Hoshizaki KM-520MRJ Instruction Manual

Hoshizaki KM-520MRJ Instruction Manual
Instruction Manual
Modular Crescent Cuber
Models
KM-350MAJ, MWJ
KM-520MAJ, MWJ, MRJ
KM-660MAJ, MWJ, MRJ
hoshizakiamerica.com
Issued: 7-23-2018
Revised: 4-17-2019
WARNING
Only qualified service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certified Service
Representative, visit www.hoshizaki.com. No installation or service should be
undertaken until the technician has thoroughly read this Instruction Manual.
Likewise, the owner/manager should not proceed to operate the appliance until the
installer has instructed them on its proper operation. Failure to install, operate, and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage. Proper installation is the responsibility of the installer. Product failure or
property damage due to improper installation is not covered under warranty.
Hoshizaki provides this manual primarily to assist qualified service technicians in the
installation, maintenance, and service of the appliance.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, send an e-mail message, or write to the Hoshizaki Technical
Support Department for assistance.
Phone: 1-800-233-1940; (770) 487-2331
Fax: 1-800-843-1056; (770) 487-3360
E-mail: techsupport@hoshizaki.com
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem.
2
IMPORTANT
This manual should be read carefully before the appliance is installed and operated.
Read the warnings and guidelines contained in this manual carefully as they
provide essential information for the continued safe use and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
CONTENTS
Important Safety Information.................................................................................................. 4
I. Specifications....................................................................................................................... 6
A. Electrical and Refrigerant Data...................................................................................... 6
1. KM-350M_J............................................................................................................... 6
2. KM-520M_J.............................................................................................................. 6
3. KM-660M_J.............................................................................................................. 7
B. Dimensions/Connections............................................................................................... 8
1. Air-Cooled Models (MAJ).......................................................................................... 8
2. Water-Cooled Models (MWJ).................................................................................... 9
3. Remote Models (MRJ)............................................................................................ 10
4. Remote Condenser Unit URC-5F (use with KM-520MRJ or KM-660MRJ).............11
II. Installation and Operating Instructions............................................................................. 12
A. Location....................................................................................................................... 12
B. Checks Before Installation............................................................................................ 13
C. How to Remove Panels................................................................................................ 13
D. Setup............................................................................................................................ 14
E. Electrical Connection................................................................................................... 15
F. Water Supply and Drain Connections........................................................................... 16
G. Installation of Remote Condenser Unit for Remote Models......................................... 20
1. Location.................................................................................................................. 20
2. Checks Before Installation...................................................................................... 21
3. Setup...................................................................................................................... 21
4. Line Set Size and Refrigerant Charge.................................................................... 21
5. Line Set Installation................................................................................................ 22
6. Electrical Connection.............................................................................................. 25
7. Stacking Remote Condenser Unit........................................................................... 26
H. Final Checklist.............................................................................................................. 27
I. Startup........................................................................................................................... 28
J. Bin Control Check and Setting...................................................................................... 30
III. Maintenance.................................................................................................................... 34
A. Maintenance Schedule................................................................................................. 34
B. Cleaning and Sanitizing Instructions............................................................................ 35
IV. Preparing the Appliance for Periods of Non-Use............................................................. 37
V. Disposal............................................................................................................................ 39
3
Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, damage to the appliance, or damage to property.
WARNING
Indicates a hazardous situation which could result in death or
serious injury.
NOTICE
Indicates a situation which could result in damage to the
appliance or property.
IMPORTANT
Indicates important information about the installation, use, and
care of the appliance.
WARNING
The appliance should be destined only to the use for which it has been expressly
conceived. Any other use should be considered improper and therefore dangerous.
The manufacturer cannot be held responsible for injury or damage resulting
from improper, incorrect, and unreasonable use. Failure to install, operate, and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage.
To reduce the risk of death, electric shock, serious injury, or fire, follow basic
precautions including the following:
• Only qualified service technicians should install and service the appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result
in death, electric shock, serious injury, fire, or damage.
• The appliance requires an independent power supply of proper capacity. See the
nameplate for electrical specifications. Failure to use an independent power supply
of proper capacity can result in a tripped breaker, blown fuse, damage to existing
wiring, or component failure. This could lead to heat generation or fire.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• Move the control switch to the "OFF" position and turn off the power supply before
servicing. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• To reduce the risk of electric shock, do not touch the control switch or mode switch
with damp hands.
• Do not make any alterations to the appliance. Alterations could result in electric
shock, serious injury, fire, or damage.
• The 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 or instruction concerning use of the
appliance by a person responsible for their safety.
4
WARNING, continued
• Children should be properly supervised around the appliance.
• Do not climb, stand, or hang on the appliance or allow children or animals to do so.
Serious injury could occur or the appliance could be damaged.
• Do not use combustible spray or place volatile or flammable substances near the
appliance. They might catch fire.
• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.
Additional Warning for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and
ground connection to the remote condenser unit are supplied from the icemaker.
Failure to properly ground the remote condenser unit could result in death or
serious injury.
• Wire routing (conduit) and disconnect (if required) must meet national, state, and
local electrical code requirements. Failure to meet these code requirements could
result in death, electric shock, serious injury, fire, or damage.
NOTICE
• Follow the water supply, drain connection, and maintenance instructions carefully to
reduce the risk of costly water damage.
• In areas where water damage is a concern, install in a contained area with a floor
drain.
• Install the appliance in a location that stays above freezing. Normal operating
ambient temperature must be within 45°F to 100°F (7°C to 38°C).
• Do not leave the appliance on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the appliance for
these occasions, follow the instructions in "IV. Preparing the Appliance for Periods
of Non-Use."
• Do not place objects on top of the appliance.
• The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.
5
I. Specifications
A. Electrical and Refrigerant Data
The rating label and nameplate provide electrical and refrigerant data. The rating label
can be seen by removing the front panel. The nameplate is located on the rear panel. For
certification marks, see the nameplate.
We reserve the right to make changes in specifications and design without prior notice.
1. KM-350M_J
Single Phase
Model Number
KM-350MAJ
AC Supply Voltage 115/60/1
Compressor
115V 7.5RLA 50LRA
Pump
120V 0.4FLA 10W
Fan
115V 1.0FLA 1/15 HP
Other
115V 0.15A
Maximum Fuse Size 15 AMPS
Max. HACR Breaker 15 AMPS
(USA Only)
Max. Circuit Breaker 15 AMPS
(Canada Only)
Minimum Circuit
15 AMPS
Ampacity
Design Pressure
HI-467PSI LO-250PSI
Refrigerant
404A 1 LB. 3.4 OZ.
KM-350MWJ
115/60/1
115V 6.8RLA 50LRA
120V 0.4FLA 10W
--- --- --115V 0.15A
15 AMPS
15 AMPS
15 AMPS
15 AMPS
HI-427PSI LO-250PSI
404A 11.6 OZ.
