . . . 77
Factory Defaults . . . . . . . . . . . . . . . . . 77
Energy Saver Menu . . . . . . . . . . . . . . . . . 78
Ice Program . . . . . . . . . . . . . . . . . . . . . 79
Water Miser . . . . . . . . . . . . . . . . . . . . . 80
Statistics . . . . . . . . . . . . . . . . . . . . . . . 80
Service Menu . . . . . . . . . . . . . . . . . . . . . . 81
Data History . . . . . . . . . . . . . . . . . . . . 83
Real Time Data . . . . . . . . . . . . . . . . . . 84
Diagnostics . . . . . . . . . . . . . . . . . . . . . 86
Manual Harvest . . . . . . . . . . . . . . . . . . 87
Replace Control Board . . . . . . . . . . . . 87
USB Setup . . . . . . . . . . . . . . . . . . . . . 87
Event Log Menu . . . . . . . . . . . . . . . . . 88
Event Log . . . . . . . . . . . . . . . . . . . . . . 89
Upgrading Firmware with a Flash Drive 95
Exporting Data to a Flash Drive . . . . . 97
Operational Checks . . . . . . . . . . . . . . . . . 99
General . . . . . . . . . . . . . . . . . . . . . . . . 99
Ice Thickness Check . . . . . . . . . . . . . . 100
13
Sequence of Operation . . . . . . . . . . . . . . 101
Self Contained Air or Water Cooled . . 101
Remote Condenser . . . . . . . . . . . . . . 107
Energized Parts Chart Remote Models 110
Safety Limits . . . . . . . . . . . . . . . . . . . . . . 113
Safe Operation Mode . . . . . . . . . . . . . 113
Analyzing Why a Safety Limit Stopped the
Ice Machine . . . . . . . . . . . . . . . . . . . . 114
Safety Limit #1 . . . . . . . . . . . . . . . . . . 115
Safety Limit #2 . . . . . . . . . . . . . . . . . . 116
Troubleshooting By Symptom . . . . . . . . 117
Reset To Factory Defaults . . . . . . . . . 118
Symptom #1 Ice Machine Will Not Run 119
Symptom #2 - Low Production, Long Freeze
Cycle . . . . . . . . . . . . . . . . . . . . . . . . . 122
Symptom #2 - Freeze Cycle Refrigeration
System Operational Analysis Tables . 125
Symptom #3 & #4 Harvest Problems
Self-contained Air, Water & Remote Condenser Models . . . . . . . . . . . . . . . . . . 154
Symptom #3 Self-Contained Air or Watercooled . . . . . . . . . . . . . . . . . . . . . . . . . 155
Symptom #3 - Remote Condenser . . . 157
Symptom #4 Self-Contained Air, Watercooled or Remote . . . . . . . . . . . . . . . . 159
14
Electrical Components . . . . . . . . . . . . . . . 161
Control Board, Display board and Touch
Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Control Board Relay Test . . . . . . . . . . 164
Programming A Replacement Control Board
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Main Fuse . . . . . . . . . . . . . . . . . . . . . . 167
Bin Switch . . . . . . . . . . . . . . . . . . . . . . 168
Water Level Control Circuitry . . . . . . . 171
Ice Thickness Probe (Initiates Harvest) 177
High Pressure Cutout (HPCO) Control 182
Fan Cycle Control . . . . . . . . . . . . . . . . 185
Thermistors . . . . . . . . . . . . . . . . . . . . . 186
Harvest Assist Air Pump . . . . . . . . . . . 189
Compressor Electrical Diagnostics . . . 190
Diagnosing Start Components . . . . . . 192
Refrigeration Components . . . . . . . . . . . 195
Head Pressure Control Valve . . . . . . . 195
Harvest Pressure Regulating (HPR) System
Remote Condenser Only . . . . . . . . . . . 199
Water Regulating Valve . . . . . . . . . . . 202
Refrigerant Recovery/Evacuation . . . . . . 203
Self-Contained Model Procedure . . . . 203
Remote Condenser Model Procedure . 207
System Contamination Clean-Up . . . . . . 213
Determining Severity Of Contamination 213
Cleanup Procedure . . . . . . . . . . . . . . . 215
Replacing Pressure Controls Without Removing Refrigerant Charge . . . . . . . . . 218
Liquid Line Filter-Driers . . . . . . . . . . . . 219
Total System Refrigerant Charge . . . . 220
15
Cycle Times/24-Hour Ice Production/
Refrigerant Pressure Charts . . . . . . . . . . 223
I0300 Series . . . . . . . . . . . . . . . . . . . . 224
I0320 Series . . . . . . . . . . . . . . . . . . . . 226
I0450 Series . . . . . . . . . . . . . . . . . . . . 228
I0500 Series . . . . . . . . . . . . . . . . . . . . 230
I0520 Series . . . . . . . . . . . . . . . . . . . . 233
I0600 Series . . . . . . . . . . . . . . . . . . . . 235
I0850 Series . . . . . . . . . . . . . . . . . . . . 241
I0906 Series . . . . . . . . . . . . . . . . . . . . 244
I1000 Series . . . . . . . . . . . . . . . . . . . . 247
I1200 Series . . . . . . . . . . . . . . . . . . . . 250
I1400 Series . . . . . . . . . . . . . . . . . . . . 252
I1800 Series . . . . . . . . . . . . . . . . . . . . 255
Wiring Diagrams . . . . . . . . . . . . . . . . . . . 259
Wiring Diagram Legend . . . . . . . . . . . 259
I0300/I0450/I0500/I0520 . . . . . . . . . . 260
I0320 . . . . . . . . . . . . . . . . . . . . . . . . . 261
I0500 . . . . . . . . . . . . . . . . . . . . . . . . . 262
I0600/I0850/I1000/I1200 . . . . . . . . . . 263
I0600/I0850/I1000 . . . . . . . . . . . . . . . 264
I1400/I1800 . . . . . . . . . . . . . . . . . . . . 265
I1400/I1800 . . . . . . . . . . . . . . . . . . . . 266
Electronic Control Board . . . . . . . . . . . . 267
Refrigeration Tubing Schematics . . . . . 268
Self-Contained Air or Water -Cooled . 268
Remote Condenser Models . . . . . . . . 269
16
General Information
How to Read a Model Number
HEAD SECTIONS
17
Ice Cube Sizes
Regular
1-1/8" x 1-1/8" x 7/8"
2.86 x 2.86 x 2.22 cm
Dice
7/8" x 7/8" x 7/8"
2.22 x 2.22 x2.22 cm
Half Dice
3/8" x 1-1/8" x 7/8"
0.95 x 2.86 x 2.22 cm
!
Warning
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.
18
Model Numbers
AIR-WATER-REMOTE CONDENSER MODELS
IR0850A
ID0852A
IY0854A
IR0906A
ID0906A
IY0906A
ID1002A
IY1004A
ID1106A
IY1106A
ID1202A
IY1204A
Self-Contained
Air-Cooled
ID0302A
IY0304A
ID0306A
IY0306A
ID0322A
IY0324A
ID0452A
IY0454A
ID0456A
IY0456A
IR0500A
ID0502A
IY0504A
IR0520A
ID0522A
IY0524A
ID0602A
IY0604A
ID0606A
IY0606A
Self-Contained
Water-Cooled
ID0303W
IY0305W
ID0306W
IY0306W
ID0323W
IY0325W
D0453W
IY0455W
IID0456W
IY0456W
IR0501W
ID0503W
IY0505W
IR0521W
ID0523W
IY0525W
ID0603W
IY0605W
ID0606W
IY0606W
IR0851W
ID0853W
IY0855W
IR0906W
ID0906W
IY0906W
ID1003W
IY1005W
ID1106W
IY1106W
ID1203W
IY1205W
Remote
----
----
----
----
----
IR0590N
ID0592N
IY0594N
----
----
ID0692N
IY0694N
ID0696N
IY0696N
IR0890N
ID0892N
IY0894N
IR0996N
ID0996N
IY0996N
ID1092N
IY1094N
ID1196N
IY1196N
19
Self-Contained
Air-Cooled
ID1402A
IY1404A
Self-Contained
Water-Cooled
ID1403W
IY1405W
Remote
ID1492N
IY1494N
ID1406A
IY1406A
IR1800A
ID1802A
IY1804A
ID1406W
IY1406W
IR1801W
ID1803W
IY1805W
ID1496N
IY1496N
IR1890N
ID1892N
IY1894N
IR1806A
ID1806A
IY1806A
IR1806W
ID1806W
IY1806W
IR1896N
ID1896N
IY1896N
NOTE: Marine and Prison models have a M or P suffix -
Example ID0853WM
3 suffix at the end of the model number indicates a 3 phase unit - Example IY1004A3
20
Ice Machine Warranty Information
OWNER WARRANTY REGISTRATION CARD
Warranty coverage begins the day the ice machine is installed.
Important
Complete and mail the OWNER WARRANTY
REGISTRATION CARD as soon as possible to validate the installation date.
If the OWNER WARRANTY REGISTRATION CARD is not returned, Manitowoc will use the born on date recorded in the control board or the date of sale to the
Manitowoc Distributor as the first day of warranty coverage for your new ice machine.
