Hoshizaki KM-600MAH User manual

Hoshizaki
“A Superior Degree
of Reliability”
www.hoshizaki.com
Model
KM-600MAH
Modular Crescent Cuber
Hoshizaki America, Inc.
Issued: 6-24-2008
Revised: 3-31-2010
INSTRUCTION MANUAL
™

2
IMPORTANT
Only qualied service technicians should install, service, or maintain this
icemaker. No installation, service, or maintenance should be undertaken
until the technician has thoroughly read this Instruction Manual. Likewise, the
owner/manager should not proceed to operate the icemaker until the installer
has instructed them on its proper operation. Failure to install, operate, and
maintain the equipment in accordance with this manual may adversely affect
safety, performance, component life, and warranty coverage.
Hoshizaki provides this manual primarily to assist qualied service technicians in the
installation, maintenance, and service of the icemaker.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, write, or send an e-mail message to the Hoshizaki Technical
Support Department for assistance.
HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
Phone: [phone] Technical Support
[phone]
Fax: [phone]
[phone]
E-mail: [email protected]
Web Site: www.hoshizaki.com
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
  •ModelNumber
  •SerialNumber
  •Completeanddetailedexplanationoftheproblem.

3
CONTENTS
Important Safety Information ................................................................................................. 4
I. Specications...................................................................................................................... 5
A. Nameplate Rating ......................................................................................................... 5
B. Dimensions / Connections ............................................................................................ 6
II. Installation and Operating Instructions .............................................................................. 7
A. Checks Before Installation............................................................................................. 7
B. How to Remove Panels ................................................................................................. 7
C. Location ........................................................................................................................ 8
D. Setup............................................................................................................................. 8
E. Electrical Connection .................................................................................................... 9
F. Water Supply and Drain Connections .......................................................................... 10
G. Final Checklist ............................................................................................................ 12
H. Startup ........................................................................................................................ 13
III. Cleaning and Maintenance ............................................................................................. 14
A. Cleaning and Sanitizing Instructions .......................................................................... 14
1. Cleaning Procedure................................................................................................ 15
2. Sanitizing Procedure - Following Cleaning Procedure ........................................... 16
B. Maintenance................................................................................................................ 17
C. Preparing the Icemaker for Long Storage ................................................................... 18
IMPORTANT
This manual should be read carefully before the icemaker is installed and
operated. Only qualied 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.

4
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 Indicates a situation which could result in damage to the unit.
IMPORTANT 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 re, 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, re, or severe 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 re.
•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qualiedservice
personnel to reduce the risk of electric shock, injury, or re.
•Donotmakeanyalterationstotheunit.Alterationscouldresultinelectric
shock, injury, re, or damage to the unit.

5
I. Specications
A. Nameplate Rating
1. KM-600MAH (air-cooled)
See the nameplate for electrical and refrigeration specications. 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 specications and design without prior notice.
HOSHIZAKI ICE MAKER
MODEL NUMBER KM-600MAH
SERIAL NUMBER
AC SUPPLY VOLTAGE 115-120/60/1
COMPRESSOR 115-120V 10.3RLA 70LRA
PUMP 120V 0.5FLA 10W
FAN 120V 1.0FLA 30W
OTHER 115-120V 0.2A
MAXIMUM FUSE SIZE 15 AMPS
MAX. HACR BREAKER(USA ONLY) 15 AMPS
MAX. CIRC. BREAKER (CANADA ONLY) 15 AMPS
MINIMUM CIRCUIT AMPACITY 15 AMPS
DESIGN PRESSURE HI - 467PSI LO - 230PSI
REFRIGERANT 404A 1 LB. 11 OZ.
MOTOR-COMPRESSOR THERMALLY PROTECTED,
NOT INTENDED FOR OUTDOOR USE!
Hoshizaki America, Inc.
Peachtree City, GA
www.hoshizaki.com
ICE MAKER WITHOUT
STORAGE MEANS
946Z COMPONENT

