Hoshizaki America, Inc.
Hoshizaki
Modular Crescent Cuber
Models
KM-650MAH
KM-650MWH
KM-650MRH
INSTRUCTION MANUAL
“A Superior Degree
of Reliability”
™
Issued: 8-14-2006
Revised: 2-27-2009
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IMPORTANT
This manual should be read carefully before the icemaker is installed and
operated. Only qualified service technicians should install, service, and
maintain the icemaker. Read the warnings contained in this booklet carefully
as they give important information regarding safety. Please retain this booklet
for any further reference that may be necessary.
CONTENTS
A. Nameplate Rating......................................................................................................... 5
B. Dimensions / Connections............................................................................................ 8
1. KM-650MAH ........................................................................................................ 8
A. Checks Before Installation.......................................................................................... 11
C. Location...................................................................................................................... 1ꢀ
E. Electrical Connection.................................................................................................. 13
3. Setup..................................................................................................................... 15
3
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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, or damage to the unit.
WARNING
Indicates a hazardous situation which could result in death or
serious injury.
CAUTION
IMPORTANT
Indicates a situation which could result in damage to the unit.
Indicates important information about the use and care of the
unit.
WARNING
This icemaker 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
eventual damage caused by improper, incorrect, and unreasonable use.
To reduce the risk of death, electric shock, serious injury, or fire, follow
basic precautions including the following:
• 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 extensive damage
to equipment.
• This unit requires an independent power supply. See the nameplate for
proper voltage and breaker/fuse size. Failure to use a proper breaker or fuse
can result in a tripped breaker, blown fuses, or damage to existing wiring.
This could lead to heat generation or fire.
• THIS UNIT MUST BE GROUNDED. Failure to properly ground this unit could
result in death or serious injury.
• This unit should be disassembled or repaired only by qualified service
personnel to reduce the risk of electric shock, injury, or fire.
• Do not make any alterations to the unit. Alterations could result in electric
shock, injury, fire, or damage to the unit.
4
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I. Specifications
A. Nameplate Rating
1. KM-650MAH (air-cooled)
MODEL NUMBER
KM-650MAH
SERIAL NUMBER
AC SUPPLY VOLTAGE
208-230/60/1(3 WIRE WITH
NEUTRAL FOR 115V)
208-230V 6.0RLA 40LRA
COMPRESSOR
PUMP
FAN
OTHER
120V 0.5FLA 10W
120V 1.0FLA 30W
115-120V 0.15A
15 AMPS
MAXIMUM FUSE SIZE
MAX. HACR BREAKER(USA ONLY)
MAX. CIRC. BREAKER (CANADA ONLY)
MINIMUM CIRCUIT AMPACITY
DESIGN PRESSURE
REFRIGERANT
15 AMPS
15 AMPS
15 AMPS
HI-467PSI LO-230PSI
404A 1 LB. 8.7 OZ.
MOTOR-COMPRESSOR THERMALLY PROTECTED,
NOT INTENDED FOR OUTDOOR USE!
Hoshizaki America, Inc.
Peachtree City, GA
ICE MAKER WITHOUT
STORAGE MEANS
COMPONENT
946Z
See the nameplate for electrical and refrigeration specifications. This nameplate is located
on the rear panel.
Since this nameplate is located on the rear panel of the icemaker, it cannot be read when
the back of the icemaker is against a wall or against another piece of kitchen equipment.
Therefore, the necessary electrical and refrigeration information is also on the rating label,
which can be easily seen by removing only the front panel of the icemaker.
We reserve the right to make changes in specifications and design without prior notice.
5
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2. KM-650MWH (water-cooled)
MODEL NUMBER
KM-650MWH
SERIAL NUMBER
AC SUPPLY VOLTAGE
208-230/60/1 (3 WIRE WITH
NEUTRAL FOR 115V)
COMPRESSOR
208-230V 5.1RLA 40LRA
PUMP
FAN
120V 0.5FLA 10W
--- --- ---
OTHER
115-120V 0.15A
15 AMPS
MAXIMUM FUSE SIZE
MAX. HACR BREAKER(USA ONLY)
MAX. CIRC. BREAKER (CANADA ONLY)
MINIMUM CIRCUIT AMPACITY
DESIGN PRESSURE
REFRIGERANT
15 AMPS
15 AMPS
15 AMPS
HI-427PSI LO-230PSI
404A 1 LB. 5.7 OZ.