21
COMMERCIAL WARRANTY COVERAGE
Manitowoc Ice, (hereinafter referred to as the
"COMPANY") warrants for a period of thirty-six months from the installation date (except as limited below) that new ice machines manufactured by the COMPANY shall be free of defects in material or workmanship under normal and proper use and maintenance as specified by the COMPANY and upon proper installation and start-up in accordance with the instruction manual supplied with the ice machine.
The COMPANY'S warranty hereunder with respect to the compressor shall apply for an additional twentyfour months, excluding all labor charges, and with respect to the evaporator for an additional twenty-four months, including labor charges.
The obligation of the COMPANY under this warranty is limited to the repair or replacement of parts, components, or assemblies that in the opinion of the
COMPANY are defective. This warranty is further limited to the cost of parts, components or assemblies and standard straight time labor charges at the servicing location. Time and hourly rate schedules, as published from time to time by the COMPANY, apply to all service procedures.
Additional expenses including without limitation, travel time, overtime premium, material cost, accessing or removal of the ice machine, or shipping are the responsibility of the owner, along with all maintenance, adjustments, cleaning, and ice purchases.
Labor covered under this warranty must be performed by a COMPANY Contracted Service Representative or a refrigeration service agency as qualified and authorized by the COMPANY'S local Distributor.
The COMPANY'S liability under this warranty shall in no event be greater than the actual purchase price paid by customer for the ice machine.
22
The foregoing warranty shall not apply to (1) any part or assembly that has been altered, modified, or changed; (2) any part or assembly that has been subjected to misuse, abuse, neglect, or accidents; (3) any ice machine that has been installed and/or maintained inconsistent with the technical instructions provided by the COMPANY; or (4) any ice machine initially installed more than five years from the serial number production date. This warranty shall not apply if the Ice Machine's refrigeration system is modified with a condenser, heat reclaim device, or parts and assemblies other than those manufactured by the
COMPANY, unless the COMPANY approves these modifications for specific locations in writing.
THIS WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES OR GUARANTEES OF ANY
KIND, EXPRESSED OR IMPLIED, INCLUDING ANY
IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE.
In no event shall the COMPANY be liable for any special, indirect, incidental or consequential damages.
Upon the expiration of the warranty period, the
COMPANY'S liability under this warranty shall terminate. The foregoing warranty shall constitute the sole liability of the COMPANY and the exclusive remedy of the customer or user.
To secure prompt and continuing warranty service, the warranty registration card must be completed and sent to the COMPANY within five (5) days from the installation date.
To obtain warranty service or information regarding your Product, please contact us at:
MANITOWOC ICE
2110 So. 26th St. P.O. Box 1720,
Manitowoc, WI 54221-1720
Telephone: 920-682-0161 Fax: 920-683-7585 www.manitowocice.com
23
RESIDENTIAL ICE MACHINE WARRANTY
WHAT DOES THIS LIMITED WARRANTY COVER?
Subject to the exclusions and limitations below,
Manitowoc Ice (“Manitowoc”) warrants to the original consumer that any new ice machine manufactured by
Manitowoc (the “Product”) shall be free of defects in material or workmanship for the warranty period outlined below under normal use and maintenance, and upon proper installation and start-up in accordance with the instruction manual supplied with the Product.
HOW LONG DOES THIS LIMITED WARRANTY
LAST?
Product Covered
Ice Machine
Warranty Period
Twelve months from the sale date
WHO IS COVERED BY THIS LIMITED WARRANTY?
This limited warranty only applies to the original consumer of the Product and is not transferable.
24
WHAT ARE MANITOWOC ICE’S OBLIGATIONS
UNDER THIS LIMITED WARRANTY?
If a defect arises and Manitowoc receives a valid warranty claim prior to the expiration of the warranty period, Manitowoc shall, at its option: (1) repair the
Product at Manitowoc’s cost, including standard straight time labor charges, (2) replace the Product with one that is new or at least as functionally equivalent as the original, or (3) refund the purchase price for the Product. Replacement parts are warranted for 90 days or the balance of the original warranty period, whichever is longer. The foregoing constitutes Manitowoc’s sole obligation and the consumer’s exclusive remedy for any breach of this limited warranty. Manitowoc’s liability under this limited warranty is limited to the purchase price of Product.
Additional expenses including, without limitation, service travel time, overtime or premium labor charges, accessing or removing the Product, or shipping are the responsibility of the consumer.
HOW TO OBTAIN WARRANTY SERVICE
To obtain warranty service or information regarding your Product, please contact us at:
MANITOWOC ICE
2110 So. 26th St.
P.O. Box 1720,
Manitowoc, WI 54221-1720
Telephone: 920-682-0161 Fax: 920-683-7585 www.manitowocice.com
25
WHAT IS NOT COVERED?
This limited warranty does not cover, and you are solely responsible for the costs of: (1) periodic or routine maintenance, (2) repair or replacement of the
Product or parts due to normal wear and tear, (3) defects or damage to the Product or parts resulting from misuse, abuse, neglect, or accidents, (4) defects or damage to the Product or parts resulting from improper or unauthorized alterations, modifications, or changes; and (5) defects or damage to any Product that has not been installed and/or maintained in accordance with the instruction manual or technical instructions provided by Manitowoc. To the extent that warranty exclusions are not permitted under some state laws, these exclusions may not apply to you.
E
XCEPT
A
S
S
TATED
I
N
T
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F
OLLOWING
S
ENTENCE
, T
HIS
L
IMITED
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ARRANTY
I
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OLE
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ARRANTY
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ANITOWOC
W
ITH
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LL
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ARRANTIES
A
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TRICTLY
L
IMITED
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URATION
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F
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IMITED
W
ARRANTY
A
PPLICABLE
T
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RODUCTS
A
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BOVE
,
I
NCLUDING
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IMITED
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ARRANTY
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O
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ITNESS
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URPOSE
.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
26
I N N O E VENT S HALL M ANITOWOC O R A NY O F I TS
A FFILIATES B E L IABLE T O T HE C ONSUMER O R A NY
O THER P ERSON F OR A NY I NCIDENTAL , C ONSEQUENTIAL
O R S PECIAL D AMAGES O F A NY K IND (I NCLUDING ,
W ITHOUT L IMITATION , L OSS O F P ROFITS , R EVENUE O R
B USINESS ) A RISING F ROM O R I N A NY M ANNER
C ONNECTED W ITH T HE P RODUCT , A NY B REACH O F T HIS
L IMITED W ARRANTY , O R A NY O THER C AUSE
W HATSOEVER , W HETHER B ASED O N C ONTRACT , T ORT
O R A NY O THER T HEORY O F L IABILITY .
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.
HOW STATE LAW APPLIES
This limited warranty gives you specific legal rights, and you may also have rights that vary from state to state or from one jurisdiction to another.
REGISTRATION CARD
To secure prompt and continuing warranty service, this warranty registration card must be completed and sent to Manitowoc within thirty (30) days from the sale date.
Complete the registration card and send it to
Manitowoc.
27
This Page Intentionally Left Blank
28
Installation
!
Warning
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” page 55.
ICE DEFLECTOR
An ice deflector is required for all ice machines installed on a bin.
29
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”
30
Clearance Requirements
AIR, WATER, REMOTE CONDENSER MODELS
I0300
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)
I0450
I0500 - I0600
I0850 - I0900
I1000 - I1100
Top/Sides
Back
Self-Contained
Air-Cooled
8" (20.3 cm)
5" (12.7 cm)
Water-Cooled and
Remote*
8" (20.3 cm)
5" (12.7 cm)
I0320 - I0520
Top/Sides
Back
Self-Contained
Air-Cooled
12" (30.5 cm)
5" (12.7 cm)
I0500 Tropical Rating 230/50/1 Air-Cooled Only
Top 24” (61 cm)
Sides/back 12” (30.5 cm)
Water-Cooled and
Remote*
8" (20.3 cm)
5" (12.7 cm)
N/A
N/A
I1200
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 - 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)
* There is no minimum clearance required for water-cooled or remote ice machines. This value is recommended for efficient operation and servicing only.
*
31
Ice Machine Heat of Rejection
Heat of Rejection
Series Ice
Machine
Air
Conditioning*
Peak
I0300
I0320
I0450
I0500
I0520
I0600
I0850
I0906
4600
3300
5400
6100
5400
9000
13000
13000
I1000
I1100
I1200
I1400
16250
16250
20700
23500
18600
18600
24500
27000
I1800 30000 35000
*BTU/Hour
Because the heat of rejection varies during the ice making cycle, the figure shown is an average.
5450
4500
6300
6900
6300
13900
16000
16000
32
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..
!
Warning
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).
.
33
Lineset Applications
! Caution
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.
!
Warning
Recovery locations vary by model. Verify you are making the correct connections for your model to prevent accidental release of high pressure refrigerant.
Important
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 preexisting (used) tubing, remote condenser, remote condensing unit or ice machine head section.
34
Remote Condenser
Ice Machine
Remote Single
Circuit
Condenser
I0590N
I0690N
I0890N
I0990N
I1090N
I1190N
I1490N
I1890N
JC0495
JC0895
JC0995
JC1395
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
*Line Set Discharge Line
RT
RL
1/2" (1.27 cm)
1/2" (1.27 cm)
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)
35
Additional Refrigerant Charge For
51’ to 100’ Line Sets
Ice
Machine
I0590N
I0690N
I0890N
I0990N
I1090N
I1190N
I1490N
I1890N
Condenser
JC0495
JC0895
JC0895
JC0895
JC0995
JC0995
JC1395
JC1395
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
36
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
SV1751
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
SV1750
15 ft. (4.5 m) Drop: The maximum distance the
Condenser or Condensing Unit can be below the ice machine.