2. KM-520M_J
Model Number
AC Supply Voltage
Compressor
Pump
Fan
Other
Maximum Fuse Size
Max. HACR Breaker
(USA Only)
Max. Circuit Breaker
(Canada Only)
Minimum Circuit
Ampacity
Design Pressure
Refrigerant
KM-520MAJ
115/60/1
115V 8.9RLA 54.5LRA
120V 0.5FLA 10W
120V 1.0FLA 1/15 HP
115V 0.15A
20 AMPS
20 AMPS
Single Phase
KM-520MWJ
115/60/1
115V 7.8RLA 54.5LRA
120V 0.5FLA 10W
--- --- --115V 0.15A
20 AMPS
20 AMPS
KM-520MRJ
115/60/1
115V 8.4RLA 54.5LRA
120V 0.5FLA 10W
120V 3A MAX
115V 0.15A
20 AMPS
20 AMPS
20 AMPS
20 AMPS
20 AMPS
20 AMPS
20 AMPS
20 AMPS
HI - 467PSI LO - 250PSI
404A 1 LB 10.8 OZ.
HI - 427PSI LO - 250PSI
404A 12.7 OZ.
HI - 467PSI LO - 250PSI
R404A
Total Refrigerant Charge with
Hoshizaki Remote Condenser
Unit URC-5F: 4 LB. 2.7 OZ.
6
3. KM-660M_J
Model Number
AC Supply Voltage
Compressor
Pump
Fan
Other
Maximum Fuse Size
Max. HACR Breaker
(USA Only)
Max. Circuit Breaker
(Canada Only)
Minimum Circuit
Ampacity
Design Pressure
Refrigerant
KM-660MAJ
115/60/1
115V 13.5RLA 77LRA
120V 0.5FLA 10W
120V 1.0FLA 1/15 HP
115V 0.15A
20 AMPS
20 AMPS
Single Phase
KM-660WJ
115/60/1
115V 11.7RLA 77LRA
120V 0.5FLA 10W
--- --- --115V 0.15A
20 AMPS
20 AMPS
KM-660MRJ
115/60/1
115V 12.6RLA 77LRA
120V 0.5FLA 10W
120V 3A MAX
115V 0.15A
20 AMPS
20 AMPS
20 AMPS
20 AMPS
20 AMPS
20 AMPS
20 AMPS
20 AMPS
HI - 467PSI LO - 250PSI
404A 1 LB. 9.8 OZ.
HI - 467PSI LO - 250PSI
404A 15.2 OZ.
HI - 467PSI LO - 250PSI
R404A
Total Refrigerant Charge
with Hoshizaki Remote
Condenser Unit URC-5F:
R404A 4 LB. 2.7 OZ.
7
B. Dimensions/Connections
1. Air-Cooled Models (MAJ)
Units: mm [in.]
Rear
Side
Bottom
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The storage bin opening must
match the bottom opening as in the
illustration.
8
2. Water-Cooled Models (MWJ)
Units: mm [in.]
Rear
Side
Bottom
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The storage bin opening must
match the bottom opening as in the
illustration.
9
3. Remote Models (MRJ)
Units: mm [in.]
Side
Rear
Bottom
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The storage bin opening must
match the bottom opening as in the
illustration.
10
4. Remote Condenser Unit URC-5F (use with KM-520MRJ or KM-660MRJ)
Units: mm [in.]
NOTICE
Allow 24" (61 cm) clearance at front
and rear for proper air circulation and
ease of maintenance and/or service
should they be required.
Icemaker
Model
KM-520MRJ
KM-660MRJ
Top
URC-5F Heat of Rejection
AT 90°F (32°C)
WT 70°F (21°C)
6,200 BTU/h
8,100BTY/h
Rear
11
II. Installation and Operating Instructions
WARNING
• The icemaker must be installed in accordance with applicable national, state, and
local codes and regulations.
• Failure to install, operate, and maintain the icemaker in accordance with this
manual will adversely affect safety, performance, component life, and warranty
coverage and may result in costly water damage.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews
are securely in place after installation. Make sure that none have fallen into the
dispenser unit/ice storage bin.
A. Location
NOTICE
• The icemaker is not intended for outdoor use. Normal operating ambient
temperature must be within 45°F to 100°F (7°C to 38°C); Normal operating
water temperature must be within 45°F to 90°F (7°C to 32°C). Operation of the
icemaker, for extended periods, outside of these normal temperature ranges may
affect icemaker performance.
• The icemaker will not work at sub-freezing temperatures. To prevent damage
to the water supply line, drain the icemaker if the air temperature is going to go
below 32°F (0°C). See "IV. Preparing the Appliance for Periods of Non-Use."
• The icemaker should not be located next to ovens, grills, or other high heat producing
equipment.
• Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of
maintenance and/or service should they be required.
• The location should provide a firm and level foundation for the equipment.
12
B. Checks Before Installation
• Visually inspect the exterior of the shipping container and immediately report any
damage to the carrier. Upon opening the container, any concealed damage should also
be immediately reported to the carrier.
• Remove the shipping carton, tape, and packing material. If any are left in the icemaker,
it will not work properly.
• See the nameplate on the rear panel, and check that your voltage supplied corresponds
with the voltage specified on the nameplate.
• Remove the panels to prevent damage when installing the icemaker. See "II.C. How to
Remove Panels."
• Remove the package containing the accessories.
• Remove the protective plastic film from the panels. If the icemaker is exposed to the sun
or to heat, remove the film after the icemaker cools.
• Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blade (if applicable) turns freely.
• Check that the compressor is snug on all mounting pads.
• The icemaker can be installed on a dispenser unit or ice storage bin. The ice storage
bins listed below are recommended.
Model Number Bin Width
Recommended Hoshizaki Ice Storage Bin
KM-350M_J
22" or Wider B-300 Series
KM-520M_J
KM-660M_J
For further options, contact your local Hoshizaki distributor.
• NOTICE! Remote models must be connected to an appropriate remote condenser
unit. The remote condenser units listed below are recommended. Connection to a
different remote condenser unit will void the warranty unless Hoshizaki approves
a different remote condenser unit for your specific application. For further
details, contact your local Hoshizaki distributor.
Model Number Recommended Hoshizaki Remote Condenser Unit
KM-520MRJ
URC-5F
KM-660MRJ
C. How to Remove Panels
See Fig. 1
Front Insulation Panel
• Front Panel: Remove the screw. Lift up and
towards you.
• Top Panel: Lift up at front slightly, push rearward
and lift off.
• Right Side Panel: Remove the screw. Slide forward
slightly and lift off.
• Front Insulation Panel: Lift up slightly and pull
towards you.
• Base Cover: Lift up slightly and pull towards you.
