Reliability is a
beautiful thing
TM
SELF-CONTAINED
CRESCENT CUBER
KM-250BAF
KM-250BWF
INSTRUCTION MANUAL
™
ISSUED: March 14, 2000
REVISED: December 22, 2004
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• Please review this manual. It should be read carefully before the icemaker is installed
and operated. Only qualified service technicians should install, service and maintain
the icemaker. This manual should be made available to the technician prior to
installation, maintenance or service.
• Keep this manual with the icemaker for later reference.
CONTENTS
I. Specifications .................................................................................................................... 4
1. Nameplate Rating ........................................................................................................ 4
[a] KM-250BAF (air-cooled)........................................................................................ 4
[b] KM-250BWF (water-cooled) .................................................................................. 5
2. Dimensions/Connections ............................................................................................. 6
[a] KM-250BAF........................................................................................................... 6
[b] KM-250BWF.......................................................................................................... 7
II. Installation and Operating Instructions .............................................................................. 8
1. Checks Before Installation............................................................................................ 8
2. Location........................................................................................................................ 9
3. Electrical Connection ................................................................................................... 9
4. Water Supply and Drain Connections......................................................................... 10
5. Final Check List.......................................................................................................... 12
6.Startup........................................................................................................................ 13
7. Preparing the Icemaker for Long Storage ................................................................... 14
III. Cleaning and Maintenance ............................................................................................ 16
1. Cleaning and Sanitizing Instructions .......................................................................... 16
[a] Cleaning Solution................................................................................................ 16
[b] Cleaning Procedure ............................................................................................ 16
[c] Sanitizing Solution............................................................................................... 18
[d] Sanitizing Procedure ........................................................................................... 18
2. Maintenance............................................................................................................... 20
3
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I. Specifications
1. Nameplate Rating
[a] KM-250BAF (air-cooled)
See the nameplate for electrical and refrigeration
specifications. This nameplate is located on the upper
right hand side of the rear panel.
Since this nameplate is located on the rear panel of the
icemaker,itcannotbereadwhenthebackoftheicemaker
is against a wall or against another piece of kitchen
equipment. Therefore, the necessary electrical and
refrigerationinformationisalsoontheratinglabel, 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.
4
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[b] KM-250BWF (water-cooled)
See the nameplate for electrical and refrigeration
specifications. This nameplate is located on the upper
right hand side of the rear panel.
Since this nameplate is located on the rear panel of the
icemaker,itcannotbereadwhenthebackoftheicemaker
is against a wall or against another piece of kitchen
equipment. Therefore, the necessary electrical and
refrigerationinformationisalsoontheratinglabel, 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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Units: millimeters
(inches)
2. Dimensions/Connections
[a] KM-250BAF
6
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Units: millimeters
(inches)
[b] KM-250BWF
7
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II. Installation and Operating Instructions
1. Checks Before Installation
IMPORTANT
1. Remove shipping cartons, tape(s) and packing. If any are left in the
icemaker, it will not work properly.
2. Ensure all components, fasteners and thumbscrews are securely in place.
1) Remove the top panel and the front panel to prevent damage when installing the
icemaker.
2) Remove the package containing the accessories.
3) 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.
4) Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blade turns freely.
5) Check that the compressor is snug on all mounting pads.
6) See the nameplate on the rear panel, and check that your voltage supplied corresponds
with the voltage specified on the nameplate.
8
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2. Location
IMPORTANT
This icemaker is not intended for outdoor use. Normal operating ambient
temperature should be within +45°F (7°C) to +100°F (38°C); Normal
operating water temperature should be within +45°F (7°C) to +90°F (32°C).
Operation of the icemaker, for extended periods, outside of these normal
temperature ranges may affect production capacity.
For best operating results:
• Icemaker should not be located next to ovens, grills or other high heat producing
equipment.
• Level the icemaker from side-to-side and front-to-rear by adjusting the legs. Location
should provide a firm and level foundation for the equipment.
• Allow 6" (15 cm.) clearance at rear and top for ease of maintenance and/or service should
they be required.
3. Electrical Connection
• This icemaker must have a separate power supply or receptacle of proper capacity. See
the nameplate.