37
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.
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
38
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.
39
! 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.
! 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.
!
Warning
Wear rubber gloves and safety goggles (and/or face shield) when handling Ice Machine Cleaner or Sanitizer.
40
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.
41
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.
!
Warning
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 dependant on your installation, removing the ice machine top cover may allow easier access.
42
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/I0850
I0906/I1000/I1100/I1200
I1400/I1800
Amount of Cleaner
3 ounces (90 ml)
5 ounces (150 ml)
9 ounces (265 ml)
43
Step 4 Wait until the clean cycle is complete
(approximately 24 minutes). Then disconnect power to the ice machine (and dispenser when used).
!
Warning
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
44
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.
45
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.
46
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/I0850
I0906/I1000/I1100/I1200
I1400/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).
47
PARTS REMOVAL FOR CLEANING/SANITIZING.
D E
A
B
C
O f f
O n / O f f M o d e
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.
48
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.
49
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.
50
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.
!
Warning
Disconnect the electric power to the ice machine and dispenser at the electric service switch box and turn off the water supply before proceeding.
Follow the procedure below to remove the water inlet valve.
1. Remove the 1/4” hex head screws.
2. Remove, clean, and install the filter screen.
4 Hex Head
Screws
51
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. If the dump valve is not leaking, do not remove it. Instead, follow the “Ice Machine
Cleaning Procedure”.
52
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.
53
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/I0850
I0906/I1000/I1100/I1200
I1400/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).
54
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.
55
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.
56
Power Button Cleaning Button
Manitowoc
LCD Display
Navigation Arrows
Menu
Button
Checkmark
Operation
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.
57
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.
58
Menu Navigation Overview
Menu Button ON/OFF Button Cleaning Button Timer Initiated
Machine
Info
When
Alert
Present
Alerts
Home Screen
When
Message
Present
Messages
Main Menu
Set-up
Energy
Saver
Defaults
Clean
Function
Service
AuCS Clean
Function
EXIT
Password Entry
(Optional)
Defaults
Exit
Return to
Home Screen
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
Ice Program
Water Miser
Statistics
Exit
Press to power ON/OFF
Press to access cleaning function
Data History
Real Time Data
Diagnostics
Manual Harvest
Replace Control Board
USB Setup
Event Log
Exit
Press to access Main Menu
Press to select menu/sub-menu option
Navigate Menus
59
Display Panel Navigation
[ L a n g u a g e > ] â–¼
T i m e & D a t e >
T i m e C o n f i g >
U n i t s > â–¼
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. “
â–¼
” and “
â–²
” 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.
0 7 2 4 1 0
1 4 : 0 8
E x i t >
60
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.
[ M o / D a y / Y r ( ) ] â–¼
D a y / M o / Y r ( )
1 2 H o u r ( )
2 4 H o u r ( ) â–¼
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.
61
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.
O f f
O n / O f f M o d e
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.
62
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
63
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
64
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.
E n t e r P a s s w r d â–²
[ ]
E x i t >
65
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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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
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
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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
Units
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LUMINICE
Ice Bin Sensor
Exit
Set-Up Menu
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
.
[ M o / D a y / Y r ( ) ] â–¼
D a y / M o / Y r ( )
1 2 H o u r ( )
2 4 H o u r ( ) â–¼
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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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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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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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 microorganisms 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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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 91 for full
specification and formatting details.
FACTORY DEFAULTS
The entire setup can be reset to factory defaults listed
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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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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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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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 00000000
00000000
00000000
00000000
00000000
00000000
Lifetime
Exit
RealTime Data Time & Temp
Inputs
Outputs
Exit
Inputs
Exit
Man Harvest Hrvst Started
Exit
Repl Cntl Bd Manual Setup
Exit
USB Setup USB Stick
Exit
Event Log View ELog
Exit
Exit
81
82
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
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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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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
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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
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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 97),
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
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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
88
E20
E21
E22
E23
E24
E25
E26
E27
E13
E14
E15
E16
E17
E18
E19
E28
E29
E30
E31
E32
E33
E34
EVENT LOG
Refer to the following table for Event Code descriptions.
Code
E01
E02
E03
E04
E05
E06
E07
E08
E09
E10
E11
E12
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
89
90
91
92
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.
93
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.
94
UPGRADING FIRMWARE WITH A FLASH DRIVE
Important
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 93 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.
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Thermistors
T1
T2
T3
T4
Display
Bin Switches
Bin
Thermostat USB
Dump Valve
Left Bin Switch Light
Right Bin Switch Light
Water Level Probe Light
Ice Thickness Probe Light
USB Connector
Display Light
Micro Light
Clean Light
Harvest Light
SL-1 Light
SL-2 Light
Transformer
RS485
RT Harvest
Bin LED
Compressor
Battery
LuminIce
Water
Level
Probe
LT Harvest
Relay Lights Pump
Control Board
Fuse
10. Follow the on-screen instructions:
A. Insert Drive (Insert the flash drive into the
USB port on the ice machine’s control board.)
B. Press Check (Press the Checkmark.) Do not 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.
96
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.
Important
The flash drive must be formatted before using,
Refer to page 93 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.
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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.
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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.
Important
Refrigeration compressors must be operated for a minimum break in period of 24 hours
before full ice production will be reached.
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ICE THICKNESS CHECK
After a harvest cycle, inspect the ice cubes in the ice storage bin. The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8" (3 mm).
NOTE: Make sure the water curtain or splash shield is in place when performing this check. It prevents water from splashing out of the water trough.
1. Inspect the bridge connecting the cubes. It should be about 1/8" (3 mm) thick.
2. If adjustment is necessary, turn the ice thickness probe adjustment screw clockwise to increase bridge thickness, counterclockwise to decrease bridge thickness. As a starting point place a 9/32"
(7 mm) drill bit between the ice thickness probe and the evaporator. Make final adjustments to achieve a 1/8" (3 mm) thick bridge.
NOTE: Turning the adjustment 1/3 of a turn will change the ice thickness about 1/16" (1.5 mm).
1/8" (3 mm)
ICE BRIDGE THICKNESS
PLACE 9/32” DRILL BIT
HERE TO SET INTIAL
Ice Thickness Check
3. Make sure the ice thickness probe wire doesn’t restrict movement of the probe.
100
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).
101
Freeze Sequence
3. Prechill
The compressor is on for 30 seconds (60 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.
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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.)
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.
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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 page 87
• The maximum freeze time is 60 minutes at which time the control board automatically initiates a harvest sequence.
• The maximum harvest time is 3.5 minutes. The control board automatically initiates a freeze sequence when these times are exceeded.
• The maximum water fill is 12 minutes.
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Dump Va
105
Dump Va
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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.
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Freeze Sequence
3. Prechill
The compressor is on for 30 seconds (60 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.
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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.)
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.
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Dump Va le On/ O
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Dump Va ff Then On
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This Page Intentionally Left Blank
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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 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 3.5 minutes, the control board automatically returns the ice machine to the freeze cycle. If 500 consecutive 3.5 minute harvest cycles occur, the ice machine stops.
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
NOTE: 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.
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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.
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SAFETY LIMIT #1
Freeze time exceeds 60 minutes for 6 consecutive freeze cycles.
Possible cause checklist
Improper Installation
•
Refer to “Installation/Visual Inspection Checklist” on page 135
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-condensable 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
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SAFETY LIMIT #2
Harvest time exceeds 3.5 minutes for 500 consecutive harvest cycles
Possible Cause Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
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
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.
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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
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RESET TO FACTORY DEFAULTS
Before starting troubleshooting procedures, reset the control board to factory defaults to prevent misdiagnosis. 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 “Password Entry” on page 65
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120
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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.
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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.
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.
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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?
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126
127
Hot -an
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129
130
Hot -an
131
132
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.
_________
Freeze Time
+ _________
Harvest Time
= _________
Total Cycle
Time
2.
_________
Minutes in
24 Hrs.
÷ _________
Total Cycle
Time
= _________
Cycles per
Day
3.
_________
Weight of
One Harvest
× _________
Cycles per
Day
= _________
Actual 24-
Hour
Production
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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.
134
Installation/Visual Inspection Checklist
Inadequate Clearances
• Check all clearances on sides, back and top.
Reference “Clearance Requirements” on page 31
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
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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
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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.
Important
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.
137
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
Inlet
ICE
Thin at Inlet
ICE
Thin at Outlet
138
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
Outlet
Inlet
Thin at Inlet
ICE
ICE
ICE
Thin at Outlet
139
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..
Outlet
Inlet
Outlet
Inlet
ICE
Thin at Inlet
ICE
ICE
Thin at Outlet
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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.
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FREEZE CYCLE DISCHARGE PRESSURE
HIGH CHECKLIST
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
Air Condenser
• Dirty condenser filter
• Dirty condenser fins
• High inlet air temperature
• Condenser discharge air recirculation
•
Defective fan cycling control (page 185)
• 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
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FREEZE CYCLE DISCHARGE PRESSURE
LOW CHECKLIST
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
Air Cooled Condensers
• Defective head pressure control valve, won’t
• Defective fan cycle control, stuck closed
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
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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.