13
Top Panel
Front
Panel
Screw
Base Cover Right Side Panel
Model Shown: KM-520MAJ
Fig. 1
D. Setup
1. Dispenser Unit/Ice Storage Bin and Icemaker Setup
WARNING
• The installer must ensure the dispenser unit/ice storage bin is compatible with
the icemaker, and the dispenser unit/ice storage bin and icemaker are properly
attached and secured.
• Do not allow top kits to interfere with the bin control lens sensing area or the
icemaker will not operate properly.
1) If mounting the icemaker on top of a dispenser unit, follow the dispenser unit's setup
procedure. If mounting the icemaker on top of an ice storage bin, unpack the ice storage
bin and attach the 4 adjustable legs provided (bin accessory) to the bottom of the ice
storage bin.
2) Position the dispenser unit/ice storage bin in its permanent location.
3) If required, install an adapter kit or top kit. Contact your local Hoshizaki distributor for
recommendations.
4) Level the dispenser unit/ice storage bin in both the left-to-right and front‑to‑rear
directions. If using an ice storage bin, adjust the ice storage bin legs to level.
5) Place the icemaker on top of the dispenser unit/ice storage bin.
6a) Dispenser Unit: Follow the dispenser unit, adapter kit, or top kit instructions for
securing the icemaker. If no instructions are available, secure the icemaker using the
mounting brackets provided. Rotate the mounting brackets so that they fit flush to the
dispenser unit. See Fig. 2a. Secure the mounting brackets to the icemaker with the bolts
provided. Secure the mounting brackets to the dispenser unit with self‑tapping screws
(not provided). NOTICE! Use care to avoid damage to dispenser unit components
when attaching the mounting brackets. For dispenser unit bin control setting see
"II.J. Bin Control Check and Setting."
6b) Ice Storage Bin: Follow the ice storage bin, adapter kit, or top kit instructions for
securing the icemaker. If no instructions are available, secure the icemaker using the
2 mounting brackets and the bolts provided. See Fig. 2b.
Icemaker
Icemaker
Bolts
Mounting
Brackets
Bolts
Fig. 2a
Fig. 2b
Dispenser
Unit
Self-Tapping
Screws
(Not Provided)
14
Ice
Storage
Bin
Mounting
Brackets
E. Electrical Connection
WARNING
For All Models
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result
in death, electric shock, serious injury, fire, or damage.
• The icemaker requires an independent power supply of proper capacity. See
the nameplate for electrical specifications. Failure to use an independent power
supply of proper capacity can result in a tripped breaker, blown fuse, damage to
existing wiring, or component failure. This could lead to heat generation or fire.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• Electrical connection must be made in accordance with the instructions on the
"WARNING" tag, provided with the pig tail leads. See Fig. 3.
Additional Warnings for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. Power supply and
ground connection to the remote condenser unit are supplied from the icemaker.
See "II.G.6. Electrical Connection." Failure to properly ground the remote
condenser unit could result in death or serious injury.
• To reduce the risk of electric shock, make all remote condenser unit connections
before connecting the icemaker power supply.
NOTICE
On remote models, the appliance must have power for a minimum of 4 hours prior
to startup to prevent compressor damage.
• Usually an electrical permit and services of
a licensed electrician are required.
KM-350M_J
KM-520M_J
KM-660M_J
• The maximum allowable voltage variation is
±10 percent of the nameplate rating.
ELECTRICAL CONNECTION
• The opening for the power supply
connection is 7/8" DIA to fit a 1/2" trade
size conduit.
THIS UNIT MUST BE GROUNDED
Failure to properly ground or wire
this unit could result in death,
serious injury, or severe damage
to the icemaker. The white lead
must be connected to the neutral
conductor of the power source.
See diagram below.
115/60/1
JUNCTION BOX
L
BLACK
115V
• On 115/60/1 models, the white lead must
be connected to the neutral conductor of
the power source. NOTICE! Miswiring
may result in severe damage to the
icemaker.
WARNING
N
WHITE
4A5730-010
Fig. 3
15
F. Water Supply and Drain Connections
See Figs. 4 through 6
WARNING
Water supply and drain connections must be installed in accordance with applicable
national, state, and local regulations.
NOTICE
• Normal operating water temperature should be within 45°F to 90°F (7°C to
32°C). Operation of the appliance, for extended periods, outside of this normal
temperature range may affect appliance performance.
• Water supply pressure must be a minimum of 10 PSIG and a maximum of
113 PSIG. If the pressure exceeds 113 PSIG, the use of a pressure reducing valve
is required.
• To prevent damage to the appliance, do not operate the appliance when the water
supply is off, or if the pressure is below 10 PSIG. Do not run the appliance until
the proper water pressure is reached.
• External filters, strainers, or softeners may be required depending on water quality.
Contact your local Hoshizaki Certified Service Representative or local Hoshizaki
distributor for recommendations.
• A plumbing permit and services of a licensed plumber may be required in some areas.
• The icemaker drain line, dispenser unit/ice storage bin drain line, and water-cooled
condenser drain line (if applicable) must be run separately. The condensation drain line
can be connected to the icemaker drain line or can be run separately.
• Drain lines must have 1/4" fall per foot (2 cm per 1 m) on horizontal runs to get a good
flow. A vented tee connection is also required for proper flow.
• Drain lines should not be piped directly to the sewer system. An air gap of a minimum of
2 vertical inches (5 cm) should be between the end of the drain pipes from the icemaker
and condensation drain, dispenser unit/ice storage bin, and water-cooled condenser
(if applicable) and the floor drain.
16
1. Icemaker
Icemaker Water
Supply Inlet
1/2" Female Pipe
Thread (FPT)
Minimum Icemaker
Water Supply Line Size
1/4" Nominal ID
Copper Water Tubing or
Equivalent
Icemaker Drain
Outlet
3/4" Female Pipe
Thread (FPT)
Minimum Icemaker
Drain Line Size
3/4" Nominal
ID Hard Pipe or
Equivalent
Condensation
Drain Outlet
3/8" OD Hard
Tube
• An icemaker water supply line shut-off valve and drain valve must be installed.
• Be sure there is sufficient extra water supply line and drain line for the appliance to be
pulled out for service.
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Icemaker
Water Supply
Inlet
1/2" FPT
Shut-Off Valve
Drain Valve
Icemaker
Drain Outlet
3/4" FPT
Icemaker
Condensation
Drain Outlet
3/8" OD Hard Tube
Bin Drain Outlet
3/4" FPT
Vent Tube
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
Separate piping to approved
drain. Leave a 2" (5 cm)
vertical air gap between the
end of each pipe and the
drain.
2" (5 cm) air gap
Fig. 4
Air-Cooled and Remote Models
Model Shown:
KM-520MRJ
Floor Drain
17
2. Water-Cooled Condenser
a) Connection to an Open Drain System
Condenser Water
Supply Inlet
1/2" Female Pipe
Thread (FPT)
Minimum Condenser
Water Supply Line Size
1/4" Nominal ID Copper
Water Tubing or Equivalent
Condenser Drain
Outlet
3/8" Female Pipe
Thread (FPT)
Minimum Condenser
Drain Line Size
1/4" Nominal ID Hard Pipe
or Equivalent
• A condenser water supply line shut-off valve and drain valve must be installed.