MOTOR-COMPRESSOR THERMALLY PROTECTED,
NOT INTENDED FOR OUTDOOR USE!
Hoshizaki America, Inc.
Peachtree City, GA
ICE MAKER WITHOUT
STORAGE MEANS
COMPONENT
946Z
See the nameplate for electrical and refrigeration specifications. This nameplate is located
on the rear panel.
Since this nameplate is located on the rear panel of the icemaker, it cannot be read when
the back of the icemaker is against a wall or against another piece of kitchen equipment.
Therefore, the necessary electrical and refrigeration information is also on the rating label,
which can be easily seen by removing only the front panel of the icemaker.
We reserve the right to make changes in specifications and design without prior notice.
6
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3. KM-650MRH (remote air-cooled)
MODEL NUMBER
KM-650MRH
SERIAL NUMBER
AC SUPPLY VOLTAGE
208-230/60/1 (3 WIRE WITH
NEUTRAL FOR 115V)
COMPRESSOR
208-230V 5.6RLA 40LRA
PUMP
FAN REMOTE
OTHER
MAXIMUM FUSE SIZE
MAX. HACR BREAKER(USA ONLY)
MAX. CIRC. BREAKER (CANADA ONLY)
MINIMUM CIRCUIT AMPACITY
DESIGN PRESSURE
REFRIGERANT
120V 0.5FLA 10W
120V 3A MAX
115-120V 0.3A
15 AMPS
15 AMPS
15 AMPS
15 AMPS
HI-467PSI LO-230PSI
404A
MOTOR-COMPRESSOR THERMALLY PROTECTED,
NOT INTENDED FOR OUTDOOR USE!
Hoshizaki America, Inc.
Peachtree City, GA
ICE MAKER WITHOUT
STORAGE MEANS
COMPONENT
946Z
See the nameplate for electrical and refrigeration specifications. This nameplate is located
on the rear panel.
Since this nameplate is located on the rear panel of the icemaker, it cannot be read when
the back of the icemaker is against a wall or against another piece of kitchen equipment.
Therefore, the necessary electrical and refrigeration information is also on the rating label,
which can be easily seen by removing only the front panel of the icemaker.
We reserve the right to make changes in specifications and design without prior notice.
7
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II. Installation and Operating Instructions
WARNING
1. This icemaker must be installed in accordance with applicable national, state,
and local regulations.
ꢀ. CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews
are securely in place after installation. Make sure that none have fallen into
the storage bin.
A. 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.
• Remove the panels to prevent damage when installing the icemaker. See "II.B. 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.
• See the nameplate on the rear panel, and check that your voltage supplied
corresponds with the voltage specified on the nameplate.
• This icemaker can be installed on a storage bin ꢀꢀ" wide or wider. Hoshizaki Ice
Storage Bin, Model B-300 series is recommended. For further options, contact your
local Hoshizaki distributor.
• On remote air-cooled model, a remote condenser unit is needed. Hoshizaki Remote
Condenser Unit, Model URC-6F, is recommended.
B. How to Remove Panels
See Fig. 1
• Front Panel: Remove the screw. Lift up and
towards you.
Insulation
Panel
Front
Panel
Top Panel
• Top Panel: Lift up at front slightly, push rearward,
and lift off.
• Side Panel (R): Remove the screw. Slide forward
slightly, and lift off.
Screw
• Insulation Panel: Lift up slightly, and pull towards
you.
Base Cover
Side Panel (R)
Screw
• Base Cover: Lift up slightly, and pull towards you.