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Suction Pressure High Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
Discharge Pressure
• Discharge pressure is too high and is affecting suction pressure – refer to “Freeze Cycle
Discharge Pressure High Checklist” (page 142)
Improper Refrigerant Charge
• Overcharged (also see “Freeze Cycle Discharge
Pressure High Checklist” page 142)
• 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
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SUCTION PRESSURE LOW CHECKLIST
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
Discharge Pressure
• Discharge pressure is too low and is affecting low side – refer to “Freeze Cycle Discharge Pressure
Improper Refrigerant Charge
• Undercharged
• Wrong type of refrigerant
Other
• Non-Manitowoc components in system
• Improper water supply over evaporator – refer to
“Water System Checklist” (page 136)
• Restricted/plugged liquid line drier
• Restricted/plugged tubing in suction side or liquid line of refrigeration system
• TXV starving
146
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 page 81
Service Menu Navigation 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.
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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).
Important
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.
!
Warning
The inlet of the harvest valve and the compressor discharge line could be hot enough to burn your hand. Just touch them momentarily.
148
Findings
The inlet of the harvest valve is cool enough to touch and the compressor discharge line is hot.
Cool & Hot
The inlet of the harvest valve is hot and approaches the temperature of a hot compressor discharge line.
Comments
Normal Operation
This is normal as the discharge line should always be too hot to touch and the harvest valve inlet, although too hot to touch during harvest, should be cool enough to touch after 5 minutes into the freeze cycle.
Leaking Harvest Valve
The harvest valve inlet did not cool down during the freeze cycle due to continual leakage of compressor discharge gas through the valve.
Hot & Hot
Both the inlet of the harvest valve and the compressor discharge line are cool enough to touch.
Cool & Cool
Harvest Valve Not Leaking
The compressor discharge line should not be cool to the touch 5 minutes into the freeze cycle.
This symptom would not be caused by a harvest valve leaking.
5. Record your findings on the table.
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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.
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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
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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.
152
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.
153
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.
154
155
156
157
158
159
160
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.
161
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.
162
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.
163
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. No power at 9 pin connector - Replace control board
164
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.
•
• No - Press the right arrow to activate the cursor, then use up/down arrows to enter the correct date.
165
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.
166
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.
!
Warning
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.
!
Warning
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)
Result
Replace fuse
Fuse is good
167
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.
Important
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.
168
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).
169
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. Curtain switch remains open and control board light is off - Verify procedure was correctly followed - Replace control board.
170
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 water inlet valve to 12.5 minutes. 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).
171
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 12.5 minutes for single evaporator machines.
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.
172
Diagnostics
SYMPTOMS
• Water trough overfills
• Water trough will not fill
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.
173
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.
Black
White
Red
Short Probe
Ohm water Level Probe and Wiring Harness
174
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
Ohm Water Level Probe
Short Probe
175
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. Wtr High displays No and the water continues to flow. Replace control board.
176
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 control system includes a built-in safety which will automatically cycle the ice machine into harvest after
60 minutes in the freeze cycle.
Maximum Temperature
Maximum temperature for the ice thickness probe is
120 degrees F (49 degree’s C). Do not clean probe in a dishwasher or expose to temperatures above the maximum.
177
Ice Thickness Check
The ice thickness probe is factory-set to maintain the ice bridge thickness at 1/8 in. (32 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/splash shield 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. (32 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
ADJUSTING
SCREW
1/8” ICE BRIDGE THICKNESS
PLACE 9/32” (7mm) DRILL BIT
HERE TO SET INITIAL GAP
ICE THICKNESS ADJUSTMENT
178
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 Numbers increasing into the thousands indicates a properly working ice thickness probe and control board.
Fail Numbers do not move or do not increase into the thousands - Ohm the ice thickness probe.
179
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
• 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 Ohm values are within range - Check control board voltage at the ice thickness probe connection.
Fail 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
Control board voltage is normal
Replace control board
180
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, 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 - Perform
steps 1 & 2 on page 179 to test ice thickness
probe and control board.
• Ice machine will not cycle into harvest - Replace control board.
181
HIGH PRESSURE CUTOUT (HPCO) CONTROL
FUNCTION
Stops the ice machine if subjected to excessive highside pressure. The HPCO control is normally closed, and opens on a rise in discharge pressure.
SPECIFICATIONS.
Specifications
Cut-Out
450 psig ±7
(3102 kPa ±48 31 bar ±.48)
Automatic Reset
Cut-In
300 psig ±10
(2068 kPa 20.68 bar)
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”.
182
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.
183
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.
184
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
I0660 / I0850 /
JC0995
I1000
I1400 / I1800
Specifications
Cut-In (Close)
250 ±5
(1723 kPa ±.34)
(17.23 bar ±.34)
275 psig ±5
(1896 kPa ±34)
(18.96 bar±.34)
Cut-Out
(Open)
200 ±5
(1517 kPa ±.34)
(15.17 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
Fan
Should Be:
Running
Off
185
:
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 °F
-30° - -20° -22° - -4°
-20° - -10°
-10° - 0°
0° - 10°
10° - 20°
20° - 30°
30° - 40°
40° - 50°
-4° - 14°
14° - 32°
32° - 50°
50° - 68°
68° - 86°
86° - 104°
104° - 122°
50° - 60°
60° - 70°
70° - 80°
80° - 90°
90° - 100°
100° - 110°
110° - 120°
120° - 130°
122° - 140°
140° - 158°
158° - 176°
176° - 194°
194° - 212°
212° -230°
230° - 248°
248° - 266°
130° - 140°
140° - 150°
150° - 160°
160° - 170°
170° - 180°
180° - 190°
190° - 200°
266° - 284°
284° - 302°
302° - 320°
320° - 338°
338° - 356°
356° - 374°
374° - 392°
Resistance
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
186
Thermistor Matrix
Four thermistors are located on the ice machine. They are labeled T1, T2, T3, T4.
187
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.
188
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.
189
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.
190
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.
191
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 de-energized.
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.
192
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.
!
Warning
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.
193
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
194
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 60 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.
195
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.
196
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
Corrective
Measure
Discharge Pressure - High
Liquid Line Temperature -
Hot
Discharge Pressure - Low
Liquid Line Temperature -
Cold
Discharge Pressure - Low
Liquid Line Temperature -
Hot
Valve stuck in bypass
Valve not bypassing
Ice Machine
Low on
Charge
Replace valve
Replace valve
Refrigerant
Charge
Verification
197
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).
198
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.
INLET
OUTLET
FLOW
HPR SOLENOID
• 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.
INLET
OUTLET
HPR VALVE
SV3053
199
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.
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 diagnostics
2. Ice fill pattern normal?
Refer to “Ice Formation Pattern” if ice fill is not
200
3. Freeze time normal?
(Refer to Cycle Times/Refrigerant Pressures/24
Hour Ice Production Charts page 223)
Shorter freeze cycles - Refer to head pressure
control valve diagnostics page 195.
Longer freeze cycles - Refer to water system
checklist page 136, then refer to Refrigeration
Diagnostic Procedures.
4. Harvest time is longer than normal and control board indicates safety limit #2?
(Refer to Cycle Times/Refrigerant Pressures/24
Hour Ice Production Charts page 223)
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
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 “Freeze Cycle Refrigeration
System Operational Analysis Tables” for data
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 head pressure
control valve diagnostics page 195.
8. Freeze cycle Suction Pressure normal?
Refer to analyzing suction pressure if suction
pressure is high or low page 144.
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.
201
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
202
Refrigerant Recovery/Evacuation
SELF-CONTAINED MODEL PROCEDURE
Do not purge refrigerant to the atmosphere. Capture refrigerant using recovery equipment. Follow the manufacturer’s recommendations.
Important
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.
Important
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.
203
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.
204
Self-Contained Charging Procedures
Important
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.
CLOSED
MANIFOLD SET
OPEN
LOW SIDE
ACCESS
VALVE
HIGH SIDE
ACCESS
VALVE
REFRIGERANT
CYLINDER
SCALE
CLOSED
OPEN
CHARGING CONNECTIONS
VACUUM PUMP/
RECOVERY UNIT
205
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. Remove the hoses from the ice machine and install the caps.
206
REMOTE CONDENSER MODEL PROCEDURE
Refrigerant Recovery/Evacuation
Do not purge refrigerant to the atmosphere. Capture refrigerant using recovery equipment. Follow the manufacturer’s recommendations.
Important
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.
Important
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.
207
CONNECTIONS
Important
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.
208
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.
209
ACCESS
REMOTE
RECOVERY/EVACUATION
CONNECTIONS
210
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 Schraeder 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.
211
HEAT EXCHANGER EVAPORATOR
EXPANSION
VALVE x
SOLENOID
VALVE
LOW SIDE
ACCESS VALVE
COMPRESSOR x
HARVEST
PRESSURE
REGULATING
VALVE
LIQUID
LINE
SOLENOID
DRIER
HARVEST
PRESSURE
SOLENOID
VALVE
STRAINER
HIGH SIDE
ACCESS VALVE
CHECK
VALVE
RECEIVER
ACCESS VALVE
CHECK VALVE
DISCHARGE LINE
QUICK CONNECT
SCHRAEDER FITTING
REMOTE CONDENSER
R
C
B
HEAD PRESSURE
CONTROL VALVE
MANIFOLD SET
CLOSED OPEN
TEE
SCALE
OPEN
REMOTE CHARGING
CONNECTIONS
CLOSED
VACUUM PUMP/
RECOVERY UNIT
212
System Contamination Clean-Up
General
This section describes the basic requirements for restoring contaminated systems to reliable service.