• In some areas, a back flow preventer may be required in the cooling water circuit.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser drain outlet temperature
must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker installation
is complete, confirm the condenser drain outlet temperature 5 minutes after a freeze
cycle starts. If the condenser drain outlet temperature is not in the proper range, use a
flat blade screwdriver to rotate the adjustment screw on the water‑regulating valve until
the temperature is in the proper range (rotate counterclockwise to raise temperature or
clockwise to lower temperature).
Icemaker Water
Supply Inlet
1/2" FPT
Condenser Water
Supply Inlet
1/2" FPT
Vent Tube
Icemaker
Shut-Off Valve
Condenser
Drain Outlet
3/8" FPT
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Drain Valve
Icemaker
Drain Outlet
3/4" FPT
Bin Drain Outlet
3/4" FPT
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
Icemaker
Condensation
Drain Outlet
Separate piping to approved
3/8" OD Hard Tube drain. Leave a 2" (5 cm)
vertical air gap between the
end of each pipe and the
drain.
Vent Tube
Ice
Storage
Bin
Minimum 1/4" Nominal ID
Hard Pipe or Equivalent
2" (5 cm) air gap
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Fig. 5
Model Shown:
KM-520MWJ
Water-Cooled Models
Connection to an Open Drain System
18
Floor
Drain
b) Connection to a Closed Loop System
Condenser Water
Supply Inlet
1/2" Female Pipe
Thread (FPT)
Minimum Condenser
Water Supply Line Size
1/4" Nominal ID Copper
Water Tubing or Equivalent
Condenser
Return Outlet
3/8" Female Pipe
Thread (FPT)
Minimum Condenser
Return Line Size
1/4" Nominal ID Copper
Water Tubing or Equivalent
• Shut-off valves and drain valves must be installed at both the condenser water supply inlet
and condenser return outlet.
• Minimum water flow to the condenser is 4 GPM.
• The pressure differential between the condenser water supply inlet and condenser return
outlet must be no less than 10 PSIG.
• When using a glycol blend, the solution mixture should be less than 30% glycol.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser return outlet
temperature must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker
installation is complete, confirm the condenser return outlet temperature 5 minutes after a
freeze cycle starts. If the condenser return outlet temperature is not in the proper range,
use a flat blade screwdriver to rotate the adjustment screw on the water‑regulating valve
until the temperature is in the proper range (rotate counterclockwise to raise temperature
or clockwise to lower temperature).
Icemaker Water
Supply Inlet
1/2" FPT
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Icemaker
Condensation
Drain Outlet
3/8" OD Hard Tube
Icemaker
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Shut-Off Valve
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Drain Valve
Icemaker
Drain Outlet
3/4" FPT
Ice
Storage
Bin
Bin Drain Outlet
3/4" FPT
Vent Tube
Be sure there is sufficient
extra water supply line and
drain line for the appliance to
be pulled out for service.
Separate piping to approved
drain. Leave a 2" (5 cm)
vertical air gap between the
end of each pipe and the
drain.
2" (5 cm) air gap
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Fig. 6
Model Shown:
KM-660MWJ
Water-Cooled Models
Connection to a Closed Loop System
19
Floor Drain
G. Installation of Remote Condenser Unit for Remote Models
WARNING
• Installation of remote condenser unit must be performed by properly trained and
EPA-certified service personnel.
• The remote condenser unit must be installed in accordance with applicable
national, state, and local codes and regulations.
• Failure to install the remote condenser unit within these guidelines may adversely
affect safety, performance, component life, and warranty coverage.
• Power supply and ground wire to the remote condenser unit are supplied from the
icemaker. For details, see section "II.G.6. Electrical Connection."
1. Location
NOTICE
• The remote condenser unit is intended for outdoor use. Normal operating ambient
temperature must be within -20°F to +122°F (-29°C to +50°C). Operation of the
remote condenser unit, for extended periods, outside of this normal temperature
range may affect appliance performance.
• The maximum line length for the standard line sizes and refrigerant charge is
66' (20 m). With larger line sizes and/or additional refrigerant, the maximum line
length is 100' (30.5 m). For details, see "II.G.4 Line Set Size and Refrigerant
Charge."
• The maximum vertical distance between the remote condenser unit and the
icemaker is 33' (10 m) above or 10' (3 m) below the icemaker. These distances
are measured fitting to fitting. See Fig. 7.
The remote condenser unit must be positioned in a permanent site under the following
guidelines:
• A firm and flat site.
• A dry and well ventilated area with 24" (61 cm) clearance at front and rear for proper air
circulation and ease of maintenance and/or service should they be required. See Fig. 8.
Icemaker
Remote
Condenser
Unit
Max.
33'
(10 m)
Icemaker
Min. 24" (61 cm) Clearance
Max.
10'
(3 m)
Air
Air
Service Loop
Service Loop
Fig. 7
Remote
Condenser
Unit
20
Fig. 8
2. Checks Before Installation
1) Remove the shipping carton, tape, and packing material.
2) Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blades move freely.
3. Setup
1) Assemble 2 sets of legs using the legs, bolts, and
nuts provided. See Fig. 9.
2) Position 1 of the plates provided between a set of
legs and the remote condenser unit, then secure
the legs to the remote condenser unit with the
bolts and nuts provided. Repeat on the other side
with the remaining set of legs.
3) The bottom of each leg has a mounting hole.
Secure the legs to the permanent site with 4 bolts
(not included).
4. Line Set Size and Refrigerant Charge
Nut
Plate
Nut
Leg
Fig. 9
Bolt with Split Lock
Washer and Flat
Washer
NOTICE
The icemaker, line set, and remote condenser unit must contain the same type
of refrigerant. Mixing of refrigerants will result in improper operation and possible
damage to the refrigeration system.
Hoshizaki
Icemaker
KM-520MRJ
KM-660MRJ
Line Set Size and Refrigerant Charge
Line Set
Greater than 66' (20 m)
Hoshizaki Line Set
Up to 66' (20 m)
Maximum 100' (30.5 m)
Remote
Condenser Liquid Discharge Charge
Liquid Discharge Charge Adjustment
Unit
Line
Line
Adjustment Line
Line
(R-404A)
URC-5F
1/4"
3/8" OD
Not
3/8"
1/2" OD
Add 16.5 oz. (468 g)
OD
Applicable OD
to compensate for
larger diameter line
sizes, then add
0.4 oz. for each foot
over 66 feet (40 g
for each meter over
20 m). Write new total
charge on icemaker's
rating label.