Fig. 1
11
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C. Location
CAUTION
1. This icemaker is not intended for outdoor use. Normal operating ambient
temperature should be within 45°F to 100°F (7°C to 38°C); Normal operating
water temperature should be within 45°F to 90°F (7°C to 3ꢀ°C). Operation
of the icemaker, for extended periods, outside of these normal temperature
ranges may affect icemaker performance.
ꢀ. This 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 3ꢀ°F (0°C). See "III.C. Preparing the Icemaker for Long Storage."
For best operating results:
• The icemaker should not be located next to ovens, grills, or other high heat producing
equipment.
• The location should provide a firm and level foundation for the 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.
D. Setup
1) Unpack the storage bin, and attach the 4 adjustable legs provided (bin accessory) to
the bottom of the storage bin.
ꢀ) Position the storage bin in the selected permanent location.
3) Place the icemaker on top of the storage bin.
4) Secure the icemaker to the storage bin
using the ꢀ mounting brackets and the
bolts provided. See Fig. ꢀ.
Icemaker
5) Level the icemaker and storage bin in both
the left-to-right and front-to-rear directions.
Adjust the storage bin legs to make the
icemaker level.
Bolts
6) Replace the panels in their correct
positions.
Bin
Mounting
Brackets
Fig. 2
1ꢀ
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E. Electrical Connection
WARNING
For All Models
1. 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 extensive damage
to equipment.
ꢀ. This unit requires an independent power supply. See the nameplate for
proper voltage and breaker/fuse size. Failure to use a proper breaker or fuse
can result in a tripped breaker, blown fuses, or damage to existing wiring.
This could lead to heat generation or fire.
3. THIS UNIT MUST BE GROUNDED. Failure to properly ground this unit could
result in death or serious injury.
4. 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. 3.
Additional Warnings for Remote Air-Cooled Model
5. THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power
supply and ground wire to the remote condenser unit are supplied from the
icemaker. See "II.F.5. Electrical Connection."
6. To reduce the risk of electric shock, make all remote condenser unit
connections before connecting the icemaker power supply.
7. On remote air-cooled model, the icemaker should 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 maximum allowable voltage variation is ±10
percent of the nameplate rating.
• The white lead must be connected to the
neutral conductor of the power source.
CAUTION! Miswiring may result in severe
damage to the icemaker. See Fig. 3.
• The opening for the power supply connection is
7/8" DIA to fit a 1/ꢀ" trade size conduit.
Fig. 3
13
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F. Installation of Remote Condenser Unit
WARNING
1. Installation of remote condenser unit must be performed by properly trained
and EPA-certified service personnel.
ꢀ. Failure to install the equipment within these guidelines may adversely affect
safety, performance, component life, and warranty coverage.
1. Checks Before Installation
1) Remove the shipping carton, tape, and packing material.
ꢀ) Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blade moves freely.
2. Location
CAUTION
The remote condenser unit is intended for outdoor use. Normal operating
ambient temperature should be within -ꢀ0°F to +1ꢀꢀ°F (-ꢀ9°C to +50°C).
Operation of the remote condenser unit, for extended periods, outside of this
normal temperature range may affect icemaker performance.
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 ꢀ4" (61 cm) clearance in both front and rear for
proper air circulation and ease of maintenance and/or service should they be required.
• The maximum line length for the standard refrigerant charge is 66 feet. Should an
installation require a longer line length, line sizes must be increased and additional
refrigerant must be added. Instead of the standard 3/8" OD discharge line and
1/4" OD liquid line for this icemaker, increase the line sizes to 1/ꢀ" OD discharge line
and 3/8" OD liquid line for the entire run. Add 16.5 oz. of R-404A to the system to
compensate for the larger diameter line sizes, then add .4 oz. of R-404A for each foot
over 66 feet to a maximum of 100 feet. Hoshizaki Technical Support is available at
1-800-ꢀ33-1940 for recommendations.
• The maximum vertical distance between the remote condenser unit and the icemaker
is 33 feet above or 10 feet below the icemaker. These distances are measured fitting to
fitting.