• Usually an electrical permit and services of a licensed electrician are required.
9
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4. Water Supply and Drain Connections
See Fig. 1
CAUTION
To prevent damage to the equipment, do not operate the icemaker when the
water supply is OFF, or if the pressure is below 10 PSIG (0.7 bar). Do not
run the icemaker until the proper water pressure is reached.
• Water supply inlet is 1/2" FPT.
Note: On water-cooled model, two water supply inlets are provided. One is the ice
making water inlet, and the other (1/2" FPT) is the cooling water inlet.
• A water supply line shut-off valve and drain valve should be installed. A minimum of 3/8"
OD copper tubing is recommended for the water supply lines.
• Water supply pressure should be a minimum of 10 PSIG (0.7 bar) and a maximum of 113
PSIG(7.5bar). Ifthepressureexceeds113PSIG(7.5bar), theuseofapressurereducing
valve is required.
• Drain outlet for icemaker dump is 3/4" FPT. The bin drain is 3/4" FPT. The icemaker drain
and the condenser drain piping connections must be made separately from the bin drain.
Note: On water-cooled model, a 1/2" FPT is provided for the condenser drain outlet.
• The drains must have 1/4" fall per foot (2 cm. per meter) on horizontal runs to get a good
flow.
• The drains should not be piped directly to the sewer system. An air gap of a minimum of
2 vertical inches ( 5 cm.) should be between the end of the drain pipe from the icemaker
or the ice bin and the floor drain.
• This icemaker should be installed in accordance with applicable national, state and local
regulations.
• A plumbing permit and services of a licensed plumber may be required in some areas.
• In some areas, a back flow preventer may be required in the cooling water circuit.
10
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KM-250BAF
KM-250BWF
Fig. 1
11
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5. Final Check List
1) Is the icemaker level?
2) Is the icemaker in a site where the ambient temperature is within +45°F (7°C) to +100°F
(38°C) and the water temperature within +45°F (7°C) to +90°F (32°C) all year around?
3)Isthereatleast6"(15cm.)clearanceat therearandtopoftheicemakerformaintenance
or service?
4) Have all shipping cartons, tape(s) and packing been removed from the icemaker? Is the
cube guide in its correct position?
5) Are all components, fasteners and thumbscrews securely in place?
6) Have all electrical and piping connections been made?
7) Has the power supply voltage been checked or tested against the nameplate rating?
And has a proper ground been installed in the icemaker?
8) Are the water supply line shut-off valve and drain valve installed? Has the water supply
pressurebeencheckedtoensureaminimumof10PSIG(0.7bar)andamaximumof113
PSIG (7.5 bar)?
Note: The icemaker may stop running when the water supply is OFF, or if the
pressure is below 10 PSIG (0.7 bar). When the proper water pressure is
reached, the icemaker automatically starts running again.
9) Have the compressor hold-down bolts and refrigerant lines been checked against
vibration and possible failure?
10) Has the bin control switch been checked for correct operation? When the icemaker is
running, hold an ice cube in contact with the bulb. The icemaker should stop within 6
to 10 seconds.
11) 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?
12) Has the end user been given the name and telephone number of an authorized service
agent?
13) Has the warranty tag been filled out and forwarded to the factory for warranty
registration?
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6. Startup
CAUTION
1. All parts are factory-adjusted. Improper adjustments may result in failure.
2. If the unit is turned off, wait for at least 3 minutes before restarting the
icemaker to prevent damage to the compressor.
1) Open the water supply line shut-off valve.
2) Remove the front panel.
3) Move the control switch on the control box, to the “ICE” position.
4) Run the icemaker for about 10 minutes, and move the switch to the “OFF” position.
5) Open the door.
6) Remove the plug at the bottom of the water tank to drain the water tank. See Fig. 2.
7) Replace the plug in its correct position.
8) Clean the storage bin.
9) Move the switch to the “ICE” position, and start the automatic icemaking process.
10) Replace the front panel in its correct position.
11) Shut the door.
