Hoshizaki Ice Maker KMD 450MAH User Manual

Hoshizaki America, Inc.  
Hoshizaki  
Modular Crescent Cuber  
Models  
KMD-450MAH  
KMD-450MWH  
INSTRUCTION MANUAL  
“A Superior Degree  
of Reliability”  
Issued: 1-19-2009  
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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  
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. KMD-450MAH (self-contained air-cooled)  
HOSHIZAKI ICE MAKER  
MODEL NUMBER  
KMD-450MAH  
SERIAL NUMBER  
AC SUPPLY VOLTAGE  
COMPRESSOR  
115-120/60/1  
115-120V 8.6RLA 54.5LRA  
120V 0.5FLA 23W  
PUMP  
FAN  
OTHER  
120V 0.5A 63W  
115-120V  
0.15A  
15 AMPS  
15 AMPS  
15 AMPS  
15 AMPS  
MAXIMUM FUSE SIZE  
MAX. HACR BREAKER(USA ONLY)  
MAX. CIRC. BREAKER (CANADA ONLY)  
MINIMUM CIRCUIT AMPACITY  
DESIGN PRESSURE  
REFRIGERANT  
HI-467PSI LO-230PSI  
404A 1 LB 5 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. KMD-450MWH (water-cooled)  
HOSHIZAKI ICE MAKER  
MODEL NUMBER  
KMD-450MWH  
SERIAL NUMBER  
AC SUPPLY VOLTAGE  
COMPRESSOR  
115-120/60/1  
115-120V 7.8RLA 54.5LRA  
120V 0.5FLA 23W  
PUMP  
OTHER  
115-120V  
0.15A  
15 AMPS  
15 AMPS  
15 AMPS  
15 AMPS  
MAXIMUM FUSE SIZE  
MAX. HACR BREAKER(USA ONLY)  
MAX. CIRC. BREAKER (CANADA ONLY)  
MINIMUM CIRCUIT AMPACITY  
DESIGN PRESSURE  
REFRIGERANT  
HI-427PSI LO-230PSI  
404A 1 LB 1 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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B. Dimensions/Connections  
1. KMD-450MAH  
l o w e r s e t o f m o u n t i n g h o l e s i s u s e d .  
[ ꢀ 3 . 9 8 ] w h e n  
5 ꢀ [ 0 . 9 8 ] N i n o c t e r e : a s e s t o 1 0 1 .  
7
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2. KMD-450MWH  
l o w e r s e t o f m o u n t i n g h o l e s i s u s e d .  
5 ꢀ [ 0 . 9 8 ] N i n o c t e r e : a s e s t o 1 0 1 .  
[ ꢀ 3 . 9 8 ] w h e n  
8
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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 dispenser unit/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 dispenser unit or storage bin 30" wide or wider.  
The following are recommended: Hoshizaki Dispenser, Model DB-ꢀ00 or DM series;  
Hoshizaki Ice Storage Bin, Model B-500 series.  
B. How to Remove Panels  
Top Panel  
Top Insulation  
See Fig. 1  
Side  
Frame  
• Front Panel: Remove the screws.  
Lift up and towards you.  
• Top Panel: Lift up at front slightly,  
push rearward, and lift off.  
Insulation Panel (A)  
• Side Panel (R): Remove the screw.  
Slide forward slightly and lift off.  
• Insulation Panel (A): Lift up slightly,  
and pull towards you.  
Front Panel  
Screw  
Side Panel (R)  
• Top Insulation: Lift off.  
Screws  
Fig. 1  
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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, left side, and top and 1ꢀ" (30 cm) clearance at right  
side for proper air circulation and ease of maintenance and/or service should they be  
required.  
D. Setup  
CAUTION  
Do not use the side frame to lift the icemaker. See Fig.1. Lift the icemaker from  
the base.  
1) If mounting the unit on top of a dispenser, follow the dispenser's setup procedure.  
If mounting the unit on top of a storage bin, unpack the storage bin, and attach the  
4 adjustable legs provided (bin accessory) to the bottom of the storage bin.  
ꢀ) Position the dispenser unit/storage bin in the selected permanent location.  
