Page 1
Instruction Manual
Modular Crescent Cuber
Models
KMD-460MAJ, MWJ
hoshizakiamerica.com
Issued: 8-31-2018
Page 2
WARNING
Only qualied service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certied 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 qualied 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.
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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. Specications ...................................................................................................................... 6
A. Electrical and Refrigerant Data ..................................................................................... 6
1. KMD-460M_J ........................................................................................................... 6
B. Dimensions/Connections .............................................................................................. 7
1. Air-Cooled Models (MAJ) ......................................................................................... 7
2. Water-Cooled Models (MWJ) ................................................................................... 8
II. Installation and Operating Instructions .............................................................................. 9
A. Location ........................................................................................................................ 9
B. Checks Before Installation ............................................................................................. 9
C. How to Remove Panels ............................................................................................... 10
D. Setup ............................................................................................................................11
1. Dispenser Unit/Ice Storage Bin and Icemaker Setup ..............................................11
2. Bin Control Installation ........................................................................................... 12
E. Electrical Connection .................................................................................................. 14
F. Water Supply and Drain Connections .......................................................................... 15
1. Icemaker ................................................................................................................ 16
2. Water-Cooled Condenser....................................................................................... 17
G. Final Checklist ............................................................................................................ 19
H. Startup ........................................................................................................................ 20
III. Maintenance ................................................................................................................... 21
A. Maintenance Schedule ................................................................................................ 21
B. Cleaning and Sanitizing Instructions ........................................................................... 22
1. Cleaning Procedure ................................................................................................ 22
2. Sanitizing Procedure - Following Cleaning Procedure ........................................... 24
IV. Preparing the Icemaker for Periods of Non-Use ............................................................. 26
V. Disposal ........................................................................................................................... 28
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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 re, follow basic
precautions including the following:
• Only qualied 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, re, or damage.
• The icemaker requires an independent power supply of proper capacity. See the
nameplate for electrical specications. 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 re.
• 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 with damp
hands.
• Do not make any alterations to the appliance. Alterations could result in electric
shock, serious injury, re, 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.
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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 ammable substances near the
appliance. They might catch re.
• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.
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 oor
drain.
• Install the icemaker 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 icemaker on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the icemaker for
these occasions, follow the instructions in "IV. Preparing the Icemaker 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.
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I. Specications
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
certication marks, see the nameplate.
We reserve the right to make changes in specications and design without prior notice.
1. KMD-460M_J
Single Phase
Model Number KMD-460MAJ KMD-460MWJ
AC Supply Voltage 115/60/1 115/60/1
Compressor 115V 8.6RLA 54.5LRA 115V 7.8RLA 54.5LRA
Pump 120V 0.5FLA 23W 120V 0.5FLA 23W
Fan 115V 0.5A 63W --- --- --Other 115V 0.15A 115V 0.15A
Maximum Fuse Size 15 AMPS 15 AMPS
Max. HACR Breaker
(USA Only)
Max. Circuit Breaker
(Canada Only)
Minimum Circuit
Ampacity
Design Pressure HI-467PSI LO-230PSI HI-427PSI LO-230PSI
Refrigerant 404A 1 LB. 5 OZ. 404A 14.1 OZ.
15 AMPS 15 AMPS
15 AMPS 15 AMPS
15 AMPS 15 AMPS
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B. Dimensions/Connections
170
[6-3/4]
1. Air-Cooled Models (MAJ)
Side
45
[1-3/4]
67
[2-5/8]
581
[22-7/8]
613
[24-1/8]
A
B
C
D
E
F
G
H
I
J
72
[2-7/8]
KMD-460MAH
768 [30-1/4]
761 [30]
498 [19-5/8]
103 [4]
201 [7-7/8]
173 [6-3/4]
117 [4-5/8]
54 [2-1/8]
278 [11]
133 [5-1/4]
562
[22-1/8]
ELECTRICAL SUPPLY OPENING
22 [7/8] DIA
I
Rear
ICEMAKER WATER INLET
1/2” FPT
M5 MOUNTING
HOLES
ICEMAKER DRAIN
OUTLET 3/4” FPT
541
[21-1/4]
24
80
[3-1/8]
H
[0.9]
E
Bottom
237
61
[2-3/8]
350
[13-3/4]
[9-3/8]
Units: mm [in.]