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7. Preparing the Icemaker for Long Storage
IMPORTANT
When shutting off the icemaker for an extended time, drain out all water from
the water line and remove the ice from the storage bin. The storage bin
should be cleaned and dried. Drain the icemaker, using air or carbon
dioxide, to prevent damage to the water supply line at sub-freezing
temperatures. Shut off the icemaker until the proper ambient temperature is
resumed.
• Whentheicemakerisnotusedfortwoorthreedays, itissufficienttoonlymovethecontrol
switch to the “OFF” position, unless the icemaker will be at sub-freezing temperatures.
[1] On water-cooled model only, first remove the water from the water-cooled condenser:
1) Remove the front panel.
2) Move the control switch on the control box to the “OFF” position.
3) Wait 3 minutes.
4) Move the control switch to the “ICE” position.
5) Allow 5 minutes for the icemaker to fill with water and the water pump to start operating.
6) Close the water-cooled condenser water supply line shut-off valve. See Fig. 1.
7) Open the drain valve for the water-cooled condenser water supply line.
8) Allow the line to drain by gravity.
9)Attachcompressedairorcarbondioxidesupplytothecondenserwaterlinedrainvalve.
10) Blow the water-cooled condenser out using compressed air or carbon dioxide until
water stops coming out.
[2] Remove the water from the potable water supply line:
1) Remove the front panel. (Except water-cooled model)
2) Move the control switch on the control box to the “OFF” position.
3) Wait 3 minutes.
4) Close the potable water supply line shut-off valve and open the potable water supply
line drain valve. See Fig. 1.
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5) Allow the line to drain by gravity.
6) Attach compressed air or carbon dioxide supply to the potable water line drain valve.
7) Move the control switch to the “ICE” position.
8) Blow the potable water line out using compressed air or carbon dioxide.
[3] Drain the potable water tank:
1) Disconnect the power supply.
2) Move the control switch to the “OFF” position.
3) Open the door.
4) Remove the plug at the bottom of the water tank to drain the water tank.
5) Replace the plug in its correct position.
6) Remove all ice from the storage bin, and clean the storage bin.
7) Shut the door.
8) Replace the front panel in its correct position.
9) Close the drain valve.
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III. Cleaning and Maintenance
IMPORTANT
Ensure all components, fasteners and thumbscrews are securely in place
after any maintenance or cleaning is done to the equipment.
1. Cleaning and Sanitizing Instructions
WARNING
1. HOSHIZAKI recommends cleaning this unit at least once a year. More
frequent cleaning, however, may be required in some existing water
conditions.
2. To prevent injury to individuals and damage to the icemaker, do not use
ammonia type cleaners.
3. Always wear liquid-proof gloves to prevent the cleaning and sanitizing
solutions from coming into contact with skin.
[a] Cleaning Solution
Dilute 7 fl. oz. (207 ml) of recommended cleaner Hoshizaki “Scale Away" or “LIME-A-
WAY" (Economics Laboratory, Inc.) with 1.3 gallons (4.9 l) of warm water.
IMPORTANT
For safety and maximum effectiveness, use the solution immediately after
dilution.
[b] Cleaning Procedure
The cleaning process will remove lime deposits from the water system.
1) Remove the front panel.
2) Remove all ice from the evaporator and the storage bin.
Note: To remove cubes on the evaporator, move the control switch to the “OFF"
position and move it back to the “ICE" position after 3 minutes. The defrost
cycle starts and the cubes will be removed from the evaporator.
3) Move the control switch to the “OFF” position. Open the door.
16
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4) Remove the plug at the bottom of the water
tank to drain the tank. See Fig. 3. After
draining, replace the plug in its correct
position.
5) Pull out the cap at the front of the plastic
body 1" or more. See Fig. 4.
6) Pour the cleaning solution into the water
tank.
7) Replace the cap in its correct position.
8) Move the control switch to the “WASH”
position. Close the door.
9) After 30 minutes, move the control switch to
the “OFF” position.
10) Remove the plug to drain the water tank.
After draining, replace the plug in its
correct position.
11) Move the control switch to the “ICE”
position to fill the water tank with water.
12) After 3 minutes, move the control switch to
the “OFF” position.
13) Move the control switch to the “WASH” position.