3) Place the icemaker on top of the dispenser unit/storage bin.  
4) Secure the icemaker to the dispenser unit/  
storage bin using the ꢀ mounting brackets  
and the bolts provided. See Fig. ꢀ.  
Icemaker  
Bolts  
5) Level the icemaker and dispenser unit/  
storage bin in both the left-to-right and  
front-to-rear directions. If using a storage  
bin, adjust the storage bin legs to make the  
icemaker level.  
Mounting  
Brackets  
Fig. 2  
Bin  
10  
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Tape  
Bin Control Lead  
Pump Motor  
Connector  
E. Bin Control Installation  
1) Remove the ꢀ thumbscrews securing  
insulation panel (B), then remove insulation  
panel (B). See Fig. 3.  
Float Switch  
Connector  
Thumbscrews  
ꢀ) Disconnect the discharge hose, the drain  
valve drain hose, and the overflow drain  
hose.  
Drain Valve  
Drain Hose  
3) Disconnect the pump motor connector and  
the float switch connector from the side of  
the control box.  
Insulation  
Panel (B)  
Overflow  
Drain Hose  
Discharge  
Hose  
Bin  
Control  
4) Remove the tape securing the bin control.  
Fig. 3  
5) Remove the ꢀ thumbscrews securing the  
pump motor and float switch assembly.  
See Fig. 4.  
Thumbscrews  
Pump Motor  
and Float  
Switch  
6) Being careful not to pull the bin control  
lead, lift the bin control up out of the water  
tank. Being careful not to snag the bin  
control or bin control lead, slide the water  
tank, cube guide, and pump motor and  
float switch assembly out of the icemaker.  
Assembly  
Cube Guide  
Bin Control  
Water Tank  
Fig. 4  
7) Secure the bin control to the rear interior wall using the ꢀ thumbscrews on the rear  
interior wall and either the upper or lower set of mounting holes. For dispenser unit  
applications, the lower set of holes is recommended. When installed on a standard  
Hoshizaki storage bin, either set of holes is acceptable. Route the bin control lead vinyl  
hose through the grommet as illustrated. Do not leave any slack in the ice drop zone.  
See Fig. 5.  
8) Replace the water tank, cube guide, and pump motor and float switch assembly in their  
correct positions.  
9) Secure the pump motor and float switch assembly with the ꢀ thumbscrews.  
10) Reconnect the hoses.  
Bin Control Lead  
Grommet  
Rear  
Use Upper or Lower  
Interior  
Set of Holes  
Depending on  
Application  
Wall  
Fig. 5  
Thumbscrews  
Vinyl Hose  
Bin Control  
11  
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11) Reconnect the pump motor connector and the float switch connector.  
1ꢀ) Replace insulation panel (B) in its correct position and secure with the ꢀ thumbscrews.  
13) Replace insulation panel (A), the top insulation, and the exterior panels in their correct  
positions.  
F. Electrical Connection  
WARNING  
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. 6.  
• 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. 6.  
• The opening for the power supply connection is  
7/8" DIA to fit a 1/ꢀ" trade size conduit.  
8"3/*/(  
&-&$53*$"-ꢀ$0//&$5*0/  
5)*4ꢇ6/*5ꢇ.645ꢇ#&ꢇ(306/%&%  
'BJMVSFꢀUPꢀQSPQFSMZꢀHSPVOEꢀPSꢀXJSFꢀ  
UIJTꢀVOJUꢀDPVMEꢀSFTVMUꢀJOꢀEFBUIꢁꢀ  
TFSJPVTꢀJOKVSZꢁꢀPSꢀTFWFSFꢀEBNBHFꢀ  
UPꢀUIFꢀJDFNBLFSꢂꢀ5IFꢀXIJUFꢀMFBEꢀ  
Fig. 6  
NVTUꢀCFꢀDPOOFDUFEꢀUPꢀUIFꢀOFVUSBMꢀ  
DPOEVDUPSꢀPGꢀUIFꢀQPXFSꢀTPVSDFꢂ  
4FFꢀEJBHSBNꢀCFMPXꢂ  
ꢀꢀꢁꢂꢀꢃꢄꢅꢆꢄꢅꢀ  
+6/$5*0/ꢇ#09  
-
#308/  
/
8)*5&  
1ꢀ  
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G. Water Supply and Drain Connections  
See Fig. 7, 8, or 9  
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 drain line, dispenser unit/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,  
dispenser unit/storage bin, and water-cooled condenser (if applicable) and the floor drain.  