507
[20]
10
[3/8]
J
G
F
80
330
[13]
D
[3-1/8]
37
[1-1/2]
ICE DROP
OPENING
C
B
A
NOTICE
• Allow 6" (15 cm) clearance at rear,
left side, and top and 12" (30 cm)
clearance at right side 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.
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2. Water-Cooled Models (MWJ)
170
[6-3/4]
Side
ELECTRICAL SUPPLY OPENING
22 [7/8] DIA
I
Rear
H
ICEMAKER WATER INLET
1/2” FPT
Units: mm [in.]
45
[1-3/4]
67
[2-5/8]
581
[22-7/8]
613
[24-1/8]
KMD-460MWH
A
768 [30-1/4]
B
761 [30]
C
498 [19-5/8]
D
103 [4]
E
201 [7-7/8]
F
173 [6-3/4]
G
117 [4-5/8]
H
54 [2-1/8]
I
278 [11]
J
133 [5-1/4]
K
209 [8-1/4]
L
52 [2]
M
65 [2-1/2]
10
[3/8]
72
[2-7/8]
562
[22-1/8]
K
332
[13-1/8]
80
[3-1/8]
61
350
L
24
[0.9]
[2-3/8]
[13-3/4]
CONDENSER WATER
INLET 1/2” FPT
CONDENSER WATER
OUTLET 3/8” FPT
M
M5 MOUNTING
HOLES
ICEMAKER DRAIN
OUTLET 3/4” FPT
E
C
B
A
Bottom
237
[9-3/8]
F
330
[13]
507
[20]
10
[3/8]
J
G
80
D
[3-1/8]
37
[1-1/2]
ICE DROP
OPENING
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.
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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 Icemaker 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, left side, and top and 12" (30 cm) clearance at
right side for air-cooled models. Allow 6" (15 cm) clearance at rear, sides, and top for
water-cooled and remote models.
• The location should provide a rm and level foundation for the equipment.
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 specied 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 lm from the panels. If the icemaker is exposed to the sun
or to heat, remove the lm after the icemaker cools.
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• 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 storage bin 30" wide or wider.
The following are recommended: Hoshizaki Dispenser, Model DB-200 or DM series;
Hoshizaki Ice Storage Bin, Model B-500 series. For further options, contact your local
Hoshizaki distributor.
C. How to Remove Panels
See Fig. 1
• Front Panel: Loosen the screws. 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.
• Insulation Panel (A): Lift up slightly, and pull towards you.
• Top Insulation: Lift off.
Top Insulation
Insulation Panel (A)
Front Panel
Top Panel
Side Frame
Right Side Panel
Fig. 1
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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.
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. Ifusing 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. NOTICE! Do not use
the side frame to lift the icemaker. See Fig.1. Lift the icemaker from the base.
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 t ush to the
dispenser unit. SeeFig.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.
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
2mounting brackets and the bolts provided. See Fig.2b.
Icemaker
Mounting
Brackets
Bolts
Fig. 2a
Self-Tapping
Screws
(Not Provided)
Icemaker
Dispenser
Unit
Fig. 2b
Ice
Storage
Bin
Mounting
Brackets
Bolts
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2. Bin Control Installation
1) Remove the control box cover. Remove the 2thumbscrews securing insulation
panel(B), then remove insulation panel (B). See Fig. 3.
2) Disconnect the discharge hose from the pump motor, then disconnect the drain valve
drain hose and the overow drain hose.
3) Disconnect the pump motor connector from the back of the control box, then disconnect
the oat switch connector from the control board.
4) Remove the tape securing the bin control.
5) Remove the 2 thumbscrews securing the pump motor and oat switch assembly. See
Fig. 4.
6) Being careful not to pull the bin control cable, lift the bin control up out of the water tank.
Being careful not to snag the bin control or bin control cable, slide the water tank, cube
guide, and pump motor and oat switch assembly out of the icemaker.
Tape
Bin Control Cable
Float Switch
Connector (Black)
Bin Control Cable
Thumbscrews
Bin
Control
Drain Valve
Drain Hose
Discharge
Hose
Pump Motor
Connector
Thumbscrews
Overow
Drain Hose
Insulation
Panel (B)
Water Tank
Bin Control
Fig. 4
Pump Motor
and Float
Switch
Assembly
Cube Guide
Fig. 3
7a) Standard Dispenser Unit or Ice Storage Bin Application: Secure the bin control to
the rear interior wall using the 2 thumbscrews on the rear interior wall. See Fig. 5. Route
the bin control cable vinyl hose through the grommet as illustrated. Do not leave any
slack in the ice drop zone.
