Hoshizaki KM-1600MRH User manual

™
INSTRUCTION MANUAL
ISSUED: FEB. 28, 2001
KM-1600MRH
KM-1600MRH3
MODULAR CRESCENT CUBER
Reliability is a
beautiful thingTM
REVISED: DEC. 11, 2003

2
HOSHIZAKI AMERICA, INC.
618Highway74South
PeachtreeCity,Georgia 30269
Attn: HOSHIZAKITechnicalSupportDepartment
Phone: [phone]TechnicalService
[phone]
Fax: [phone]
NOTE:NOTE:
NOTE:NOTE:
NOTE: Toexpedite assistance, all correspondence/communication MUST include the
followinginformation:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem
Only qualified service technicians should attempt to 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.
HOSHIZAKI provides this manual primarily to assist qualified 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 or write HOSHIZAKI Technical Support for assistance.
IMPORTANTIMPORTANT
IMPORTANTIMPORTANT
IMPORTANT

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CONTENTSCONTENTS
CONTENTSCONTENTS
CONTENTS PAGE
I. SPECIFICATIONS ..................................................................................................4
1. NAMEPLATE RATING .........................................................................................4
[a] KM-1600MRH (Remote Air-cooled).................................................................4
[b] KM-1600MRH3 (Remote Air-cooled)...............................................................5
2. DIMENSIONS/CONNECTIONS ...........................................................................6
II. INSTALLATION AND OPERATING INSTRUCTIONS...........................................7
1. CHECKS BEFORE INSTALLATION....................................................................7
2. HOW TO REMOVE PANELS ...............................................................................7
3. LOCATION ...........................................................................................................8
4. SET UP ................................................................................................................8
5. ELECTRICAL CONNECTION............................................................................10
6. INSTALLATION OF REMOTE CONDENSER UNIT ..........................................11
[a] CHECKS BEFORE INSTALLATION.............................................................11
[b] LOCATION ....................................................................................................11
[c] SET UP..........................................................................................................12
[d] ELECTRICAL CONNECTION.......................................................................13
[e] STACKING CONDENSER UNIT ..................................................................14
7. WATER SUPPLY AND DRAIN CONNECTIONS ..............................................15
8. FINAL CHECK LIST ...........................................................................................17
9. START UP..........................................................................................................18
10. PREPARING THE ICEMAKER FOR LONG STORAGE....................................19
III. CLEANING AND MAINTENANCE INSTRUCTIONS..........................................21
1. CLEANING INSTRUCTIONS .............................................................................21
[a] CLEANING PROCEDURE.............................................................................22
[b] SANITIZING PROCEDURE...........................................................................23
2. MAINTENANCE INSTRUCTIONS .....................................................................25
• Pleasereviewthismanual. Itshouldbereadcarefullybeforetheicemakerisinstalledand
operated.Onlyqualifiedservicetechniciansshouldinstall,serviceandmaintainthe
icemaker. Thismanualshouldbemadeavailabletothetechnicianpriortoinstallation,
maintenanceorservice.
• Keepthismanualwiththeicemakerforlaterreference.

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I. SPECIFICATIONSI. SPECIFICATIONS
I. SPECIFICATIONSI. SPECIFICATIONS
I. SPECIFICATIONS
1. NAMEPLATE RATING1. NAMEPLATE RATING
1. NAMEPLATE RATING1. NAMEPLATE RATING
1. NAMEPLATE RATING
[a] KM-1600MRH (Remote Air-cooled)[a] KM-1600MRH (Remote Air-cooled)
[a] KM-1600MRH (Remote Air-cooled)[a] KM-1600MRH (Remote Air-cooled)
[a] KM-1600MRH (Remote Air-cooled)
See the Nameplate for electrical and refrigeration specifi-
cations. ThisNameplateislocatedontheupperrighthand
side of 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,thenecessaryelectricalandrefrig-
erationinformationisalsoontheratinglabel,whichcanbe
easily seen by removing only the front panel of the ice-
maker.
We reserve the right to make changes in specifications and design without prior notice.

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[b] KM-1600MRH3 (Remote Air-cooled)[b] KM-1600MRH3 (Remote Air-cooled)
[b] KM-1600MRH3 (Remote Air-cooled)[b] KM-1600MRH3 (Remote Air-cooled)
[b] KM-1600MRH3 (Remote Air-cooled)
See the Nameplate for electrical and refrigeration specifi-
cations. ThisNameplateislocatedontheupperrighthand
side of 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,thenecessaryelectricalandrefrig-
erationinformationisalsoontheratinglabel,whichcanbe
easily seen by removing only the front panel of the ice-
maker.
We reserve the right to make changes in specifications and design without prior notice.