21
5. Line Set Installation
Precharged factory line sets, available as optional equipment from Hoshizaki America,
are recommended. For details, see "II.G.5.a) Factory Line Set Installation." Field
fabricated line sets are allowed. For details, see "II.G.5.b) Field Fabricated Line Set
Installation."
a) Factory Line Set Installation
1) Route the factory line set (see "II.G.4 Line Set Size and Refrigerant Charge" for
details) from the remote condenser unit to the icemaker. Leave a service loop behind
the icemaker to allow the icemaker to be pulled out for service. See Fig. 10. Factory
fabricated line sets are precharged and do not need to be evacuated. If the line set is
too long or too short, see "II.G.5.a)(1) Factory Line Set Modification."
NOTICE
• Ensure that there are no traps and no kinks in the line set. The service loop is not
considered an oil trap.
• Do not coil extra line set.
2) Connect the refrigerant lines to the appropriate male fittings on the remote condenser
unit first and then at the icemaker. Make a proper connection as follows:
a. Remove the protective covers from the male fitting and female coupling.
b. Apply Polyol Ester (POE) refrigerant oil or Parker Super O Lube to the entire male
fitting, including O‑ring, diaphragm, and threads before making the connection.
See Fig. 11. NOTICE! Do not use thread sealant on the fittings. Use POE
refrigerant oil or Parker Super O Lube only. Couplings are one-time use only.
c. Make sure the male fitting and female coupling are properly aligned, then start the
connection by hand to ensure that it is not cross threaded.
d. Place a backup wrench on the back of the female coupling, then tighten the
connection with a wrench until it is tight. At this point, the nut has covered most of
the threads on the male fitting. NOTICE! Failure to use a backup wrench may
result in damage to the line set and possible refrigerant leaks.
e. Mark a reference line on the female coupling and the remote condenser unit or
icemaker panel. Using a backup wrench on the back of the female coupling, tighten
the six-sided nut of the female coupling an additional 1/6 turn. See Fig. 12.
NOTICE! Confirm connection is free of leaks.
3) If you lengthened the line set as outlined in "II.G.5.a)(1) Factory Line Set Modification"
and it exceeds 66' (20 m), see "II.G.4. Line Set Size and Refrigerant Charge" for proper
charging of the appliance.
22
(1) Factory Line Set Modification
1) Recover the line set charge through the Schrader access ports on the Parker quick
connect couplings and store it in an approved container. Do not discharge the
refrigerant into the atmosphere. Remove the extra line set length or add extra tubing.
When adding extra tubing, insulate the additional copper tubes separately.
2) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace
of refrigerant to the lines through the Schrader access ports on the Parker quick
connect couplings (if using an electronic leak detector), and then raise the pressure
using nitrogen gas (140 PSIG). WARNING! Do not use R-404A as a mixture with
pressurized air for leak testing.
3) Evacuate through the Schrader access ports on the Parker quick connect couplings and
charge with R-404A refrigerant vapor to a pressure of 15 to 30 PSIG. Go to step 2 in
"II.G.5.a) Factory Line Set Installation."
b) Field Fabricated Line Set Installation
1) Route the copper tube liquid line and copper tube discharge line (see "II.G.4 Line
Set Size and Refrigerant Charge" for details) from the remote condenser unit to the
icemaker. Leave a service loop behind the icemaker to allow the icemaker to be pulled
out for service. See Fig. 11.
NOTICE
• Ensure that there are no traps and no kinks in the line set. The service loop is not
considered an oil trap.
• Do not coil extra line set. Fabricate the line set to the proper length.
2) Insulate the two copper tubes separately.
3) Install Parker quick connect couplings on each end. OS-QUICK, a universal quick
connect coupling kit available as optional equipment from Hoshizaki America, is
recommended. NOTICE! Before brazing, remove the Schrader valve core from the
access port. When brazing, protect the coupling by using a wet cloth to prevent
the coupling from overheating. Do not use silver alloy or copper alloy containing
arsenic.
4) Allow the coupling to cool, then replace the Schrader valve core.
5) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace
of refrigerant to the lines through the Schrader access ports on the Parker quick
connect couplings (if using an electronic leak detector), and then raise the pressure
using nitrogen gas (140 PSIG). WARNING! Do not use R-404A as a mixture with
pressurized air for leak testing.
6) Evacuate through the Schrader access ports on the Parker quick connect couplings and
charge with R-404A refrigerant vapor to a pressure of 15 to 30 PSIG.
23
7) Connect the refrigerant lines to the appropriate male fittings on the remote condenser
unit first and then at the icemaker. Make a proper connection as follows:
a. Remove the protective covers from the male fitting and female coupling.
b. Apply Polyol Ester (POE) refrigerant oil or Parker Super O Lube to the entire male
fitting, including O‑ring, diaphragm, and threads, before making the connection.
See Fig. 12. NOTICE! Do not use thread sealant on the fittings. Use POE
refrigerant oil or Parker Super O Lube only. Couplings are one-time use only.
c. Make sure the male fitting and female coupling are properly aligned, then start the
connection by hand to ensure that it is not cross threaded.
d. Place a backup wrench on the back of the female coupling, then tighten the
connection with a wrench until it is tight. At this point, the nut has covered most of
the threads on the male fitting. NOTICE! Failure to use a backup wrench may
result in damage to the line set and possible refrigerant leaks.
e. Mark a reference line on the female coupling and the remote condenser unit or
icemaker panel. Using a backup wrench on the back of the female coupling, tighten
the six-sided nut of the female coupling an additional 1/6 turn. See Fig. 12.
NOTICE! Confirm connection is free of leaks.
8) If the line set exceeds 66' (20 m), see "II.G.4. Line Set Size and Refrigerant Charge" for
proper charging of the appliance.
Remote Condenser Unit
Icemaker
Male Fitting
Female Coupling
Discharge Line (Insulated)
See "II.G.4 Line Set Size and
Refrigerant Charge" for details.
Liquid Line (Insulated)
See "II.G.4 Line Set Size and
Refrigerant Charge" for details.
Service Loop
Fig. 10
DO NOT USE
THREAD SEALANT
Male Fitting
Brush
Fig. 11
Threads
Diaphragm Apply POE Oil or
Parker Super O Lube
to Entire Male Fitting
O-Ring
Reference
Line
Fig. 12
Wrench
After Tight, Tighten an
Additional 1/6 Turn
Backup
Wrench
1/6
Turn
Backup
Wrench
24
Wrench
6. Electrical Connection
WARNING
• Electrical connection must meet national, state, and local electrical code
requirements. Failure to meet these code requirements could result in death,
electric shock, serious injury, fire, or damage.
• To reduce the risk of electric shock, make all remote condenser unit connections
before connecting the icemaker power supply.
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. Install a ground wire
from the icemaker fan motor junction box to the remote condenser unit junction
box. Use wire of an appropriate gage and outdoor rating. Failure to properly
ground the remote condenser unit could result in death or serious injury.
• Install line and neutral wires from the fan motor leads in the icemaker fan motor
junction box to the leads in the remote condenser unit junction box. Use wire of an
appropriate gage and outdoor rating.