6
B. Dimensions / Connections
1. KM-600MAH
Unit: in. (mm)

7
II. Installation and Operating Instructions
WARNING
1. This icemaker must be installed in accordance with applicable national, state,
and local regulations.
2. 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lmfromthepanels.Iftheicemakerisexposedtothe
sun or to heat, remove the lm after the icemaker cools.
•Checkthattherefrigerantlinesdonotrubortouchlinesorothersurfaces,andthatthe
fan blade 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 specied on the nameplate.
•Thisicemakercanbeinstalledonastoragebin22"wideorwider.HoshizakiIce
Storage Bin, Model B-300 series is recommended. For further options, contact your
local Hoshizaki distributor.
B. How to Remove Panels
See Fig. 1
•FrontPanel:Removethescrew.Liftupand
towards you.
•TopPanel:Liftupatfrontslightly,pushrearward,
and lift off.
•SidePanel(R):Removethescrew.Slideforward
slightly, and lift off.
•InsulationPanel:Liftupslightly,andpulltowards
you.
•BaseCover:Liftupslightly,andpulltowardsyou.
Fig. 1
Top Panel
Front
Panel
Screw
Insulation
Panel
Side Panel (R)
Screw
Base Cover

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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 32°C). Operation
of the icemaker, for extended periods, outside of these normal temperature
ranges may affect icemaker performance.
2. 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32°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rm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.
2) 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 2 mounting brackets and the
bolts provided. See Fig. 2.
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.
6) Replace the panels in their correct
positions.
Fig. 2
Icemaker
Bolts
Mounting
Brackets
Bin

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E. 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, re, or severe damage to
equipment.
2. 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 re.
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.
•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.
•Theopeningforthepowersupplyconnectionis7/8"DIAtota1/2"tradesizeconduit.
Fig. 3
115-120/60/1
WARNING
ELECTRICAL CONNECTION
THIS UNIT MUST BE GROUNDED
Failure to properly ground or wire
this unit could result in death,
serious injury, or severe damage
to the icemaker. The white lead
must be connected to the neutral
conductor of the power source.
See diagram below.
4Axxxx-010Based on 435005
JUNCTION BOX
1
15-120V
BROWN
WHITE
L
N

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F. Water Supply and Drain Connections
See Fig. 4
WARNING
1. Water supply and drain connections must be installed in accordance with
applicable national, state, and local regulations.
2. Normal operating water temperature should be within 45°F to 90°F (7°C
to 32°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lters,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)andstoragebindrainlinemustberun
separately.
•Drainlinesmusthave1/4"fallperfoot(2cmper1m)onhorizontalrunstogetagood
ow. A vented tee connection is also required for proper ow.
•Drainlinesshouldnotbepipeddirectlytothesewersystem.Anairgapofaminimumof
2 vertical inches (5 cm) should be between the end of the drain pipes from the icemaker
and condensation drain, storage bin, and the oor drain.

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1. Icemaker
•Icemakerwatersupplyinletis1/2"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pipe.Thecondensation
drain line can be connected to the icemaker drain line or can be run separately.
Fig. 4
KM-600MAH
Separate piping to approved drain.
Leave a two-inch (5 cm) vertical air
gap between the end of each pipe
and the drain.
Icemaker Water Supply Line
Shut-OffValve
Icemaker Water Supply Line
DrainValve
Icemaker
Icemaker
Water Supply
Inlet
1/2"FPT
Bin Drain Outlet
3/4"FPT
Two-inch
(5 cm) air
gap
Floor Drain
Icemaker
Drain Outlet
3/4"FPT Bin
Condensation
Drain Outlet
3/8"ODPipe

12
G. Final Checklist
WARNING
CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after installation. Make sure that none have fallen into the
storage bin.
1) Is the icemaker level?
2) Is the icemaker in a site where the ambient temperature is within 45°F to 100°F (7°C to
38°C) and the water temperature within 45°F to 90°F (7°C to 32°C) all year around?
3)Isthereatleast6"(15cm)clearanceat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?
8) Are the water supply line shut-off valve and drain valve 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 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?
12) Has the warranty card been lled out and forwarded to the factory for warranty
registration?