Important
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.
213
Contamination Cleanup Chart
Symptoms/Findings
Required Cleanup
Procedure
No symptoms or suspicion of contamination
Normal evacuation/recharging procedure
Moisture/Air Contamination symptoms
Refrigeration system open to atmosphere for longer than
15 minutes
Refrigeration test kit and/or acid oil test shows contamination
Leak in water cooled condenser
No burnout deposits in open compressor lines
Mild Compressor Burnout symptoms
Oil appears clean but smells acrid
Refrigeration test kit or acid oil test shows harmful acid content
No burnout deposits in open compressor lines
Severe Compressor Burnout symptoms
Oil is discolored, acidic, and smells acrid
Burnout deposits found in the compressor, lines, and other components
Mild contamination cleanup procedure
Mild contamination cleanup procedure
Severe contamination cleanup procedure
214
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.
Important
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.
215
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.
Important
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.
216
Important
Dry nitrogen is recommended for this procedure.
This will prevent CFC release.
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.
217
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
Important
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.
!
Warning
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.
NOTE: The pressure controls will operate normally once the tubing is re-rounded. Tubing may not reround 100%.
218
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 offthe-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.
Important
Driers are covered as a warranty part. The drier must be replaced any time the system is opened for repairs.
219
220
221
This Page Intentionally Left Blank
222
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%.
223
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 70/21 90/32
9.6-11.5
10.8-12.9
12.3-14.6
10.6-12.6
12.3-14.6
13.5-16.0
11.8-14.0
13.9-16.4
15.0-17.7
13.2-15.7
14.6-17.3
16.2-19.2
15.0-17.7
15.8-18.7
17.7-20.9
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
Water Temperature °F/°C 1
50/10 70/21 90/32
70/21
80/27
90/32
100/38
110/43
310
285
260
235
210
280
250
225
215
200
250
230
210
195
180
1 Based on average ice slab weight of 2.40 - 2.80 lb.
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
195-245
Suction
Pressure
PSIG
50-20
195-260
220-290
240-320
285-370
330-415
50-20
60-24
60-25
70-28
78-32
Harvest Cycle
Discharge
Pressure
PSIG
135-160
Suction
Pressure
PSIG 1
75-100
135-165
150-170
170-195
200-220
230-250
80-110
90-120
115-135
130-155
150-175
1 Suction pressure drops gradually throughout the freeze cycle
224
I0300W
Self-Contained Water-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 70/21 90/32