• Do not connect the fan motor leads in the icemaker to incoming power source. Do
not connect the fan motor leads in the icemaker together. Do not allow the leads
to contact the junction box walls.
• Do not connect the remote condenser unit to an external power source.
NOTICE
On remote models, the appliance must have power for a minimum of 4 hours prior
to startup to prevent compressor damage.
• Usually an electrical permit and services of a licensed electrician are required.
• The opening for the power supply connection is 7/8" DIA to fit a 1/2" trade size conduit.
1) Remove the remote condenser unit louver panel. See Fig. 13.
2) Remove the icemaker fan motor junction box cover. Remove the remote condenser unit
junction box cover.
Remote Condenser Unit
Screws
Icemaker
Junction Box
Cover
Fan Motor Junction
Box Cover
Louver Panel
Fig. 13
Screw
25
3) Install a ground wire from the icemaker fan motor junction box to the remote condenser
unit junction box. Use wire of an appropriate gage and outdoor rating.
4) Install line and neutral wires from the fan motor leads in the icemaker fan motor junction
box to the leads in the remote condenser unit junction box. Use wire of an appropriate
gage and outdoor rating.
5) Replace the junction box covers and the louver panel in their correct positions.
7. Stacking Remote Condenser Unit
1) Install the lower remote condenser unit as described earlier in this section.
2) Place the upper remote condenser unit on top of the lower remote condenser unit. See
Fig. 14.
3) Secure the upper remote condenser unit to the lower remote condenser unit with the
4 screws provided.
4) Install refrigerant lines and make electrical connection as described earlier in this
section.
Upper Remote
Condenser Unit
Screws
Screws
Lower Remote
Condenser Unit
Fig. 14
26
H. Final Checklist
WARNING
CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews
are securely in place after installation. Make sure that none have fallen into the
dispenser unit/ice storage bin.
1) Is the icemaker level?
2) Is the icemaker in a site where the ambient temperature is within 45°F to 100°F (7°C to
38°C) and the water temperature within 45°F to 90°F (7°C to 32°C) all year around?
3) Is there at least 6" (15 cm) clearance at rear, sides, and top of the icemaker?
4) Have the shipping carton, tape, and packing material been removed from the icemaker?
Is the cube guide in the correct position?
5) Have all electrical and water connections been made? Do electrical and water
connections meet applicable national, state, and local code and regulation
requirements?
6) Has the power supply voltage been checked or tested against the nameplate rating?
Has a proper ground been installed to the icemaker? On remote models, has a proper
ground also been installed to the remote condenser unit?
7) Are the water supply and drain lines sized as specified? Are the water supply line
shut‑off valve(s) and drain valve(s) installed? Has the water supply pressure been
checked to ensure a minimum of 10 PSIG and a maximum of 113 PSIG?
8) Is the compressor snug on all mounting pads? Have the refrigerant lines been checked
to make sure they do not rub or touch other lines or surfaces? Has the fan blade
(if applicable) been checked to make sure it turns freely?
9) On remote models:
• Is the line set sized as specified, insulated, tightened, and free of leaks and kinks?
• If the line set exceeds 66' (20 m), has the line set size (if applicable) and charge been
adjusted as specified?
• Has the appliance power supply been on for a minimum of 4 hours?
• Is the remote condenser unit in a site where the ambient temperature is within
-20°F to +122°F (-29°C to +50°C) all year around?
• Is there at least 24" (61 cm) clearance around the remote condenser unit?
10) Are all components, fasteners, and thumbscrews securely in place?
11) Has the end user been given the instruction manual, and instructed on how to operate
the appliance and the importance of the recommended periodic maintenance?
12) Has the end user been given the contact information of an authorized service agent?
13) Has the warranty registration been completed and submitted to the factory?
27
I. Startup
WARNING
All parts are factory-adjusted. Improper adjustments may adversely affect safety,
performance, component life, and warranty coverage.
NOTICE
• If the icemaker is turned off, wait for at least 3 minutes before restarting the
icemaker to prevent damage to the compressor.
• To prevent damage to the water pump seal, do not leave the control switch in the
"PUMP" position for extended periods when the water tank is empty.
• At startup, confirm that all internal and external connections are free of leaks.
Additional Notice for Remote Models
• The icemaker must have power for a minimum of 4 hours prior to startup to
prevent compressor damage.
1) Open the water supply line shut-off valve(s).
2) If not already removed, remove the front panel. See Fig. 15.
3) Move the mode switch on the control box to the "ICE" position, then move the control
switch to the "ON" position. Replace the front panel, then turn on the power supply, and
allow the icemaker to operate. Note: If the icemaker fails to start, see "II.J. Bin Control
Check and Setting."
Front Panel
Control Switch
Mode Switch
Icemaker
Fig. 15
4) Allow the icemaker to operate for 10 min.
5) After 10 min., turn off the power supply, then remove the front panel.
6) Move the control switch to the "OFF" position, then remove the base cover and
disconnect the rear pump tubing connection to drain the water tank. See Fig. 16.
Icemaker
Control Switch
Mode Switch
Water Tank
Base Cover
Fig. 16
28
Disconnect This
End of Pump Tubing
to Drain Water Tank
7) After the water tank has drained, reconnect the pump tubing.
8) Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly
after cleaning.
9) Go to "II.J. Bin Control Check and Setting" and confirm bin control controller setting
and bin control operation. WARNING! When used on dispenser units, the ice level
must be set according to "II.J. Bin Control Check and Settings" to help prevent
icemaker movement, water leakage, or ice overflow. Do not increase ice level
above the recommended setting.
10) After completing bin control check and confirming bin control controller setting, replace
the base cover in its correct position. Move the control switch to the "ON" position.
Replace all panels in their correct positions.
11) Turn on the power supply to start the automatic icemaking process.
12) On water-cooled models, confirm proper condenser drain outlet/return outlet
temperature as outlined in "II.F.2. Water‑Cooled Condenser."
29
J. Bin Control Check and Setting
An ultrasonic sensor is used as the bin control to control the level of ice in the
dispenser unit/ice storage bin. The bin control controller setting must be set to match the
application to avoid possible icemaker movement, water leakage, or ice overflow.
WARNING
• Make sure the icemaker has been installed as outlined in this manual and that the
water supply is on.
• Improper adjustment may adversely affect safety, performance, component life,
and warranty coverage.
• On dispenser unit applications, do not increase ice level above the recommended
setting listed below. Higher ice levels could result in icemaker movement, water
leakage, or ice overflow.
NOTICE
Do not allow top kits or top kit risers (if applicable) to interfere with the bin control
lens sensing area or the icemaker will not operate properly.
1) Make sure that the power supply is off. If not already removed, remove the front, top,
and right side panels. Then remove the base cover. Note: To access the control box
from the front, remove the 2 remaining control box mounting screws, then slide the
control box forward and rotate the control box for access. See Fig. 17.