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2. DIMENSIONS/CONNECTIONS2. DIMENSIONS/CONNECTIONS
2. DIMENSIONS/CONNECTIONS2. DIMENSIONS/CONNECTIONS
2. DIMENSIONS/CONNECTIONS
units: mm. (inches)

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II. INSTALLATION AND OPERATING INSTRUCTIONSII. INSTALLATION AND OPERATING INSTRUCTIONS
II. INSTALLATION AND OPERATING INSTRUCTIONSII. INSTALLATION AND OPERATING INSTRUCTIONS
II. INSTALLATION AND OPERATING INSTRUCTIONS
1. CHECKS BEFORE INSTALLATION1. CHECKS BEFORE INSTALLATION
1. CHECKS BEFORE INSTALLATION1. CHECKS BEFORE INSTALLATION
1. CHECKS BEFORE INSTALLATION
IMPORTANTIMPORTANT
IMPORTANTIMPORTANT
IMPORTANT
1.Remove shippingcarton, tape(s)and packing. Ifpacking material is left in
the icemaker, it will not work properly.
2.Ensure all components, fasteners and thumbscrews aresecurelyinplace.
1)Remove thepanels toprevent damagewhen installingthe icemaker. (See“2. HOWTO
REMOVE PANELS.”)
2) Remove the package containing the accessories.
3)Removetheprotectiveplasticfilmfromthepanels. Iftheicemakerisexposedtothesun
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.
5) Check that the Compressor is snug on all mounting pads.
6)SeetheNameplateontheRearPanel,andcheckthatyourvoltagesuppliedcorresponds
with the voltage specified on the Nameplate.
7) This icemaker needs a storage bin. The recommended storage bin is HOSHIZAKI ICE
STORAGE BIN, Model B-500 series.
8) A remote condenser unit is needed. The recommended remote condenser unit is
HOSHIZAKI CONDENSER UNIT, Model URC-20F.
2. HOW TO REMOVE PANELS - See Fig. 12. HOW TO REMOVE PANELS - See Fig. 1
2. HOW TO REMOVE PANELS - See Fig. 12. HOW TO REMOVE PANELS - See Fig. 1
2. HOW TO REMOVE PANELS - See Fig. 1
a) Front Panel ......... Remove the screw.
Lift up and pull toward you.
b) Top Panel............ Lift up slightly its front, push
away, and then lift off.
c) Side Panel (R)..... Remove the screw.
Pull slightly toward you, and
lift off.
d) Insulation Panel... Lift up slightly,and pulltoward you.
Note: If the Top Panel is still on, first lift it and slide it to the back
slightly.
Fig. 1Fig. 1
Fig. 1Fig. 1
Fig. 1

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3. LOCATION3. LOCATION
3. LOCATION3. LOCATION
3. LOCATION
WARNINGWARNING
WARNINGWARNING
WARNING
This icemaker is not intended for outdoor use. Normal operating ambient
temperature should be within +45°F to +100°F; Normal operating water
temperatureshouldbewithin+45°Fto+90°F. Operation oftheicemaker,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.
• Location should provide a firm and level foundation for the equipment.
•Allow6"clearanceatrear,sidesandtopforproperaircirculationandeaseofmaintenance
and/or service should they be required.
4. SET UP4. SET UP
4. SET UP4. SET UP
4. SET UP
1) Unpack the Storage Bin, and attach the four adjustable legs provided (bin accessory) to
the bottom of the Storage Bin.
2) Position the Storage Bin in the selected permanent position.
3) Place the icemaker on top of the Storage Bin.
4) Secure the icemaker to the Storage Bin by using the two Universal Braces and the two
bolts provided. See Fig. 2.
Fig. 2Fig. 2
Fig. 2Fig. 2
Fig. 2

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CAUTIONCAUTION
CAUTIONCAUTION
CAUTION
Before operating the icemaker, the Bin Control Thermostat Bulb must be set
correctly.
5) Set the Bin Control Thermostat Bulb as follows. See Fig. 3.
(a) Take off the shipping tape securing the Thermostat Bulb Holder. Remove the
ThermostatBulbHolderfromtheShippingHookbyliftingitupandshiftingtotheright.
(b) Slide the Thermostat Bulb Holder down through the hole located in the bottom of the
icemaker until it is placed in the Bracket.
(c)InsertthePlugintotheReceptacleontheHolder. ChecktoseethatthePlugislocked
into the Receptacle.
6)Leveltheicemaker/StorageBininboththeleft-to-rightandfront-to-reardirections. Adjust
the Ice Bin Legs to make the icemaker level.
7) Replace the panels in their correct positions.
Shipping Hook
Fig. 3Fig. 3
Fig. 3Fig. 3
Fig. 3