13  
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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.  
Icemaker  
Icemaker  
Water Supply  
Inlet  
Icemaker Water Supply Line  
Shut-Off Valve  
1/ꢀ" FPT  
Icemaker Water Supply Line  
Drain Valve  
Bin Drain Outlet  
3/4" FPT  
Icemaker  
Drain Outlet  
3/4" FPT  
Separate piping to approved drain.  
Leave a two-inch (5 cm) vertical air  
gap between the end of each pipe  
and the drain.  
Bin  
Two-inch  
(5 cm) air  
gap  
Floor  
Drain  
KMD-450MAH  
Fig. 7  
14  
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2. Water-Cooled Condenser (if applicable)  
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 1/ꢀ" 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  
Line Shut-Off Valve  
Icemaker  
Icemaker Water  
Supply Inlet  
1/ꢀ" FPT  
Condenser Water Supply Line  
Shut-Off Valve  
Condenser Water  
Supply Inlet  
1/ꢀ" FPT  
Icemaker Water Supply Line  
Drain Valve  
Condenser Water Supply Line  
Drain Valve  
Condenser  
Drain Outlet  
1/ꢀ" 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.  
Icemaker  
Drain Outlet  
3/4" FPT  
Two-inch  
(5 cm) air  
gap  
Bin Drain Outlet  
3/4" FPT  
Floor  
Drain  
Fig. 8  
KMD-450MWH  
Connection to an Open Drain System  
15  
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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 1/ꢀ" 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  
Line Shut-Off Valve  
Icemaker  
Water Supply  
Icemaker  
Condenser Water Supply Line  
Shut-Off Valve  
Inlet  
1/ꢀ" FPT  
Icemaker Water Supply Line  
Drain Valve  
Condenser  
Water Supply  
Inlet  
Condenser Return Line  
Shut-Off Valve  
1/ꢀ" FPT  
Condenser Water Supply Line  
Drain Valve  
Condenser  
Return Outlet  
1/ꢀ" 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.  
Icemaker  
Drain Outlet  
3/4" FPT  
Two-inch  
(5 cm) air  
gap  
Condenser Return Line  
Drain Valve  
Bin Drain Outlet  
3/4" FPT  
Floor  
Drain  
KMD-450MWH  
Connection to a Closed Loop System  
Fig. 9  
16  
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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  
dispenser unit/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 rear, left side, and top and 1ꢀ" (30 cm)  
clearance at right side 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?  
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) 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?  
1ꢀ) Has the warranty card been filled out and forwarded to the factory for warranty  
registration?  
17  
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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, do not leave the control switch in  
the "SERVICE" position for extended periods of time when the water tank is  
empty.  
4. At startup, confirm that all internal and external connections are free of leaks.  
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 5 minutes to fill up the  
water tank.  
6) Remove the front panel, then move the service switch to the "WASH" position. Move  
the control switch to the "SERVICE" position.  
7) Replace the front panel in its correct position and allow the icemaker to run for  
5 minutes.  
8) Remove the front panel, then move the service switch to the "DRAIN" position.  
9) Replace the front panel in its correct position and allow the icemaker to drain for  
ꢀ minutes.  
10) Turn off the power supply.  
11) Remove the front panel, then move the control switch to the "ICE" position.  
1ꢀ) Replace the front panel in its correct position.  
13) Clean the dispenser unit/storage bin liner using a neutral cleaner. Rinse thoroughly  
after cleaning.  
14) Turn on the power supply to start the automatic icemaking process.  
15) To confirm bin control operation, press the bin control's actuator paddle during the first  
5 minutes of the freeze cycle. The compressor and fan motor should de-energize within  
15 seconds, then the drain valve should energize until the water tank empties. After the  
water tank empties, the pump motor and drain valve should de-energize.  
18  
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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 dispenser unit/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, do not leave the control switch in  
the "SERVICE" position for extended periods of time when the water tank is  
empty.  