Min. ꢀ4" (61 cm) Clearance
Air
Air
Fig. 4
14
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3. Setup
1) Secure the legs to the remote condenser
unit with the 8 bolts and nuts provided. See
Fig. 5.
Bolts with Split
Lock Washer
and Flat Washer
ꢀ) The legs have 8 mounting holes. Secure
the legs with 8 bolts (not included).
Fig. 5
Nuts
4. Line Set
CAUTION
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.
• Precharged factory line sets, available as optional equipment from Hoshizaki America, are
recommended. For details, see "II.F.4.a) Factory Line Set Installation." Field fabricated
line sets are allowed. For details, see "II.F.4.b) Field Fabricated Line Set Installation."
• The maximum line length for the standard refrigerant charge is 66 feet. Should an
installation require a longer line length, line sizes must be increased and additional
refrigerant must be added. Instead of the standard 3/8" OD discharge line and 1/4" OD
liquid line for this icemaker, increase the line sizes to 1/ꢀ" OD discharge line and 3/8" OD
liquid line for the entire run. Add 16.5 oz. of R-404A to the system to compensate for
the larger diameter line sizes, then add .4 oz. of R-404A for each foot over 66 feet to a
maximum of 100 feet. Hoshizaki Technical Support is available at 1-800-ꢀ33-1940 for
recommendations.
• The maximum vertical distance between the remote condenser unit and the icemaker is
33 feet above or 10 feet below the icemaker. These distances are measured fitting to
fitting.
a) Factory Line Set Installation
1) Route the factory line set (3/8" OD discharge line and 1/4" OD liquid line) 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. 6. Factory fabricated line sets
are precharged and do not need to be evacuated.
CAUTION
1. Ensure that there are no traps and no kinks in the line set.
ꢀ. Do not coil extra line set. If the line set is too long, recover the line set charge
and store it in an approved container. Do not discharge the refrigerant into
the atmosphere. Remove the extra line set length, braze the connections,
then skip to step 4 in "II.F.4.b) Field Fabricated Line Set Installation."
15
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ꢀ) 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 to the entire male fitting, including threads,
o-ring, and diaphragm, before making the connection. See Fig. 7.
CAUTION
Do not use thread sealant on the fittings. Use POE refrigerant oil 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. 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.
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. 8.
b) Field Fabricated Line Set Installation
1) Route a 3/8" OD copper tube discharge line and a 1/4" OD copper tube liquid line
between the remote condenser unit and the icemaker. Leave a service loop behind the
icemaker to allow the icemaker to be pulled out for service. See Fig. 6.
CAUTION
1. Ensure that there are no traps and no kinks in the line set.
ꢀ. Do not coil extra line set. Fabricate the line set to the proper length.
ꢀ) 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.
4) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (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.
5) Evacuate through the charging ports on the Parker quick connect couplings and charge
with R-404A refrigerant vapor to a pressure of 15 to 30 PSIG.
6) 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 to the entire male fitting, including threads,
o-ring, and diaphragm, before making the connection. See Fig. 7.
CAUTION
Do not use thread sealant on the fittings. Use POE refrigerant oil only.
16
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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. 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.
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. 8.
Remote Condenser Unit
Icemaker
Male Fitting
Female Coupling
3/8" OD Discharge Line
(Insulated)
1/4" OD Liquid Line
(Insulated)
Service Loop
Fig. 6
Male Fitting
DO NOT USE
THREAD SEALANT
Brush
Apply POE Oil to
Entire Male Fitting
Threads
Diaphragm
O-Ring
THREAD
SEALANT
POLYOL
ESTER
(POE) OIL
Fig. 7
Wrench
Reference Line
1/6 Turn
After Tight, Tighten an
Additional 1/6 Turn
Backup
Wrench
Backup
Wrench
Wrench
Fig. 8
17
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5. Electrical Connection
WARNING
1. 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 extensive damage to equipment.
ꢀ. THIS UNIT MUST BE GROUNDED. Be sure to install a proper ground from
the icemaker to the remote condenser unit. Use wire of an appropriate gage
and outdoor rating. Failure to properly ground this unit could result in death
or serious injury.