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5. ELECTRICAL CONNECTION5. ELECTRICAL CONNECTION
5. ELECTRICAL CONNECTION5. ELECTRICAL CONNECTION
5. ELECTRICAL CONNECTION
WARNINGWARNING
WARNINGWARNING
WARNING
1.Electrical connection must be made in accordance with theinstructionson
a “WARNING” tag, provided with the pig tail leads in the Junction Box.
2.Thisicemakerrequiresagroundthatmeetsthenationalandlocalelectrical
code requirements. To prevent possible electrical shock to individuals or
extensive damage to the equipment, install a proper ground wire to the
icemaker.
•On three phase models, the Voltage Tap Switchin the unit should be positioned to match
incoming voltage at start-up. See Fig. 4.
•Onsinglephasemodels,thewhiteleadmustbeconnectedtotheneutralconductorofthe
power source. Miswiring results in severe damage to the icemaker. See Fig. 5.
• This icemaker must have a separate power supply or receptacle of proper capacity. See
the Nameplate.
• The opening for the power supply connection is 7/8" DIA to fit a 1/2" trade size conduit.
• Usually an electrical permit and services of a licensed electrician are required.
Fig. 4Fig. 4
Fig. 4Fig. 4
Fig. 4 Fig. 5Fig. 5
Fig. 5Fig. 5
Fig. 5

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6. INSTALLATION OF REMOTE CONDENSER UNIT6. INSTALLATION OF REMOTE CONDENSER UNIT
6. INSTALLATION OF REMOTE CONDENSER UNIT6. INSTALLATION OF REMOTE CONDENSER UNIT
6. INSTALLATION OF REMOTE CONDENSER UNIT
[a] CHECKS BEFORE INSTALLATION[a] CHECKS BEFORE INSTALLATION
[a] CHECKS BEFORE INSTALLATION[a] CHECKS BEFORE INSTALLATION
[a] CHECKS BEFORE INSTALLATION
1) Unpack and remove shipping carton, tape(s) and packing.
2) Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blade turns freely.
[b] LOCATION[b] LOCATION
[b] LOCATION[b] LOCATION
[b] LOCATION
The 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 24" clearance on both front and rear for ease of
maintenance and service should they be required.
• Normal condenser ambient temperature: -20°F to +122°F. Temperatures not within this
operating range may affect the production capacity of the icemaker.
• The maximum line length for the standard refrigerant charge is 66 feet. Should an
installationrequirealongerlinelength,pleasecall1-800-233-1940forrecommendations
concerning the correct additional refrigerant charge to be added.
Note: If the recommended guidelines of the installation are exceeded, the icemaker
performance may be reduced.
Fig. 6Fig. 6
Fig. 6Fig. 6
Fig. 6
Air Air

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[c] SET UP[c] SET UP
[c] SET UP[c] SET UP
[c] SET UP
1)SecuretheLegstothecondenserunitwitheightM8x16mm.HexagonBoltsandM8Nuts
as shown in the illustration. See Fig. 7.
Note: Locate the Legs symmetrically.
2) The Legs have eight mounting holes. Secure the Legs with eight bolts (not included).
3) Install enough length of two copper tubings provided with Aeroquip couplings between
the icemaker and the condenser unit. The two copper tubings should be insulated
separately. See Fig. 8.
• A connector kit “OS-QUICK” is available for field-fabricated lines from HOSHIZAKI
AMERICA .
• R-404A precharged tubing kits, available as optional equipment, are recommended.
4) Line sets fabricated in the field should be evacuated through the charging ports on the
Aeroquip couplings and charged with R-404A refrigerant vapor to a pressure of 15 - 30
PSIG.
Note: Factory fabricated tubing kits are precharged and do not need to be evacuated.
5)Remove the plastic caps protecting the couplings. Attachthe tworefrigerant linesto the
male couplings on the icemaker and the remote condenser unit. Each refrigerant line
must be connected as follows:
Icemaker discharge refrigerant line - 5/8" OD tubing to “DIS” of condenser unit
Icemaker liquid refrigerant line - 3/8" OD tubing to “LIQ” of condenser unit
Note: Care should be taken that the unit, line set and Condenser contain the same
type refrigerant prior to making connections. Mixing of refrigerants will result
in improper operation and possible damage to the refrigeration system.
Make the connections at the remote condenser first and then at the icemaker.
Fig. 7Fig. 7
Fig. 7Fig. 7
Fig. 7 Fig. 8Fig. 8
Fig. 8Fig. 8
Fig. 8