Standard Bin Control Mount Position
for Standard Dispenser Unit or Ice Storage Bin Application
Bin Control Cable
Rear Interior Wall
Fig. 5
Thumbscrews
Bin Control
Grommet
Vinyl Hose
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7b) Coca-Cola Freestyle® Dispenser or Dispenser Unit with Thick Adapter Application:
Remove the extension bracket and 2thumbscrews from the accessory bag. Secure the
bin control to the extension bracket using the 2thumbscrews. See Fig. 6. Secure the
extension bracket to the rear interior wall using the 2thumbscrews on the rear interior
wall. Route the bin control cable vinyl hose through the grommet as illustrated. Do not
leave any slack in the ice drop zone.
Optional Bin Control Mount Position
for Coca-Cola Freestyle
®
Dispenser or Dispenser Unit with Thick Adapter Application
Fig. 6
Thumbscrews from
Rear Interior Wall
Rear Interior Wall
Extension Bracket
from Accessory Bag
Thumbscrews from
Accessory Bag
Bin Control
Bin Control Cable
Grommet
Vinyl Hose
8) Replace the water tank, cube guide, and pump motor and oat switch assembly in their
correct positions.
9) Secure the pump motor and oat switch assembly with the 2 thumbscrews.
10) Reconnect the hoses.
11) Reconnect the pump motor connector and the oat switch connector.
12) Replace insulation panel (B) in its correct position and secure with the 2 thumbscrews.
13) Replace insulation panel (A), the top insulation, the control box cover, and the exterior
panels in their correct positions.
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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, re, or damage.
• The icemaker requires an independent power supply of proper capacity. See
the nameplate for electrical specications. 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 re.
• 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 in the junction box. See Fig. 7.
NOTICE
On remote models, the appliance must have power for a minimum of 4hours prior
to startup to prevent compressor damage.
• Usually an electrical permit and services of a
licensed electrician are required.
• The maximum allowable voltage variation is
±10 percent of the nameplate rating.
• On 115-120/60/1 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.
• The opening for the power supply connection
is 7/8" DIA to t a 1/2" trade size conduit.
KMD-460M_J
Fig. 7
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F. Water Supply and Drain Connections
See Figs. 8 through 10
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
113PSIG. 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 lters, strainers, or softeners may be required depending on water quality.
Contact your local Hoshizaki Certied 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.
• Drain lines must have 1/4" fall per foot (2 cm per 1 m) on horizontal runs to get a good
ow. A vented tee connection is also required for proper ow.
• Drain lines should not be piped directly to the sewer system. An air gap of a minimum of
2vertical inches (5 cm) should be between the end of the drain pipes from the icemaker,
dispenser unit/ice storage bin, and water-cooled condenser (if applicable) and the oor
drain.
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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
• 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
Icemaker
Water Supply
Inlet
1/2" FPT
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Bin Drain Outlet
3/4" FPT
Drain Valve
Ice
Storage
Bin
Shut-Off Valve
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
two-inch (5 cm) vertical air
gap between the end of
each pipe and the drain.
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Fig. 8
Model Shown:
KMD-460MAJ
Air-Cooled Models
16
2-inch (5-cm) air gap
Floor
Drain
Page 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 ow 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, conrm 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
at 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
Vent Tube
Icemaker
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Condenser
Drain Outlet
3/8" FPT
Condenser Water
Supply Inlet
1/2" FPT
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Bin Drain Outlet
3/4" FPT
Minimum 1/4"
Nominal ID Hard
Pipe or Equivalent
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Ice
Storage
Bin
Drain Valve
Shut-Off Valve
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-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
2-inch (5-cm) air gap
Fig. 9
Model Shown:
KMD-460MWJ
Water-Cooled Models
Connection to an Open Drain System
17
Floor
Drain
Page 18
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 ow 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, conrm 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 at 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
Icemaker
Condenser
Return Outlet
3/8" FPT
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Shut-Off Valve
Condenser Water
Supply Inlet
1/2" FPT
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Bin Drain Outlet
3/4" FPT
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Fig. 10
Model Shown:
KMD-460MWJ
Connection to a Closed Loop System
Ice
Storage
Bin
Water-Cooled Models
Drain Valve
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-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
2-inch (5-cm) air gap
Floor
Drain
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G. 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) Air-Cooled Models: Is there at least 6" (15 cm) clearance at rear, left side, and top and
12" (30 cm) clearance at right side?