3. The remote condenser unit must be connected to the fan motor junction box
on the icemaker. Use wire of an appropriate gage and outdoor rating. Do not
connect the remote condenser leads to an external power source.
4. To reduce the risk of electric shock, make all remote condenser unit
connections before connecting the icemaker power supply.
5. On remote air-cooled model, the icemaker should 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/ꢀ" trade size conduit.
1) Remove the louver panel. See Fig. 9.
ꢀ) Remove the junction box cover on the remote condenser unit. Remove the fan motor
junction box cover on the icemaker.
3) Install a ground wire from the icemaker to the remote condenser unit. Use wire of an
appropriate gage and outdoor rating.
4) Connect the fan motor leads in the junction box of the remote condenser unit to the fan
motor leads in the fan motor junction box of the icemaker. Use wire of an appropriate
gage and outdoor rating.
5) Replace the junction box covers and the louver panel in their correct positions.
Icemaker
Remote Condenser Unit
Screws
Junction Box
Fan Motor Junction
Box Cover
Cover
Louver Panel
Screw
Fig. 9
18
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6. Stacking Remote Condenser Units
1) Install the lower remote condenser unit as described earlier in this section.
ꢀ) Place the upper remote condenser unit on top of the lower. See Fig. 10.
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. 10
19
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G. Water Supply and Drain Connections
See Fig. 11, 12, or 13
WARNING
1. Water supply and drain connections must be installed in accordance with
applicable national, state, and local regulations.
ꢀ. Normal operating water temperature should be within 45°F to 90°F (7°C
to 3ꢀ°C). Operation of the icemaker, for extended periods, outside of this
normal temperature range may affect icemaker performance.
3. To prevent damage to equipment, do not operate the icemaker when the
water supply is off, or if the pressure is below 10 PSIG. Do not run the
icemaker until the proper water pressure is reached.
• A plumbing permit and services of a licensed plumber may be required in some areas.
• External filters, strainers, or softeners may be required depending on water quality.
Contact your local Hoshizaki distributor for recommendations.
• Water supply pressure should 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.
• The icemaker and condensation drain line(s), 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 (ꢀ 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
ꢀ vertical inches (5 cm) should be between the end of the drain pipes from the icemaker
and condensation drain, storage bin, and water-cooled condenser (if applicable) and the
floor drain.
ꢀ0
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1. Icemaker
• Icemaker water supply inlet is 1/ꢀ" female pipe thread (FPT). A minimum of 3/8" OD
copper tubing is recommended for the icemaker water supply line.
• An icemaker water supply line shut-off valve and drain valve should be installed.
• Icemaker drain outlet is 3/4" FPT. A minimum of 3/4" OD hard pipe is recommended
for the icemaker drain line. Condensation drain outlet is 3/8" OD stainless tube. The
condensation drain line can be connected to the icemaker drain line or can be run
separately.
Icemaker Water Supply Line
Shut-Off Valve
Icemaker
Icemaker
Water Supply
Inlet
1/ꢀ" FPT
Condensation
Drain Outlet
3/8" OD Stainless
Tube
Icemaker Water Supply Line
Drain Valve
Icemaker
Drain Outlet
3/4" FPT
Bin Drain Outlet
3/4" FPT
Bin
Separate piping to approved drain.
Leave a two-inch (5 cm) vertical air
gap between the end of each pipe
and the drain.
Two-inch
(5 cm) air
gap
Floor
Drain
KM-650MAH and KM-650MRH
Fig. 11
ꢀ1
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2. Water-Cooled Condenser
a) Connection to an Open Drain System
• Condenser water supply inlet is 1/ꢀ" female pipe thread (FPT). A minimum of 3/8" OD
copper tubing is recommended for the condenser water supply line.
• A condenser water supply line shut-off valve and drain valve should be installed.
• Condenser drain outlet is 3/8" FPT. A minimum of 3/8" OD hard pipe is recommended for
the condenser drain line.