10.0-11.9
11.1-13.2
12.3-14.6
10.2-12.2
11.3-13.4
12.3-14.6
10.4-12.4
11.8-14.0
12.6-15.0
10.6-12.6
11.8-14.0
12.6-15.7
10.8-12.9
11.8-14.0
12.9-15.3
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
50/10 70/21 90/32
300
295
275
270
250
250
290
285
280
260
260
260
245
245
240
1 Based on average ice slab weight of 2.40 - 2.80 lb.
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
220-230
Suction
Pressure
PSIG
50-25
220-230
225-245
230-250
230-260
235-260
50-28
65-29
65-30
70-31
70-31
Harvest Cycle
Discharge
Pressure
PSIG
130-170
Suction
Pressure
PSIG 1
75-100
130-170
130-180
135-180
145-190
150-190
85-100
85-110
85-115
90-120
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
225
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
Freeze Time
Water Temperature °F/°C
50/10 70/21 90/32
Harvest
Time 1
70/21
80/27
90/32
100/38
13.1-15.2
15.7-18.2
16.6-19.3
15.7-18.2
17.3-20.1
18.9-21.9
18.1-21.0
20.3-23.5
21.3-24.6
21.3-24.6
23.0-26.6
24.3-28.1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
Water Temperature °F/°C 1
50/10 70/21 90/32
70/21
80/27
90/32
100/38
335
285
250
215
285
260
225
200
270
240
215
190
1 Based on average ice slab weight of 3.40 - 3.90 lb.
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
195-260
195-260
215-295
240-320
290-365
325-415
60-34
70-36
75-36
80-38
90-40
95-42
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
130-160
130-165
140-165
155-180
175-215
200-230
80-115
90-120
110-125
120-135
140-165
160-185
1 Suction pressure drops gradually throughout the freeze cycle
226
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
Freeze Time
Water Temperature °F/°C
50/10 70/21 90/32
13.3-15.5
15.4-17.9
16.6-19.3
Harvest
Time 1
80/27
90/32
100/38
110/43
13.8-16.1
16.0-18.6
17.3-20.1
1.3-16.6
16.6-19.3
18.1-21.0
14.8-17.2
17.3-20.1
18.9-21.9
1.4-17.9
18.1-21.0
19.5-22.9
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
Water Temperature °F/°C 1
50/10 70/21 90/32
70/21
80/27
90/32
100/38
110/43
330
320
310
300
290
290
280
270
260
250
270
260
250
240
230
1 Based on average ice slab weight of 3.40-3.90 lb.
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
220-245
Suction
Pressure
PSIG
60-33
220-250
235-265
250-300
250-360
250-380
60-34
75-38
80-40
85-41
90-42
Harvest Cycle
Discharge
Pressure
PSIG
140-185
Suction
Pressure
PSIG 1
85-105
140-190
145-195
145-200
175-225
200-240
90-120
90-145
100-145
110-150
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
227
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 70/21 90/32
10.2-11.9
11.1-12.9
12.1-14.1
11.4-13.3
12.3-14.3
13.3-15.5
12.5-14.5
13.8-16.1
14.8-17.2
13.8-16.1
15.4-17.9
16.6-19.3
16.3-18.9
17.7-20.5
19.3-22.4
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
Water Temperature °F/°C 1
50/10 70/21 90/32
70/21
80/27
90/32
100/38
110/43
420
380
350
320
275
390
355
320
290
255
360
330
300
270
235
1 Based on average ice slab weight of 3.40 - 3.90 lb.
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
195-255
Suction
Pressure
PSIG
50-25
195-255
220-275
250-320
290-370
310-380
60-25
62-28
70-31
75-33
80-33
Harvest Cycle
Discharge
Pressure
PSIG
125-185
Suction
Pressure
PSIG 1
70-90
135-190
135-195
175-195
190-215
210-250
80-110
80-110
85-115
115-140
120-170
1 Suction pressure drops gradually throughout the freeze cycle
228
I0450W
Self-Contained Water-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
9.9-11.6
70/21
11.1-12.9
90/32
12.1-14.1
10.2-11.9
11.6-13.5
12.5-14.5
10.3-12.0
12.1-14.1
12.9-15.0
10.4-12.2
12.5-14.5
13.3-15.5
10.7-12.5
12.9-15.0
14.3-16.6
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
430
70/21
390
90/32
360
420
415
410
400
375
360
350
340
350
340
330
310
1 Based on average ice slab weight of 3.40 - 3.90 lb.
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
220-230
220-240
230-240
220-240
235-240
240-240
48-28
52-28
55-29
55-30
60-30
60-30
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
130-160
130-160
130-160
135-160
170-205
140-205
70-95
75-100
75-110
80-115
80-120
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
229
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
Freeze Time
Water Temperature °F/°C
50/10
11.0-12.6
70/21
12.9-14.8
90/32
14.3-16.3
80/27
90/32
100/38
110/43
12.4-14.3
14.5-16.5
16.2-18.5
18.6-21.2
14.9-17.0
15.5-17.7
17.7-20.2
20.2-22.1
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
530
475
415
375
330
70/21
460
405
390
345
305
90/32
420
400
350
310
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.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
200-240
205-245
210-270
270-325
300-400
330-425
50-28
70-30
70-31
70-32
90-34
90-36
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
120-145
120-150
120-165
120-190
210-230
220-240
70-100
80-110
80-110
100-120
130-150
140-160
1 Suction pressure drops gradually throughout the freeze cycle
230
I0500W
Self-Contained Water-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 70/21 90/32
10.5-12.1
13.2-15.1
15.3-17.5
11.9-13.6
13.7-15.7
15.5-17.7
12.3-14.1
13.9-15.9
15.7-17.9
12.6-14.4
14.3-16.3
16.2-18.5
12.9-14.8
14.5-16.5
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
550
70/21
450
90/32
395
495
480
470
460
435
430
420
415
390
385
375
365
1 Based on average ice slab weight of 4.60 - 5.20 lb
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
230-240
230-240
230-250
235-250
235-250
60-33
65-33
70-33
75-33
75-33
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
130-150
130-160
170-190
170-190
170-190
95-120
95-120
95-120
95-120
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
231
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
Freeze Time
Water Temperature °F/°C
50/10 70/21 90/32
Harvest
Time 1
-20/-29 to
70/21
90/32
12.3-14.1
12.7-14.7
13.7-15.8
12.4-14.3
13.9-15.9
14.7-17.0
0.75-2.0
100/38
110/43
12.8-14.9
14.1-16.3
15.3-17.7
13.3-15.4
14.5-16.7
16.0-18.5
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
480
455
440
425
70/21
445
430
405
395
90/32
415
390
375
360
1 Based on average ice slab weight of 4.60 - 5.20
lb
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
205-220
Suction
Pressure
PSIG
50-32
240-260
240-270
250-270
300-375
310-375
60-32
60-32
60-32
85-35
90-36
Harvest Cycle
Discharge
Pressure
PSIG
100-150
Suction
Pressure
PSIG 1
75-100
110-160
110-160
120-160
130-170
130-170
75-100
75-100
80-100
80-100
80-100
1 Suction pressure drops gradually throughout the freeze cycle
232
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 70/21 90/32
8.8-10.3
9.9-11.6
10.2-11.9
11.7-13.7
11.4-13.3
13.8-16.1
10.7-12.5
13.6-15.8
15.4-17.9
12.5-14.5
14.8-17.2
16.6-19.3
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
475
430
400
350
290
70/21
420
380
325
300
270
90/32
370
320
290
270
250
1 Based on average ice slab weight of 3.40 - 3.90 lb
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
195-255
195-270
220-285
250-320
290-390
320-400
50-30
60-30
62-32
70-34
75-35
80-37
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
125-185
135-190
135-195
175-195
190-215
225-250
70-90
80-115
80-115
85-115
115-140
130-170
1 Suction pressure drops gradually throughout the freeze cycle
233
I0520W
Self-Contained Water-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
9.1-10.7
70/21
10.9-12.7
90/32
11.7-13.7
9.4-11.0
9.6-11.3
11.2-13.1
12.1-14.1
11.6-13.5
12.5-14.5
9.9-11.6
11.9-13.9
12.9-15.0
10.2-11.9
12.3-14.3
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
460
70/21
395
90/32
370
450
440
430
420
385
375
365
355
360
350
340
330
1 Based on average ice slab weight of 3.4 - 3.9
lb
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
220-250
225-265
225-270
225-275
235-280
52-30
56-30
62-31
65-32
65-32
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
160-190
170-190
170-195
170-205
170-205
85-100
90-110
95-115
100-102
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
234
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
Freeze Time
Water Temperature °F/°C
50/10.0
70/21.1
90/32.2
Harvest
Time 1
70/21
80/27
90/32
100/38
7.6-9.0
8.8-10.4
9.5-11.2
9.9-11.7
10.2-12.0
10.5-12.3
9.7-11.4
11.0-12.9
11.4-13.4
11.1-13.1
12.3-14.4
12.8-15.0
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
Water Temperature °F/°C 1
50/10.0
70/21.1
90/32.2
70/21
80/27
90/32
100/38
650
575
530
470
540
520
475
430
505
495
460
415
1 Based on average ice slab weight of 4.12 - 4.75 lb.
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
220-255
220-270
230-300
265-345
300-395
340-430
45-27
45-28
50-30
54-32
60-35
65-39
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
140-160
145-170
165-185
180-215
210-245
240-280
60-80
70-90
75-95
80-105
85-120
100-140
1 Suction pressure drops gradually throughout the freeze cycle
235
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
Freeze Time
Water Temperature °F/°C
Harvest
Time 1
70/21
50/10
7.6-9.0
70/21
9.0-10.6
90/32
9.7-11.4
80/27
90/32
100/38
8.8-10.4
9.6-10.6
9.1-10.7
9.1-10.7
9.1-10.7
9.5-11.2
9.9-11.7
9.9-11.7
10.2-12.0
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
650
70/21
565
90/32
530
575
565
560
560
560
540
520
520
505
1 Based on average ice slab weight of 4.12 - 4.75 lb.
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
240-250
Suction
Pressure
PSIG
36-26
240-250
240-250
245-255
245-260
245-265
36-26
40-28
40-29
40-30
40-30
Harvest Cycle
Discharge
Pressure
PSIG
140-190
Suction
Pressure
PSIG
65-95
1
140-190
150-195
160-200
170-205
180-210
65-95
70-100
70-100
75-105
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
236
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
Freeze Time
Water Temperature °F/°C
50/10
7.9-9.4
70/21
9.9-11.7
90/32
10.5-12.3
Harvest
Time 1
80/27
90/32
100/38
110/43
9.0-10.6
9.1-10.7
9.9-11.7
9.9-11.7
10.7-12.6
10.7-12.6
9.9-11.7
10.9-12.8
11.7-13.7
10.9-12.8
12.0-14.0
12.8-15.0
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser
°F/°C
-20/-29 to 70/21
Water Temperature °F/°C 12
50/10
630
70/21
520
90/32
495
80/27
90/32
100/38
110/43
565
560
520
480
520
520
480
440
485
485
450
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.
Entering
Condenser
°F/°C
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
-20/-29 to
50/10
70/21
80/27
90/32
100/38
110/43
210-240
225-250
245-275
245-285
260-315
290-365
40-29
50-30
52-31
52-32
55-32
60-34
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
130-190
130-200
130-200
135-200
140-200
170-200
62-80
75-95
75-100
80-100
80-100
85-100
1 Suction pressure drops gradually throughout the freeze cycle
237
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
Freeze Time
Water Temperature °F/°C
50/10.0
7.6-9.0
70/21.1
9.5-11.2
90/32.2
10.2-12.0
Harvest
Time 1
80/27
90/32
100/38
8.8-10.4
9.7-11.4
9.9-11.7
11.0-12.9
10.5-12.3
11.4-13.4
11.1-13.1
12.3-14.4
12.8-15.0
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
50/10.0
650
70/21.1
540
90/32.2
505
575
530
470
520
475
430
495
460
415
1 Based on average ice slab weight of 4.12 - 4.75 lb.
OPERATING PRESSURES
Air Temp
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
220-255
Suction
Pressure
PSIG
45-27
220-270
230-300
265-345
300-395
340-430
45-28
50-30
54-32
60-35
65-39
Harvest Cycle
Discharge
Pressure
PSIG
140-160
Suction
Pressure
PSIG
60-80
1
145-170
165-185
180-215
210-245
240-280
70-90
75-95
80-105
85-120
100-140
1 Suction pressure drops gradually throughout the freeze cycle
238
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
Freeze Time
Water Temperature °F/°C
Harvest
Time 1
70/21
50/10
7.6-9.0
70/21
9.0-10.6
90/32
9.7-11.4
80/27
90/32
100/38
8.8-10.4
9.6-10.6
9.1-10.7
9.1-10.7
9.1-10.7
9.5-11.2
9.9-11.7
9.9-11.7
10.2-12.0
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
650
70/21
565
90/32
530
575
565
560
560
560
540
520
520
505
1 Based on average ice slab weight of 4.12 - 4.75 lb.
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
240-250
Suction
Pressure
PSIG
36-26
240-250
240-250
245-255
245-260
245-265
36-26
40-28
40-29
40-30
40-30
Harvest Cycle
Discharge
Pressure
PSIG
140-190
Suction
Pressure
PSIG
65-95
1
140-190
150-195
160-200
170-205
180-210
65-95
70-100
70-100
75-105
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
239
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
Freeze Time
Water Temperature °F/°C
50/10
7.9-9.4
70/21
9.9-11.7
90/32
10.5-12.3
Harvest
Time 1
80/27
90/32
100/38
110/43
9.0-10.6
9.1-10.7
9.9-11.7
9.9-11.7
10.7-12.6
10.7-12.6
9.9-11.7
10.9-12.8
11.7-13.7
10.9-12.8
12.0-14.0
12.8-15.0
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser
°F/°C
-20/-29 to 70/21
Water Temperature °F/°C 12
50/10
630
70/21
520
90/32
495
80/27
90/32
100/38
110/43
565
560
520
480
520
520
480
440
485
485
450
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.