Control Box
Control Box
Remaining 2 Control
Box Mounting Screws
Fig. 17
2) Determine the setting required for your application as detailed below.
For Standard Ice Storage Bin application, no adjustment needed, continue to step 3.
See Fig. 18.
For Hoshizaki DB and DM Dispenser Units, adjust the bin control controller to
setting 2, then continue to step 3. See Fig. 18.
For Coca-Cola Freestyle® Dispenser Unit, adjust the bin control controller to setting 3,
then continue to step 3. See Fig. 18.
For Non-Hoshizaki Dispenser Units, determine the full bin level. Measure from the
bottom of the compressor base (bin control lens) to the preferred full bin level of ice;
refer to the dispenser instruction manual and see Fig. 19. Set the bin control controller
to the setting appropriate to the distance measured, then continue to step 3.
NOTICE! The ice level must be lower than the top of the dispenser unit.
Also, be sure the top kit or top kit riser (if applicable) are clear from the bin
control lens sensing area.
Note: See the tables in Fig. 18 and 19 for ice detection distances.
Icemaker restarts when ice level is 4 in. (102 mm) below ice detection level.
30
For Standard Ice Storage Bins, Hoshizaki DB and DM Dispenser Units, and
Coca-Cola Freestyle® Dispenser Units
Application
Standard Ice Storage Bins
Hoshizaki DB and DM Dispensers
Coca-Cola Freestyle® Dispensers
Optional Setting
Bin Control Ice Level Settings
Bin Control Setting Ice Detection Distance From Bin Control Lens
1
254 mm (10")
(Factory Default)
Do not adjust dispensers to this setting.
2
305 mm (12")
3
406 mm (16")
4
508 mm (20")
5
610 mm (24")
WARNING
Confirm that the final ice level location does not allow for icemaker movement,
water leakage, or ice overflow.
Icemaker
Icemaker
Bin Control
Lens
Bin Control
Lens
Setting #1
Setting #2
Setting #3
Setting #4
Setting #5
Standard Ice
Storage Bin
Setting #1
Setting #2
Setting #3
Setting #4
Setting #5
Hoshizaki DB-200H
Dispenser Unit
Model Shown:
KM-520MAJ with DB-200H
Model Shown:
KM-660MAJ with B-300SF
Bin Control
Controller
Factory Default for Standard
Ice Storage Bins
WARNING! Do not use this
setting with dispensers.
Recommended Setting for
Hoshizaki DB and DM Dispensers
Recommended Setting for Coca-Cola
Freestyle® Dispensers
Turn dial to adjust to proper setting
Fig. 18
31
For Non-Hoshizaki Dispenser Units
Bin Control Ice Level Settings
Ice Detection Distance From Bin Control Lens
Do not adjust dispensers to this setting. 254 mm (10")
Bin Control Setting
1
(Factory Default)
2
3
4
5
305 mm (12")
406 mm (16")
508 mm (20")
610 mm (24")
WARNING
Confirm that the final ice level location does not allow for icemaker movement,
water leakage, or ice overflow.
NOTICE
The ice level must be lower than the top of the dispenser unit. Also, be sure the top
kit or top kit riser (if applicable) are clear from the bin control lens sensing area.
Icemaker
Bin Control Lens
Bin Control
Lens
Full Bin Measured Distance
(Shutdown Distance)
Top Kit
Setting #1
Setting #2
Setting #3
Setting #4
Setting #5
Preferred Full Bin Level of Ice (Shutdown Position)
Icemaker Restart Level
(4" (102 mm) below preferred
full bin level of ice)
Non-Hoshizaki
Dispenser Unit
Bin Control
Controller
Turn dial to adjust to setting
that matches Full Bin Measured
Distance (Shutdown Distance)
Factory Default for Standard
Ice Storage Bins
WARNING! Do not use this
setting with dispensers.
Fig. 19
32
3) Move the mode switch on the control box to the "ICE" position, then move the control
switch to the "ON" position. Turn on the power supply, and allow the icemaker to operate.
4) Confirm the control board "BC OPEN/CLOSED" LED is off (bin empty) and the bin
control controller "LED 1" LED is on (bin empty). See Fig. 20.
Ice Level in Bin
Control Board "BC
OPEN/CLOSED" LED
Bin Control Controller
"LED 1" LED
Empty
OFF
ON
Full
ON
OFF
BC OPEN/
CLOSED LED
LED 1
Factory Setting
Fig. 20
Control Board
Bin Control Controller
5) If the bin control controller LED 1 is off (indicating a full bin), the control board BC
OPEN/CLOSED LED should be on (indicating a full bin). If so, correct any interference
from the top kit or top kit riser (if applicable).
6) Move the control switch to the "OFF" position, wait 2 min., then move the control switch
to the "ON" position. 1 min. fill cycle begins. Place an object 5" to 7" (127 to 178 mm)
away from the bin control lens. See Fig. 21. 15 sec. later, the icemaker shuts down.
Remove the object from the bin control lens. 30 sec. later, the icemaker restarts.
For bin control shutdown times per cycle, see the table below.
Cycle at Bin
Control Activation Shutdown
1 min. Fill Cycle
15 sec. after activation.
Harvest Cycle
If engaged 15 sec. or longer, at the end of harvest cycle.
Freeze Cycle
15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle
protection timer terminates. Otherwise, at the end of the next harvest cycle.
Control Switch
Icemaker
Mode Switch
Compressor Base
Bin Control Lens
Fig. 21
7) Once the icemaker restarts, move the control switch to the "OFF" position, then turn off
the power supply.
8) Return to step 10 in "I. Startup."
33
III. Maintenance
The appliance must be maintained in accordance with the instruction manual and labels
provided. Consult with your local Hoshizaki Certified Service Representative about
maintenance service.
WARNING
• Only qualified service technicians should service the appliance.
• To reduce the risk of electric shock, do not touch the control switch or mode switch
with damp hands.
• Move the control switch to the "OFF" position and turn off the power supply before
servicing. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after any maintenance is done to the appliance. Make sure that
none have fallen into the dispenser unit/ice storage bin.
A. Maintenance Schedule
The maintenance schedule below is a guideline. More frequent maintenance may be
required depending on water quality, the appliance's environment, and local sanitation
regulations.
Maintenance Schedule
Frequency Area
Task
Daily
Bi-Weekly
Monthly
Clean the ice scoop using a neutral cleaner. Rinse thoroughly after cleaning.
Inspect. Wash with warm water and neutral cleaner if dirty.
Check for proper pressure and change if necessary.
Yearly
Scoop
Air Filters
External Water
Filters
Icemaker Exterior
Wipe down with a clean, soft cloth. Use a damp cloth containing a neutral
cleaner to wipe off oil or dirt build up. Clean any chlorine staining (rust
colored spots) using a non-abrasive cleanser.