• In some areas, a back flow preventer may be required in the cooling water circuit.
Icemaker Water
Supply Inlet
1/ꢀ" FPT
Icemaker
Icemaker Water Supply Line
Shut-Off Valve
Condenser Water
Supply Inlet
1/ꢀ" FPT
Condenser Water Supply Line
Shut-Off Valve
Condenser
Drain Outlet
3/8" FPT
Icemaker Water Supply Line
Drain Valve
Condensation
Drain Outlet
3/8" OD Stainless
Tube
Condenser Water Supply Line
Drain Valve
Icemaker
Drain Outlet
3/4" FPT
Bin
Separate piping to approved drain.
Leave a two-inch (5 cm) vertical air
gap between the end of each pipe
and the drain.
Bin Drain Outlet
3/4" FPT
Two-inch
(5 cm) air
gap
Floor
Drain
KM-650MWH
Fig. 12
Connection to an Open Drain System
ꢀꢀ
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b) Connection to a Closed Loop System
• Condenser water supply inlet is 1/ꢀ" female pipe thread (FPT). A minimum of 3/8" OD
copper tubing is recommended for the condenser water supply line.
• Condenser return outlet is 3/8" FPT. A minimum of 3/8" OD hard pipe is recommended for
the condenser return line.
• Shut-off valves and drain valves should be installed at both the condenser water supply
inlet and condenser return outlet.
• The water supply to the condenser should not drop below 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 outlet temperature is not in the proper range, adjust the
water-regulating valve to bring it into range.
Icemaker Water Supply
Icemaker Water
Line Shut-Off Valve
Supply Inlet
Icemaker
1/ꢀ" FPT
Condenser Water Supply Line
Shut-Off Valve
Condenser Water
Supply Inlet
1/ꢀ" FPT
Condenser Return Line
Shut-Off Valve
Condenser
Return Outlet
3/8" FPT
Condensation
Drain Outlet
3/8" OD Stainless
Tube
Icemaker Water Supply Line
Drain Valve
Condenser Water Supply Line
Drain Valve
Icemaker
Drain Outlet
3/4" FPT
Bin
Separate piping to approved drain.
Leave a two-inch (5 cm) vertical air
gap between the end of each pipe
and the drain.
Two-inch
(5 cm) air
gap
Bin Drain Outlet
3/4" FPT
Condenser Return Line
Drain Valve
Floor
Drain
KM-650MWH
Fig. 13
Connection to a Closed Loop System
ꢀ3
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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
storage bin.
1) Is the icemaker level?
ꢀ) 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 3ꢀ°C) all year around?
3) Is there at least 6" (15 cm) clearance at sides, rear, and top of the icemaker for proper
air circulation and ease of maintenance and service?
4) Have the shipping carton, tape, and packing material been removed from the
icemaker? Is the cube guide in the correct position?
5) Are all components, fasteners, and thumbscrews securely in place?
6) Have all electrical and water connections been made? Do electrical and water
connections meet all national, state, and local code and regulation requirements?
7) Has the power supply voltage been checked or tested against the nameplate rating?
Has a proper ground been installed to the icemaker? On remote air-cooled model, has
a proper ground also been installed to the remote condenser unit?
8) 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?
Note: The icemaker may stop running when the water supply is off, or if the pressure
is below 10 PSIG. When the proper water pressure is reached, the icemaker
automatically starts running again.
9) Are the compressor hold-down bolts snug? 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?
10) On remote air-cooled model, is the refrigerant line set tightened and free of kinks?
11) On remote air-cooled model, has the icemaker power supply been on for a minimum of
4 hours?
1ꢀ) 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?
13) Has the end user been given the name and telephone number of an authorized service
agent?
14) Has the warranty card been filled out and forwarded to the factory for warranty
registration?
ꢀ4
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I. Startup
WARNING
1. All parts are factory-adjusted. Improper adjustments may adversely affect
safety, performance, component life, and warranty coverage.
ꢀ. If the icemaker is turned off, wait for at least 3 minutes before restarting the
icemaker to prevent damage to the compressor.