1. Cleaning Procedure  
1) Dilute 9.5 fl. oz. (ꢀ81 ml) of recommended cleaner Hoshizaki "Scale Away" or  
"LIME-A-WAY" (Economics Laboratory, Inc.) with 1.8 gal. (6.8 l) of warm water.  
ꢀ) Remove all ice from the evaporator and the dispenser unit/storage bin.  
Note: To remove cubes on the evaporator, turn off the power supply and turn it 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  
ꢀ 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.  
19  
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8) In bad or severe water conditions, clean the float switch as described below. Otherwise,  
continue to step 9.  
a. Remove the ꢀ thumbscrews securing insulation panel (B), then remove insulation  
panel (B). See Fig. 10.  
b. Disconnect the discharge hose, the drain valve drain hose, and the overflow drain  
hose.  
c. Disconnect the pump motor connector and the float switch connector from the side  
of the control box.  
d. Remove the ꢀ thumbscrews securing the pump motor and float switch assembly.  
See Fig. 11.  
e. Pull out the water tank, cube guide, and pump motor and float switch assembly  
together.  
f. Remove the screw securing the float switch to the top of the assembly. Remove the  
float switch from the assembly.  
g. Remove the retainer rod from the bottom of the float switch, then remove the float.  
Be careful not to bend the retainer rod excessively when removing it.  
h. Wipe down the float switch housing, shaft, float, and retainer rod with cleaning  
solution. Rinse the parts thoroughly with clean water.  
i. Reassemble the float switch. Replace the float 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.  
1ꢀ) 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  
ꢀ minutes.  
Pump Motor  
Connector  
Float Switch  
Connector  
Thumbscrews  
Pump Motor  
and Float  
Switch  
Thumbscrews  
Drain Valve  
Drain Hose  
Assembly  
Cube Guide  
Discharge  
Hose  
Overflow  
Drain Hose  
Water Tank  
Insulation  
Panel (B)  
Fig. 11  
Fig. 10  
ꢀ0  
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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.  
ꢀ0) Turn on the power supply to fill the water tank with water.  
ꢀ1) Turn off the power supply after 3 minutes.  
ꢀꢀ) Remove the front panel.  
ꢀ3) Move the service switch to the "WASH" position, then move the control switch to the  
"SERVICE" position.  
ꢀ4) Replace the front panel in its correct position.  
ꢀ5) Turn on the power supply to rinse off the cleaning solution.  
ꢀ6) Turn off the power supply after 5 minutes.  
ꢀ7) Remove the front panel.  
ꢀ8) Move the service switch to the "DRAIN" position.  
ꢀ9) Replace the front panel in its correct position, then turn on the power supply for  
ꢀ minutes.  
30) Turn off the power supply.  
31) Remove the front panel.  
3ꢀ) Repeat steps 18 through 31 three more times to rinse thoroughly.  
Note: If you do not sanitize the icemaker, go to step 14 in "ꢀ. Sanitizing Procedure."  
2. Sanitizing Procedure - Following Cleaning Procedure  
1) Dilute 0.9 fl. oz. (ꢀ7 ml) of a 5.ꢀ5% sodium hypochlorite solution (chlorine bleach) with  
1.8 gal. (6.8 l) of warm water.  
ꢀ) 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  
ꢀ minutes.  
11) Turn off the power supply.  
1ꢀ) 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.  
ꢀ1  
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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.  
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. Dispenser Unit/Storage Bin and Scoop  
• Wash your hands before removing ice. Use the plastic scoop provided (bin accessory).  
• The dispenser unit/storage bin is for ice use only. Do not store anything else in the  
dispenser unit/storage bin.  
• Clean the scoop and the dispenser unit/storage bin liner using a neutral cleaner. Rinse  
thoroughly after cleaning.  
3. Air Filters (self-contained 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 (self-contained air-cooled model)  
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.  
ꢀꢀ  
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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, do not leave the control switch in  
the "SERVICE" position for extended periods of time 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 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.  
ꢀ) 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  
ꢀ 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 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  
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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.  
ꢀ4  
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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 91A7BA10A  
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