13
H. Startup
WARNING
1. All parts are factory-adjusted. Improper adjustments may adversely affect
safety, performance, component life, and warranty coverage.
2. 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, conrm that all internal and external connections are free of leaks.
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) 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. 5.
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.
12) To conrm bin control operation, press and hold the bin control's actuator paddle during
the rst 5 minutes of the freeze cycle. The icemaker should shut down in approximately
15 seconds.
Fig. 5
Disconnect This
End of Pump
Tubing to Drain
Water Tank
Base Cover

14
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.
2. 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
ow 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.
2. 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
Normal Icemaking Operation
OPEN
Cleaning and Sanitizing Operation
(allows solution ow to the inside
of the evaporator)

15
1. Cleaning Procedure
1)Dilute16.oz.(473ml)ofHoshizaki"ScaleAway"with3gal.(11l)ofwarmwater.
2) 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. 5. After the water tank has drained, reconnect the pump tubing.
6) In bad or severe water conditions, clean the oat switch assembly as described below.
Otherwise, continue to step 7.
a. Disconnect the vent tube and the ush tube from the top of the oat switch, then
remove the oat switch assembly. Remove the rubber boot from the bottom of the
assembly.
b. Remove the retainer rod from the bottom of the oat switch housing, then remove
the oat. Be careful not to bend the retainer rod excessively when removing it.
c. Wipe down the oat switch housing, shaft, oat, 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 oat switch assembly and replace it and the rubber boot in their
correct positions. Reconnect the vent tube and the ush 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.
12) 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 ll the water tank with water.
19) Turn off the power supply after 3 minutes.
20) Remove the front panel and fully open the cleaning valve.
21)Movethecontrolswitchtothe"WASH"position.

16
22) Replace the front panel in its correct position.
23) Turn on the power supply to rinse off the cleaning solution.
24) Turn off the power supply after 5 minutes.
25) Remove the front panel.
26) Disconnect one end of the pump tubing to drain the water tank. After the water tank has
drained, reconnect the pump tubing.
27) Repeat steps 15 through 26 three more times to rinse thoroughly.
Note:Ifyoudonotsanitizetheicemaker,gotostep10in"2.SanitizingProcedure."
2. Sanitizing Procedure - Following Cleaning Procedure
1) Dilute a 5.25% sodium hypochlorite solution (chlorine bleach) with warm water. (Add
1.5 . oz. (44 ml) of sanitizer to 3 gal. (11 l) of water.)
2) 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26in"1.CleaningProcedure"twotimestorinsethoroughly.
10) Close the cleaning valve.
11)Movethecontrolswitchtothe"ICE"position.
12) 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.

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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 qualied service technicians should attempt to service or maintain this
icemaker.
2. 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 lters remove dirt and dust from the air, and keep the condenser from
getting clogged. As the lters get clogged, the icemaker's performance will be reduced.
Check the lters at least twice a month. When clogged, use warm water and a neutral
cleaner to wash the lters.
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.

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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.
2. 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.
2)Movethecontrolswitchonthecontrolboxtothe"OFF"position.
3) Close the icemaker water supply line shut-off valve, then open the icemaker water
supply line drain valve.
4) Allow the line to drain by gravity.
5) Attach 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.
2)Movethecontrolswitchtothe"OFF"position.
3) Remove the base cover, then disconnect one end of the pump tubing to drain the water
tank. See Fig. 5. 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.

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618 Hwy. 74 S., Peachtree City, GA 30269 USA TEL [phone] FAX [phone] www.hoshizaki.com 91A1KQ10C
HOSHIZAKI AMERICA, INC.