3. To prevent damage to the water pump seal, do not operate the icemaker with
the control switch in the "WASH" position when the water tank is empty.
4. At startup, confirm that all internal and external connections are free of leaks.
5. On remote air-cooled model, the icemaker should 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).
ꢀ) Remove the front panel.
3) Move the control switch on the control box 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) Turn off the power supply, then remove the front panel.
7) Remove the base cover, then disconnect one end of the pump tubing to drain the water
tank. See Fig. 14.
8) After the water tank has drained, reconnect the pump tubing.
9) Clean the storage bin liner using a neutral cleaner. Rinse thoroughly after cleaning.
10) Replace the base cover and the front panel in their correct positions.
11) Turn on the power supply to start the automatic icemaking process.
1ꢀ) To confirm bin control operation, press and hold the bin control's actuator paddle during
the first 5 minutes of the freeze cycle. The icemaker should shut down in approximately
15 seconds.
Disconnect This
End of Pump
Tubing to Drain
Water Tank
Base Cover
Fig. 14
ꢀ5
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III. Cleaning and Maintenance
WARNING
CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after any cleaning or maintenance is done to the unit. Make
sure that none have fallen into the storage bin.
A. Cleaning and Sanitizing Instructions
Hoshizaki recommends cleaning and sanitizing this unit at least once a year. More
frequent cleaning and sanitizing, however, may be required in some existing water
conditions.
WARNING
1. 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.
3. Always wear liquid-proof gloves and goggles to prevent the cleaning and
sanitizing solutions from coming into contact with skin or eyes.
4. To prevent damage to the water pump seal, do not operate the icemaker with
the control switch in the "WASH" position when the water tank is empty.
IMPORTANT
1. The cleaning valve is opened during cleaning and sanitizing to allow solution
flow to the inside of the evaporator. It should be closed for all icemaking
operation. The compressor will not operate unless this valve is completely
closed.
ꢀ. To close the cleaning valve, the valve handle should be at a right angle to the
valve body. To open the cleaning valve, the valve handle should be parallel
to the valve body.
CLOSED
OPEN
Normal Icemaking Operation
Cleaning and Sanitizing Operation
(allows solution flow to the inside
of the evaporator)
ꢀ6
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1. Cleaning Procedure
1) Dilute 16 fl. oz. (473 ml) of recommended cleaner Hoshizaki "Scale Away" or
"LIME-A-WAY" (Economics Laboratory, Inc.) with 3 gal. ( 11 l) of warm water.
ꢀ) Remove all ice from the evaporator and the 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 remove the insulation panel by lifting up the panel slightly
and pulling it towards you.
5) Remove the base cover, then disconnect one end of the pump tubing to drain the water
tank. See Fig. 14. After the water tank has drained, reconnect the pump tubing.
6) In bad or severe water conditions, clean the float switch assembly as described below.
Otherwise, continue to step 7.
a. Disconnect the vent tube and the flush tube from the top of the float switch, then
remove the float switch assembly. Remove the rubber boot from the bottom of the
assembly.
b. Remove the retainer rod from the bottom of the float switch housing, then remove
the float. Be careful not to bend the retainer rod excessively when removing it.
c. Wipe down the float switch housing, shaft, float, and retainer rod with cleaning
solution. Clean the inside of the rubber boot and hose with cleaning solution. Rinse
the parts thoroughly with clean water.
d. Reassemble the float switch assembly and replace it and the rubber boot in their
correct positions. Reconnect the vent tube and the flush tube.
7) Pour the cleaning solution into the water tank.
8) Fully open the cleaning valve on the left side wall of the machine compartment.
9) Move the control switch on the control box to the "WASH" position.
10) Replace the insulation panel and the front panel in their correct positions.
11) Turn on the power supply to start the washing process.
1ꢀ) Turn off the power supply after 30 minutes.
13) Remove the front panel.
14) Disconnect one end of the pump tubing to drain the water tank. After the water tank has
drained, reconnect the pump tubing.