Entering
Condenser
°F/°C
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
-20/-29 to
50/10
70/21
80/27
90/32
100/38
110/43
210-240
225-250
245-275
245-285
260-315
290-365
40-29
50-30
52-31
52-32
55-32
60-34
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
130-190
130-200
130-200
135-200
140-200
170-200
62-80
75-95
75-100
80-100
80-100
85-100
1 Suction pressure drops gradually throughout the freeze cycle
240
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 70/21 90/32
9.0-10.4
9.8-11.2
10.5-12.1
10.1-11.6
10.8-12.4
11.6-13.4
11.3-13.0
12.9-14.8
12.9-14.8
12.9-14.8
13.7-15.7
14.6-16.7
14.9-17.0
15.8-18.0
16.5-18.8
Harvest
Time 1
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser °F/°C
Water Temperature °F/°C 1
50/10 70/21 90/32
70/21
80/27
90/32
100/38
110/43
785
715
645
575
505
735
675
575
545
480
690
630
575
515
460
1 Based on average ice slab weight of 5.75 - 6.50 lb.
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
200-255
Suction
Pressure
PSIG
45-25
200-255
250-275
315-260
330-385
335-400
45-26
50-28
55-30
75-34
78-35
Harvest Cycle
Discharge
Pressure
PSIG
125-140
Suction
Pressure
PSIG
70-90
1
125-140
130-160
160-175
200-225
200-230
75-90
80-100
90-115
130-160
130-160
1 Suction pressure drops gradually throughout the freeze cycle
241
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
Freeze Time
Water Temperature °F/°C
Harvest
Time 1
70/21
50/10 70/21 90/32
8.4-9.7
9.5-10.9 10.7-12.3
80/27
90/32
100/38
8.7-10.1
9.7-11.1 10.8-12.6
9.1-10.5 11.4-13.1 11.0-12.8
9.5-10.9 10.3-11.9 11.3-13.0
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21
Water Temperature °F/°C 1
50/10
835
70/21
755
90/32
680
80/27
90/32
100/38
110/43
810
780
755
730
740
640
700
680
665
655
645
635
1 Based on average ice slab weight of 5.75 - 6.50 lb.
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
Freeze Cycle
Discharge
Pressure
PSIG
230-240
Suction
Pressure
PSIG
45-28
Harvest Cycle
Discharge
Pressure
PSIG
135-160
Suction
Pressure
PSIG 1
70-85
70/21
80/27
90/32
100/38
110/43
230-240
230-240
240-250
240-255
240-265
60-28
65-28
65-28
70-30
70-32
135-160
135-160
135-160
140-160
140-160
70-85
70-85
70-90
75-95
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
242
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
Freeze Time
Water Temperature °F/°C
50/10 70/21 90/32
Harvest
Time 1
-20/-29 to
70/21
80/27
9.5-11.0
11.0-12.6
12.0-13.7
10.0-11.5
10.8-12.4
11.2-12.9
0.75-2.0
90/32
100/38
11.3-13.0
12.1-13.8
13.4-15.4
12.0-13.7
13.0-14.9
14.1-16.2
110/43 12.8-14.6
13.8-15.8
14.9-17.0
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
750
720
645
615
580
70/21
665
675
610
570
540
90/32
615
650
555
530
505
1 Based on average ice slab weight of 5.75 -6.5 lb
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
200-220
Suction
Pressure
PSIG
40-21
225-250
250-265
260-295
310-375
325-390
50-30
55-31
60-32
65-35
70-36
Harvest Cycle
Discharge
Pressure
PSIG
140-160
Suction
Pressure
PSIG
70-85
1
140-160
140-160
140-160
145-170
145-170
70-90
70-95
70-95
75-100
80-100
1 Suction pressure drops gradually throughout the freeze cycle
243
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 70/21 90/32
8.7-10.3
9.7-11.5
10.2-12.1
10.8-12.8
10.5-12.4
11.1-13.1
10.5-12.4
11.9-14.1
12.2-14.5
11.3-13.4
12.3-14.6
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
875
70/21
765
90/32
725
800
745
695
745
665
645
710
650
630
1 Based on average ice slab weight of 6.2 - 7.2 lb
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
220-255
Suction
Pressure
PSIG
45-27
220-270
230-300
260-315
300-395
320-400
45-30
50-30
55-32
74-34
78-34
Harvest Cycle
Discharge
Pressure
PSIG
125-140
Suction
Pressure
PSIG
60-80
1
150-160
150-160
160-175
180-220
200-230
75-90
80-100
90-115
130-160
130-160
1 Suction pressure drops gradually throughout the freeze cycle
244
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
Freeze Time
Water Temperature °F/°C
Harvest
Time 1
70/21
50/10
9.1-10.8
70/21 90/32
10.3-12.2
10.9-12.9
80/27
90/32
100/38
110/43
10.2-12.1
10.4-12.3
11.1-13.1
10.4-12.3
11.3-13.3
11.4-13.5
11.6-12.5
11.6-13.7
11.9-14.1
11.3-13.3
12.2-14.5
13.0-15.4
1-2.5
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
Water Temperature °F/°C 1
50/10 70/21 90/32
70/21
80/27
90/32
100/38
110/43
840
765
750
740
700
755
750
700
680
650
720
710
690
665
615
1 Based on average ice slab weight of 6.2 - 7.2 lb
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
225-235
Suction
Pressure
PSIG
45-28
225-235
230-245
225-235
235-250
235-265
45-30
50-30
55-31
55-32
60-32
Harvest Cycle
Discharge
Pressure
PSIG
130-160
Suction
Pressure
PSIG
75-90
1
130-160
130-160
130-160
135-160
140-160
75-90
75-90
75-90
75-95
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
245
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
Freeze Time
Water Temperature °F/°C
50/10
9.4-11.1
9.8-11.6
70/21 90/32
10.2-12.1
10.96-12.9
10.4-12.3
11.3-13.3
Harvest
Time 1
0.75-2.0
90/32
100/38
10.4-12.3
10.7-12.7
11.7-13.9
10.9-12.9
11.6-13.7
12.2-14.5
110/43 11.5-13.6
12.2-14.5
13.0-15.4
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
820
790
750
720
685
70/21
765
750
730
680
650
90/32
720
700
675
650
615
1 Based on average ice slab weight of 6.2 - 7.2 lb
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
240-260
Suction
Pressure
PSIG
60-30
245-260
245-270
250-285
285-350
310-375
60-30
60-31
60-32
65-34
70-36
Harvest Cycle
Discharge
Pressure
PSIG
120-145
Suction
Pressure
PSIG
70-90
1
120-145
120-145
125-145
135-165
145-170
75-90
75-90
75-95
75-100
75-100
1 Suction pressure drops gradually throughout the freeze cycle
246
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
Freeze Time
Water Temperature °F/°C
50/10 70/21 90/32
Harvest
Time 1
70/21
80/27
90/32
100/38
110/43
7.5-9.0
8.4-10.0
8.2-9.8
9.3-11.0
8.8-10.4
9.9-11.8
9.5-11.3
10.6-12.6
11.4-13.5
10.7-12.7
11.9-14.1
12.9-15.2
12.2-14.5
13.4-15.8
14.7-17.4
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
990
900
810
730
650
70/21
920
830
735
665
600
90/32
870
780
690
620
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.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
195-255
220-275
235-290
265-330
300-360
330-415
45-26
50-27
50-28
55-30
60-35
60-37
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
130-145
130-145
150-165
165-185
180-210
215-235
70-90
70-90
75-95
85-110
95-120
115-145
1 Suction pressure drops gradually throughout the freeze cycle
247
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
Freeze Time
Water Temperature °F/°C
Harvest
Time 1
70/21
50/10
7.4-8.9
70/21
8.5-10.1
90/32
9.4-11.1
90/32
100/38
110/43
7.8-9.3
7.9-9.4
8.0-9.5
8.9-10.6
9.1-10.8
8.0-10.9
9.7-11.5
9.8-11.6
9.9-11.8
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
1000
70/21
895
90/32
820
980
960
950
940
875
855
845
835
810
800
790
780
1 Based on average ice slab weight of 6.2 - 7.2 lb
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
215-225
215-225
220-225
220-230
230-250
240-260
45-22
45-23
45-24
45-25
50-26
50-27
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
145-170
150-170
150-175
155-175
160-195
170-200
75-85
75-90
75-95
80-100
80-110
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
248
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
Freeze Time
Water Temperature °F/°C
50/10
7.7-9.2
70/21
8.6-10.3
90/32
9.5-11.3
Harvest
Time 1
80/27
90/32
100/38
110/43
8.5-10.1
9.5-11.3
9.5-11.3
10.4-12.3
10.6-12.6
11.4-13.5
10.7-12.7
11.6-13.8
12.4-14.7
12.2-14.5
12.7-15.0
13.6-16.1
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
960
880
800
720
640
70/21
870
800
725
670
620
90/32
800
740
680
630
580
1 Based on average ice slab weight of 6.2 - 7.2 lb
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
200-220
220-260
245-285
250-300
285-330
300-375
35-22
40-24
45-25
50-27
60-32
60-32
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
100-165
100-170
100-170
100-170
130-180
130-190
70-85
70-90
70-95
70-95
75-100
80-100
1 Suction pressure drops gradually throughout the freeze cycle
249
I1200 SERIES
I1200A
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 70/21 90/32
8.3-9.2
9.2-10.2
8.9-9.9
9.9-10.9
9.7-10.7
10.6-11.8
10.2-11.3
10.9-12.1
11.8-13.1
11.4-12.6
12.3-13.5
13.3-14.7
12.9-14.2
13.9-15.4
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
1100
1010
925
840
750
70/21
1035
950
870
785
700
90/32
965
890
810
730
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.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
195-255
220-280
240-300
265-340
310-390
340-430
40-20
50-22
50-24
55-25
60-28
60-30
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
135-155
140-180
155-180
165-200
200-215
200-240
65-85
70-90
75-95
85-100
95-110