Water-Cooled Models: Is there at least 6" (15 cm) clearance at rear, sides, and top?
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 specied? 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) Are all components, fasteners, and thumbscrews securely in place?
10) Has the end user been given the instruction manual, and instructed on how to operate
the icemaker and the importance of the recommended periodic maintenance?
11) Has the end user been given the name and telephone number of an authorized service
agent?
12) Has the warranty card been lled out and forwarded to the factory for warranty
registration?
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H. 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.
• The pump motor is energized continuously when the control switch is in the
"SERVICE" position.
• At startup, conrm that all internal and external connections are free of leaks.
1) Open the water supply line shut-off valve(s).
2) Remove the front panel.
3) Move the control switch to the "ICE" position.
4) Replace the front panel in its correct position.
5) Turn on the power supply and allow the icemaker to operate for a total of 10 minutes.
6) Remove the front panel, then move the service switch to the "DRAIN" position.
7) Replace the front panel in its correct position and allow the icemaker to drain for
2 minutes.
8) Turn off the power supply.
9) Remove the front panel, then move the control switch to the "ICE" position. Replace the
front panel in its correct position.
10) Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly
after cleaning.
11) Turn on the power supply to start the automatic icemaking process.
12) During the rst 5 minutes of the freeze cycle, conrm bin control operation by pressing
and holding the bin control's actuator paddle until the icemaker shuts down. The
icemaker should shut down in approximately 15 seconds.
13) On water-cooled models, conrm proper condenser drain outlet/return outlet
temperature as outlined in "II.F.2. Water-Cooled Condenser."
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III. Maintenance
The appliance must be maintained in accordance with the instruction manual and labels
provided. Consult with your local Hoshizaki Certied Service Representative about
maintenance service.
WARNING
• Only qualied service technicians should service the appliance.
• To reduce the risk of electric shock, do not touch the control switch or service 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 Scoop Clean the ice scoop using a neutral cleaner. Rinse thoroughly after cleaning.
Bi-Weekly Air Filters Inspect. Wash with warm water and neutral cleaner if dirty.
Monthly External Water
Filters
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a neutral
Underside of
Icemaker and Top
Kits; Bin Door and
Snout
Yearly Icemaker and
Dispenser Unit/Ice
Storage Bin
Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water
Condenser Inspect. Clean if necessary by using a brush or vacuum cleaner. More
Water Hoses Inspect the water hoses and clean/replace if necessary.
Check for proper pressure and change if necessary.
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 warmwater.
Clean and sanitize per the cleaning and sanitizing instructions provided in
this manual. See "III.B. Cleaning and Sanitizing Instructions."
system. Clean the water supply inlet screen.
frequent cleaning may be required depending on location.
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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.
NOTICE
The pump motor is energized continuously when the control switch is in the
"SERVICE" position.
1. Cleaning Procedure
1) Dilute 9.5 . oz. (281 ml) of Hoshizaki "Scale Away" with 1.8 gal. (6.8 l) of warm water.
2) Remove all ice from the evaporator and the dispenser unit/ice storage bin.
Note: To remove cubes on the evaporator, turn off the power supply and turn it back on
after 3 minutes. The harvest cycle starts and the cubes will be removed from the
evaporator.
3) Turn off the power supply.
4) Remove the front panel, then move the service switch to the "DRAIN" position. Move
the control switch to the "SERVICE" position.
5) Replace the front panel in its correct position, then turn on the power supply for
2 minutes.
6) Turn off the power supply.
7) Remove the front panel, then remove insulation panel (A) (the large insulation panel in
front of the evaporator) by lifting up the panel slightly and pulling it towards you.
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8) In bad or severe water conditions, clean the oat switch as described below. Otherwise,
continue to step 9.
a. Remove the control box cover. Remove the 2 thumbscrews securing insulation
panel (B), then remove insulation panel (B). See Fig. 19.
b. Disconnect the discharge hose, the drain valve drain hose, and the overow drain
hose.
c. Disconnect the pump motor connector from the back of the control box, then
disconnect the oat switch connector from the control board.
d. Remove the 2 thumbscrews securing the pump motor and oat switch assembly.
See Fig. 20.
e. Pull out the water tank, cube guide, and pump motor and oat switch assembly
together.
f. Remove the screw securing the oat switch to the top of the assembly. Remove the
oat switch from the assembly.
g. Remove the retainer rod from the bottom of the oat switch, then remove the oat.