15) Move the control switch to the "ICE" position.
16) Close the cleaning valve.
Note: The icemaker will not operate unless the cleaning valve is completely closed.
17) Replace the front panel in its correct position.
18) Turn on the power supply to fill the water tank with water.
19) Turn off the power supply after 3 minutes.
ꢀ0) Remove the front panel and fully open the cleaning valve.
ꢀ7
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ꢀ1) Move the control switch to the "WASH" position.
ꢀꢀ) Replace the front panel in its correct position.
ꢀ3) Turn on the power supply to rinse off the cleaning solution.
ꢀ4) Turn off the power supply after 5 minutes.
ꢀ5) Remove the front panel.
ꢀ6) Disconnect one end of the pump tubing to drain the water tank. After the water tank has
drained, reconnect the pump tubing.
ꢀ7) Repeat steps 15 through ꢀ6 three more times to rinse thoroughly.
Note: If you do not sanitize the icemaker, go to step 10 in "ꢀ. Sanitizing Procedure."
2. Sanitizing Procedure - Following Cleaning Procedure
1) Dilute a 5.ꢀ5% sodium hypochlorite solution (chlorine bleach) with warm water. (Add
1.5 fl. oz. (44 ml) of sanitizer to 3 gal. (11 l) of water.)
ꢀ) Remove the insulation panel.
3) Pour the sanitizing solution into the water tank.
4) Replace the insulation panel and the front panel in their correct positions.
Note: Make sure the control switch is in the "WASH" position and the cleaning valve is
open.
5) Turn on the power supply to start the sanitizing process.
6) Turn off the power supply after 15 minutes.
7) Remove the front panel.
8) Disconnect one end of the pump tubing to drain the water tank. After the water tank has
drained, reconnect the pump tubing.
9) Repeat steps 15 through ꢀ6 in "1. Cleaning Procedure" two times to rinse thoroughly.
10) Close the cleaning valve.
11) Move the control switch to the "ICE" position.
1ꢀ) Replace the front panel and the base cover in their correct positions.
13) Clean the storage bin liner using a neutral cleaner. Rinse thoroughly after cleaning.
14) Turn on the power supply to start the automatic icemaking process.
ꢀ8
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B. Maintenance
This icemaker must be maintained individually, referring to the instruction manual and
labels provided with the icemaker.
WARNING
1. Only qualified service technicians should attempt to service or maintain this
icemaker.
ꢀ. Disconnect power before performing service or maintenance.
1. Stainless Steel Exterior
To prevent corrosion, wipe the exterior occasionally with a clean, soft cloth. Use a damp
cloth containing a neutral cleaner to wipe off oil or dirt buildup.
2. Storage Bin and Scoop
• Wash your hands before removing ice. Use the plastic scoop provided (bin accessory).
• The storage bin is for ice use only. Do not store anything else in the storage bin.
• Clean the scoop and the storage bin liner using a neutral cleaner. Rinse thoroughly
after cleaning.
3. Air Filters (air-cooled model)
Plastic mesh air filters remove dirt and dust from the air, and keep the condenser from
getting clogged. As the filters get clogged, the icemaker's performance will be reduced.
Check the filters at least twice a month. When clogged, use warm water and a neutral
cleaner to wash the filters.
4. Condenser (air-cooled and remote air-cooled models)
Check the condenser once a year, and clean the coil if required by using a brush or
vacuum cleaner. More frequent cleaning may be required depending on location.
ꢀ9
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C. Preparing the Icemaker for Long Storage
CAUTION
1. 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 operate the icemaker with
the control switch in the "WASH" position 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.
ꢀ) 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 a 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 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.
ꢀ) 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. 14. After the water tank has drained, reconnect the pump tubing.
4) Replace the base cover and the front panel in their correct positions.
5) Remove all ice from the storage bin. Clean the storage bin liner using a neutral cleaner.
Rinse thoroughly after cleaning.
3. On water-cooled model, 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.
ꢀ) 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.
30
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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.
31
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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 91A1KN10B
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