Wipe down with a clean cloth and warm water.
Underside of
Icemaker and Top
Kits; Bin Door and
Snout
Icemaker and
Clean and sanitize per the cleaning and sanitizing instructions provided in
Dispenser Unit/Ice this manual. See "III.B. Cleaning and Sanitizing Instructions."
Storage Bin
Water Supply Inlet Close the icemaker water supply line shut‑off valve and drain the water
system. Clean the water supply inlet screen.
Condenser
Inspect. Clean if necessary by using a brush or vacuum cleaner. More
frequent cleaning may be required depending on location.
Water Hoses
Inspect the water hoses and clean/replace if necessary.
34
B. Cleaning and Sanitizing Instructions
The icemaker must be cleaned and sanitized at least once a year. More frequent
cleaning and sanitizing may be required in some water conditions.
WARNING
• To prevent injury to individuals and damage to the icemaker, do not use ammonia
type cleaners.
• Carefully follow any instructions provided with the bottles of cleaning and
sanitizing solution.
• Always wear liquid-proof gloves and goggles to prevent the cleaning and sanitizing
solutions from coming into contact with skin or eyes.
• Do not leave the icemaker unattended when panels are off.
NOTICE
To prevent damage to the water pump seal, do not leave the control switch in the
"PUMP" position for extended periods when the water tank is empty.
Preparation
1) Remove the front panel, then move the control switch to the "OFF" position. Make sure
the mode switch is in the "ICE" position. After 3 minutes, move the control switch to the
"ON" position and replace the front panel.
2) Allow the appliance to run until the compressor energizes. Once the compressor
energizes, allow the appliance to run for an additional 3 minutes, then remove the front
panel. Move the control switch to the "OFF" position.
3) Remove all ice from the dispenser unit/ice storage bin. WARNING! If on a dispenser
unit, turn off the dispenser unit power supply after dispensing the ice.
Cleaning
4) Move the mode switch to the "CLEAN" position, then move the control switch to the
"ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs).
Replace the front panel. The water tank drains and then fills.
5) When the control board starts beeping (2 beep sequence), remove the front panel.
Move the control switch to the "OFF" position.
6) Remove the front insulation panel, then pour 10.4 fl. oz. (308 ml) of Hoshizaki "Scale
Away" into the water tank. Replace the front insulation panel.
7) Move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later
1 long beep occurs). Replace the front panel. To avoid excessive foaming in the water
tank, there is a 1 minute delay before circulation begins. After approximately 30 minutes
of circulation, the icemaker performs 3 rinse cycles.
8) When the control board starts beeping (5 beep sequence), remove the front panel.
Move the control switch to the "OFF" position.
9) In bad or severe water conditions, turn off the power supply, then remove, clean
(cleaning solution = 5 oz. Hoshizaki "Scale Away" per gallon of warm water), rinse, and
replace the cube guide, float switch, water supply tubes, spray tubes, and spray guides;
turn on the power supply when complete. Otherwise, continue to step 10.
35
Sanitizing
10) Confirm the mode switch is in the "CLEAN" position, then move the control switch to the
"ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs).
Replace the front panel. The water tank drains and then fills.
11) When the control board starts beeping (2 beep sequence), remove the front panel.
Move the control switch to the "OFF" position.
12) Remove the front insulation panel, then pour 0.6 fl. oz. (18 ml) of an 8.25% sodium
hypochlorite solution (chlorine bleach) into the water tank. Replace the front insulation
panel.
IMPORTANT! Use regular bleach with no additives. Using a bleach with additives
causes excessive foaming during sanitizing, reducing the effectiveness of
sanitizing.
13) Move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later
1 long beep occurs). Replace the front panel. To avoid excessive foaming in the water
tank, there is a 1 minute delay before circulation begins. After approximately 30 minutes
of circulation, the icemaker performs 3 rinse cycles.
14) When the control board starts beeping (5 beep sequence), remove the front panel.
Move the control switch to the "OFF" position.
15) Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly
after cleaning.
16) Move the mode switch to the "ICE" position, then move the control switch to the "ON"
position. Note: If on a dispenser unit, turn on the dispenser unit power supply.
17) Replace all panels in their correct positions.
36
IV. Preparing the Appliance for Periods of Non-Use
NOTICE
• When storing the icemaker for an extended time or in sub-freezing temperatures,
follow the instructions below to prevent damage.
• To prevent damage to the water pump seal, do not leave the control switch in the
"PUMP" position for extended periods when the water tank is empty.
When the icemaker is not used for two or three days under normal conditions, it is
sufficient to move the control switch to the "OFF" position. When storing the icemaker for
an extended time or in sub-freezing temperatures, follow the instructions below.
1. Remove the water from the icemaker water supply line:
1) Turn off the power supply, then remove the front panel.
2) Move the control switch to the "OFF" position.
3) Close the icemaker water supply line shut-off valve, then open the icemaker water
supply line drain valve.
4) Allow the line to drain by gravity.
5) Attach a compressed air or carbon dioxide supply to the icemaker water supply line
drain valve.
6) Move the mode switch to the "ICE" position, then move the control switch to the "ON"
position.
7) Replace the front panel in its correct position, then turn on the power supply.
8) Blow the icemaker water supply line out using the compressed air or carbon dioxide
supply.
9) Close the icemaker water supply line drain valve.
2. Drain the water tank:
1) Turn off the power supply, then remove the front panel.
2) Move the control switch to the "OFF" position.
3) Remove the base cover, then disconnect one end of the pump tubing to drain the water
tank. See Fig. 17. After the water tank has drained, reconnect the pump tubing.
4) Remove all ice from the dispenser unit/ice storage bin. Clean the dispenser unit/ice
storage bin liner using a neutral cleaner. Rinse thoroughly after cleaning.
5) Replace the base cover and the front panel in their correct positions.
37
3. On water-cooled models, remove the water from the water-cooled condenser:
1) Make sure the power supply is off, then remove the front, top, and right side panels.
2) Close the condenser water supply line shut-off valve. If connected to a closed loop
system, also close the condenser return line shut-off valve.
3) Open the condenser water supply line drain valve. If connected to a closed loop system,
also open the condenser return line drain valve.
4) Attach a compressed air or carbon dioxide supply to the condenser water supply line
drain valve.
5) Open the water regulating valve by using a screwdriver to pry up on the spring retainer
underneath the spring. While holding the valve open, blow out the condenser using the
compressed air or carbon dioxide supply until water stops coming out.
6) Close the drain valve(s).
7) Replace the panels in their correct positions.
38
V. Disposal
The appliance contains refrigerant and must be disposed of in accordance with
applicable national, state, and local codes and regulations. Refrigerant must be
recovered by properly certified service personnel.
39
618 Hwy. 74 South, Peachtree City, GA 30269 USA (P) 770.487.2331
(F) 770.487.3360 hoshizakiamerica.com
40
1A4658-011
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