Be careful not to bend the retainer rod excessively when removing it.
h. Wipe down the oat switch housing, shaft, oat, and retainer rod with cleaning
solution. Rinse the parts thoroughly with clean water.
i. Reassemble the oat switch. Replace the oat switch in its correct position, then
secure with the screw.
j. Replace the removed parts in the reverse order of which they were removed.
9) Pour the cleaning solution into the water tank.
10) Move the service switch to the "WASH" position.
11) Replace insulation panel (A) and the front panel in their correct positions.
12) Turn on the power supply to start the washing process.
13) Turn off the power supply after 30 minutes.
14) Remove the front panel.
15) Move the service switch to the "DRAIN" position.
16) Replace the front panel in its correct position, then turn on the power supply for
2 minutes.
Float Switch
Connector (Black)
Pump Motor
Connector
Thumbscrews
Thumbscrews
Pump Motor
and Float
Switch
Assembly
Drain Valve
Drain Hose
Discharge Hose
Overow
Drain Hose
Fig. 19
Insulation
Panel (B)
Cube Guide
Water Tank
Fig. 20
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17) Turn off the power supply, then remove the front panel.
18) Move the control switch to the "ICE" position.
19) Replace the front panel in its correct position.
20) Turn on the power supply to ll the water tank with water.
21) Turn off the power supply after 3 minutes.
22) Remove the front panel.
23) Move the service switch to the "WASH" position, then move the control switch to the
"SERVICE" position.
24) Replace the front panel in its correct position.
25) Turn on the power supply to rinse off the cleaning solution.
26) Turn off the power supply after 5 minutes.
27) Remove the front panel.
28) Move the service switch to the "DRAIN" position.
29) Replace the front panel in its correct position, then turn on the power supply for
2 minutes.
30) Turn off the power supply.
31) Remove the front panel.
32) Repeat steps 18 through 31 three more times to rinse thoroughly.
Note: If you do not sanitize the icemaker, go to step 14 in "2. Sanitizing Procedure."
2. Sanitizing Procedure - Following Cleaning Procedure
1) Dilute 0.9 . oz. (27 ml) of a 5.25% sodium hypochlorite solution (chlorine bleach) with
1.8 gal. (6.8 l) of warm water.
2) Remove insulation panel (A).
3) Pour the sanitizing solution into the water tank.
4) Move the service switch to the "WASH" position.
5) Replace insulation panel (A) and the front panel in their correct positions.
6) Turn on the power supply to start the sanitizing process.
7) Turn off the power supply after 15 minutes.
8) Remove the front panel.
9) Move the service switch to the "DRAIN" position.
10) Replace the front panel in its correct position, then turn on the power supply for
2 minutes.
11) Turn off the power supply.
12) Remove the front panel.
13) Repeat steps 18 through 31 in "1. Cleaning Procedure" two times to rinse thoroughly.
14) Move the control switch to the "ICE" position.
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15) Replace the front panel in its correct position.
16) Clean the dispenser unit/storage bin liner using a neutral cleaner. Rinse thoroughly after
cleaning.
17) Turn on the power supply to start the automatic icemaking process.
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IV. Preparing the Icemaker 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.
• The pump motor is energized continuously when the control switch is in the
"SERVICE" position.
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 on the control box 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 compressed air or carbon dioxide supply to the icemaker water supply line drain
valve.
6) Move the control switch to the "ICE" 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 compressed air or carbon dioxide.
2. Drain the water tank:
1) Turn off the power supply, then remove the front panel.
2) Move the service switch to the "DRAIN" position, then move the control switch to the
"SERVICE" position.
3) Replace the front panel in its correct position, then turn on the power supply for
2 minutes.
4) Turn off the power supply, then remove the front panel.
5) Move the control switch to the "OFF" position.
6) Replace the front panel in its correct position.
7) Remove all ice from the dispenser unit/storage bin. Clean the dispenser unit/storage bin
using a neutral cleaner. Rinse thoroughly after cleaning.
8) Close the icemaker water supply line drain valve.
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 panel and right side panel.
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.
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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 right side panel and front panel in their correct positions.
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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 certied service personnel.
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HOSHIZAKI AMERICA, INC.
618 Hwy. 74 S., Peachtree City, GA 30269 USA TEL (770) 487-2331 FAX (770) 487-3360 www.hoshizaki.com 1A5296-010
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