105-125
1 Suction pressure drops gradually throughout the freeze cycle
250
I1200W
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
70/21
8.8-9.7
90/32
10.1-11.1
8.9-9.9
9.0-10.0
9.1-10.1
9.2-10.2
10.1-11.1
10.5-11.6
10.3-12.1
11.1-12.2
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 1
50/10
1165
70/21
1050
90/32
935
1040
1030
1020
1010
935
900
870
860
830
825
820
815
1 Based on average ice slab weight of 7.5 - 8.2 lb
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
225-230
Suction
Pressure
PSIG
40-20
225-230
230-250
240-270
240-280
240-280
42-20
44-22
45-22
50-22
50-23
Harvest Cycle
Discharge
Pressure
PSIG
150-175
Suction
Pressure
PSIG
70-85
1
150-185
160-190
170-195
175-205
180-215
70-90
80-95
80-105
85-110
85-115
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 225 psig
3 Condenser Water Usage = 169 gal/100 lb ice @ 90°/70°F
251
I1400 SERIES
I1400A
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 70/21 90/32
8.3-9.5
9.1-10.4
9.1-10.4
9.9-11.3
10.2-11.6
11.2-12.8
9.6-11.0
11.3-12.8
12.0-13.7
10.7-12.2
12.6-14.3
13.6-15.4
12.0-13.6
14.3-16.2
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
1500
1395
1325
1205
1095
70/21
1395
1295
1155
1050
935
90/32
1260
1160
1090
980
920
1 Base on average ice slab weight of 10.25 - 11.50lb
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
220-280
220-280
240-290
260-330
300-370
330-410
40-24
40-26
50-27
50-27
54-28
60-29
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
150-180
160-180
160-180
180-200
200-220
220-250
70-90
70-90
70-90
80-100
90-115
100-130
1 Suction pressure drops gradually throughout the freeze cycle
252
I1400W
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
70/21
9.9-11.3
90/32
10.5-12.0
8.3-9.5
8.4-9.6
8.4-9.7
8.6-9.7
10.0-11.4
10.1-11.5
10.2-11.6
10.3-11.7
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
Water Temperature °F/°C 1
50/10 70/21 90/32
70/21
80/27
90/32
100/38
110/43
1515
1505
1495
1485
1475
1295
1285
1275
1265
1255
1225
1215
1210
1205
1200
1 Based on average ice slab weight of 10.25 - 11.50lb
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
220-280
Suction
Pressure
PSIG
40-24
220-280
240-290
260-330
300-370
330-410
40-26
50-27
50-27
54-28
60-29
Harvest Cycle
Discharge
Pressure
PSIG
150-180
Suction
Pressure
PSIG
70-90
1
160-180
160-180
180-200
200-220
220-250
70-90
70-90
80-100
90-115
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
253
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
Freeze Time
Water Temperature °F/°C
50/10
8.8-10.1
70/21
9.9-11.3
90/32
10.9-12.3
Harvest
Time 1
80/27
90/32
100/38
110/43
9.0-10.2
9.2-10.5
10.1-11.5
11.0-12.5
10.6-12.1
11.4-13.0
9.9-11.3
11.6-13.2
12.6-14.3
11.1-12.6
11.8-13.4
13.7-15.6
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
1430
1410
1380
1290
1175
70/21
1290
1270
1220
1130
1110
90/32
1200
1180
1140
1050
970
1 Based on average ice slab weight of 10.25 - 11.50lb
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
210-240
240-265
250-275
250-290
275-335
310-375
38-24
40-26
45-28
48-29
51-31
55-32
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
100-160
110-170
110-180
110-180
110-185
120-190
70-85
70-90
70-95
70-95
75-100
80-110
1 Suction pressure drops gradually throughout the freeze cycle
254
I1800 SERIES
I1800A
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 70/21 90/32
8.8-10.1
9.6-11.0
9.6-11.0
10.5-11.9
10.7-12.2
11.5-13.1
10.4-11.8
11.8-13.4
12.6-14.3
11.4-13.0
13.1-14.9
14.1-16.0
12.8-14.5
14.9-16.9
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
1840
1710
1600
1470
1330
70/21
1710
1560
1430
1300
1160
90/32
1590
1460
1350
1220
1080
1 Based on average ice slab weight of 13.20 - 14.80lb
2 230/50/1 is approximately 12% lower than 230/60/1
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
220-280
220-280
240-290
260-330
300-370
330-410
40-24
40-26
50-27
50-27
54-28
60-30
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
150-180
160-180
160-180
180-200
200-220
220-250
70-90
70-90
70-90
80-100
90-115
100-130
1 Suction pressure drops gradually throughout the freeze cycle
255
I1800W
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
70/21
9.8-11.2
90/32
11.0-12.5
8.9-10.2
9.0-10.3
9.1-10.4
9.2-10.5
10.0-11.3
10.1-11.5
10.3-11.7
10.5-11.9
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
Water Temperature °F/°C 1
50/10 70/21 90/32
70/21
80/27
90/32
100/38
110/43
1850
1820
1810
1780
1790
1680
1660
1640
1610
1590
1520
1510
1500
1490
1480
1 Based on average ice slab weight of 13.20 - 14.80lb
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
230-240
Suction
Pressure
PSIG
45-25
220-280
230-240
240-270
240-280
240-280
40-26
45-25
50-25
55-25
55-25
Harvest Cycle
Discharge
Pressure
PSIG
145-165
Suction
Pressure
PSIG
65-80
1
160-180
145-165
150-190
155-190
155-190
70-90
65-80
70-90
70-90
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
256
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
Freeze Time
Water Temperature °F/°C
50/10
9.2-10.5
70/21 90/32
10.1-11.5
10.0-12.4
Harvest
Time 1
80/27
90/32
100/38
110/43
9.6-11.0
10.6-12.1
11.5-13.0
10.2-11.6
11.2-12.8
12.2-13.9
11.0-12.5
12.1-13.8
13.3-15.1
11.9-13.6
13.2-15.0
14.7-16.6
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
1775
1705
1625
1525
1415
70/21
1635
1565
1495
1395
1295
90/32
1535
1465
1385
1285
1175
1 Based on average ice slab weight of 13.20 - 14.80lb
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Freeze Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
230-265
240-265
250-275
250-300
275-335
310-385
38-24
40-26
45-28
52-29
55-31
55-32
Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG 1
100-160
110-170
110-180
110-180
110-185
120-190
70-85
70-90
70-95
70-95
75-100
80-110
1 Suction pressure drops gradually throughout the freeze cycle
257
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258
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.
!
Warning
Always disconnect power before working on electrical circuitry.
Some components are wired differently on energy efficient machines. Please verify your model number
(page 21) 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)
259
I0300/I0450/I0500/I0520
Self Contained Air & Water-cooled - 1 Ph
260
I0320
Self Contained Air & Water-cooled - 1 Ph
261
I0500
Remote Air-cooled - 1Ph
262
I0600/I0850/I1000/I1200
Self Contained Air & Water-cooled - 1 & 3 Ph
263
I0600/I0850/I1000
Remote Condenser Air-cooled - 1 & 3 Ph
264
I1400/I1800
Self Contained Air & Water-cooled - 1 & 3 Ph
265
I1400/I1800
Remote Air-cooled - 1 & 3 Ph
266
Electronic Control Board
Bin Switches
Bin
Thermostat USB
Thermistors
T1
T2
T3
T4
Display
RS485
Bin LED
LuminIce
Water
Level
Probe
AuCS
Remote CVD
V
C
LPC
HPC1
HPC2
Dump Valve
Left Bin Switch Light
Right Bin Switch Light
Water Level Probe Light
Ice Thickness Probe Light
Display Light
Micro Light
Clean Light
Harvest Light
SL-1 Light
SL-2 Light
Transformer
RT Harvest
Compressor
Battery
Relay Lights
LT Harvest
Pump
Water
Ice
Thickness
Probe
Dump
HPC
CVD
Contactor
Water Inlet Valve
Fuse
Water Pump
Compressor
L1
L2
Not Used
Right Harvest Valve
Left Harvest Valve
Dump Valve
267
Refrigeration Tubing Schematics
SELF-CONTAINED AIR OR WATER -COOLED
I0300/I0320/I0520/I0450/I0500/I0600/I0850/I1000
T 4 T h e r m i s t o r
EVAPORATOR
HEAT
EXCHANGER
EXPANSION
VALVE
T 3 T h e r m i s t o r
COMPRESSOR
HOT GAS SOLENOID VALVE
X
STRAINER
T 2 T h e r m i s t o r
AIR OR WATER
CONDENSER
DRIER
RECEIVER
(WATER COOLED ONLY)
T 1 T h e r m i s t o r
I1400/I1800
T3 Thermistor T4 Thermistor
HEAT
EXCHANGER
268
DRIER
EXPANSION
VALVE
EVAPORATOR
COMPRESSOR
HARVEST
SOLENOID VALVE
STRAINER
HARVEST
SOLENOID VALVE
T2 Thermistor
EXPANSION
VALVE
RECEIVER
T1 Thermistor
CONDENSER
REMOTE CONDENSER MODELS
I0500/I0600/I0850/I1000
T4 Thermistor
EVAPORATOR
HEAT
EXCHANGER
EXPANSION
VALVE
T3 Thermistor
LIQUID
LINE
SOLENOID
VALVE
DRIER
STRAINER
COMPRESSOR
CHECK VALVE
T2 Thermistor
HARVEST PRESSURE
REGULATING VALVE
X
H.P.R. SOLENOID
VALVE
T1 Thermistor
CHECK VALVE
X
HOT GAS SOLENOID VALVE
REMOTE
CONDENSER
HEAD
PRESSURE
CONTROL
VALVE
B
R
C
RECEIVER
ACCESS
VALVE
RECEIVER
I1400/I1800
T4 Thermistor T3 Thermistor
HEAT
EXCHANGER
EXPANSION
VALVE
EXPANSION
VALVE
EVAPORATOR
LLSV
HARVEST
SOLENOID VALVE
COMPRESSOR
HARVEST
SOLENOID VALVE
STRAINER
DRIER CHECK VALVE
HPR VALVE
RECEIVER
ACCESS
VALVE
T2 Thermistor
RECEIVER
CHECK VALVE
T1 Thermistor
HEAD
PRESSURE
CONTROL
VALVE
REMOTE
CONDENSER
269
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270
© 2013 Manitowoc
Manitowoc Ice
2110 South 26th Street, P.O. Box 1720
Manitowoc, WI 54221-1720, USA
Ph: 920-682-0161 Fax: 920-683-7589
Visit us online at: www.manitowocice.com
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