14) After 5 minutes, move the control switch to the “OFF” position.
15) Remove the plug to drain the water tank. After draining, replace the plug in its correct
position.
16) Repeat 11) through 15) three more times to rinse thoroughly.
17) Remove the thermostat bracket and the water tank from the bin by removing the two
thumbscrews for each at the top of the bin, and disconnect one end of the overflow
drain hose. See Fig. 3.
18) Mix a new batch of the cleaning solution.
19) Wash the bin liner, the thermostat bracket, the water tank bracket and the water tank
using a nylon scouring pad, brushes and the cleaning solution.
20) Rinse the parts in the previous step thoroughly with water.
17
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[c] Sanitizing Solution
Dilute 1 fl. oz. (30 ml or 2 tbs) of 5.25% sodium hypochlorite solution (chlorine bleach)
with 2 gallons (7.6 l) of warm water. Using a chlorine test strip or other method, confirm
that you have a concentration of about 200 ppm.
IMPORTANT
For safety and maximum effectiveness, use the solution immediately after
dilution.
[d] Sanitizing Procedure
The sanitizing process will sanitize the icemaker.
1) Wash the bin liner, thermostat bracket, water tank, overflow pipe, O-ring, and overflow
cap using the sanitizing solution. If possible, soak the water tank, overflow pipe and
overflow cap in the sanitizing solution in a clean container for 10 minutes.
2) Discard the sanitizing solution and rinse the parts in the previous step thoroughly with
water.
3) Replace the parts in their correct positions.
Note: Be sure to correctly replace the overflow-pipe O-ring to prevent leaks.
4) Pull out the cap at the front of the plastic body 1" or more.
5) Mix a new batch of the sanitizing solution and pour it into the water tank.
6) Replace the cap in its correct position.
7) Allow the sanitizer to sit for 10 minutes.
8) Move the control switch to the “WASH” position.
9) Close the door.
10) After 15 minutes, move the control switch to the “OFF” position.
11) Open the door.
12) Remove the plug to drain the water tank. After draining, replace the plug in its correct
position.
13) Repeat 5) through 12) one time then go to 14).
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14) Move the control switch to the “ICE” position to fill the water tank with water.
15) After 3 minutes, move the control switch to the “OFF” position.
16) Move the control switch to the “WASH” position.
17) After 5 minutes, move the control switch to the “OFF” position.
18) Remove the plug to drain the water tank. After draining, replace the plug in its correct
position.
19) Repeat 14) through 18) two times to rinse thoroughly.
20) Flush the storage bin with water.
21) Move the control switch to the “ICE” position, and start the automatic icemaking
process.
22) Replace the front panel in its correct position, and close the door.
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2. Maintenance
IMPORTANT
This icemaker must be maintained individually, referring to the instruction
manual and labels provided with the icemaker.
1) Exterior Panels
Tokeeptheexteriorclean, wipeoccasionallywithacleanandsoftcloth. Useadamp
cloth containing a neutral cleaner to wipe off oil or dirt build up.
2) Storage Bin and Scoop
•Washyourhandsbeforeremovingice. Usetheplasticscoopprovided(Accessory).
• The storage bin is for ice use only. Do not store anything else in the bin.
• Keep the scoop clean. Clean it by using a neutral cleaner and rinse thoroughly.
• Clean the bin liner by using a neutral cleaner. Rinse thoroughly after cleaning.
3) Air Filter (air-cooled model only)
The plastic mesh air filter located behind the louver removes dirt or dust from the air,
and keeps the condenser from getting clogged. As the filter gets clogged, the
icemaker’s performance will be reduced. Check the filter at least twice a month.
When it is clogged, use warm water and a neutral cleaner to wash the filter.
4) Condenser (air-cooled model only)
Check the condenser once a year and clean if required by using a brush or vacuum
cleaner. More frequent cleaning may be required depending on the location of the
icemaker.
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HOSHIZAKI
HOSHIZAKI AMERICA,INC.
618 HIGHWAY 74 SOUTH
PEACHTREE CITY, GA 30269
U.S.A.
PHONE: 770-487-2331
91A1AQ10D
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