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[d] ELECTRICAL CONNECTION[d] ELECTRICAL CONNECTION
[d] ELECTRICAL CONNECTION[d] ELECTRICAL CONNECTION
[d] ELECTRICAL CONNECTION
WARNINGWARNING
WARNINGWARNING
WARNING
This remote condenser unit requires a ground that meets the national and
local electrical code requirements. To prevent possible electrical shock to
individualsorextensivedamagetoequipment,installapropergroundwireto
this condenser unit.
• This condenser unit must be connected to the Fan Motor Junction Box on the icemaker.
• The opening for the power supply connection is 7/8" DIA to fit a 1/2" trade size conduit.
• Usually an electrical permit and services of a licensed electrician are required.
1) Remove the Panel.
2) Remove the Junction Box Cover.
3)ConnecttheFanMotorleadsintheJunctionBoxoftheremotecondenserunittotheFan
Motor leads in the Junction Box of the HOSHIZAKI remote air-cooled icemaker.
4) Install a ground wire from the icemaker to the remote condenser unit.
5) Place the Junction Box Cover and the Panel in position.
Fig. 9Fig. 9
Fig. 9Fig. 9
Fig. 9

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[e] STACKING CONDENSER UNIT[e] STACKING CONDENSER UNIT
[e] STACKING CONDENSER UNIT[e] STACKING CONDENSER UNIT
[e] STACKING CONDENSER UNIT
1) Secure the lower condenser unit to the Legs with eight bolts (not included).
2) Attach the upper condenser unit on the top of the lower.
3) Secure the upper condenser unit with the four screws provided.
4) Install refrigerant lines, and make electrical connection for each Fan Motor as shown in
Items [c] and [d].
Fig. 10Fig. 10
Fig. 10Fig. 10
Fig. 10

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7. WATER SUPPLY AND DRAIN CONNECTIONS - See Fig. 117. WATER SUPPLY AND DRAIN CONNECTIONS - See Fig. 11
7. WATER SUPPLY AND DRAIN CONNECTIONS - See Fig. 117. WATER SUPPLY AND DRAIN CONNECTIONS - See Fig. 11
7. WATER SUPPLY AND DRAIN CONNECTIONS - See Fig. 11
WARNINGWARNING
WARNINGWARNING
WARNING
Topreventdamagetothepumpassembly,donotoperatetheicemakerwhen
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.
• Water supply inlet is 1/2" female pipe thread (FPT).
• A water supply line shut-off valve and drain valve should be installed. A minimum of 1/
2" OD copper tubing is recommended for the water supply lines.
• 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.
• Drain outlet for icemaker dump is 3/4" FPT. The drain for condensation is a 3/8" ID pipe.
Theicemakerdrainandthecondenserdrainpipingconnectionsmustbemadeseparately
from the bin drain.
• The drains must have 1/4" fall per foot 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 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.

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Fig. 11Fig. 11
Fig. 11Fig. 11
Fig. 11

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8. FINAL CHECK LIST8. FINAL CHECK LIST
8. FINAL CHECK LIST8. FINAL CHECK LIST
8. FINAL CHECK LIST
1) Is the icemaker level?
2)Istheicemakerinasitewheretheambienttemperatureiswithin+45°Fto+100°Fallyear
around?
3) Is there at least a 6" clearance around the icemaker for maintenance or service?
4)Haveallshippingtape(s),packingandcartonsbeenremovedfromtheicemaker?Arethe
cube guides in their 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?
Has the Voltage Tap Switch in the three phase model unit been positioned to match
incoming voltage? 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
supplypressurebeencheckedtoensureaminimumof10PSIGandamaximumof113
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) Have the compressor hold-down bolts and refrigerant lines been checked against
vibrationand possiblefailure?
10)Has the BinControl Switch beenchecked for correctoperation? When the icemakeris
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)Hasthe end userbeengiven the nameandtelephone number ofanauthorized service
agent?
13) Has the warranty tag been filled out and forwarded to the factory for warranty
registration?

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9. START UP9. START UP
9. START UP9. START UP
9. START UP
WARNINGWARNING
WARNINGWARNING
WARNING
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.
3. Do not operate the unit in the “WASH” position without water in the Water
Tank. This will cause damage to the Water Pump seal.
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 Water Tank to fill with water and the icemaker
to operate for a total of 10 minutes.
6)Turn off the power supply, and remove the FrontPanel andthe InsulationPanel by first
lifting the Top Panel and sliding the Top Panel to the back a little.
7) Remove the Rubber Cap covering the Overflow Pipe in the Water Tank. Remove the
Overflow Pipe by turning it counterclockwise. Drain the Water Tank. See Fig. 12.
8) Replace the Overflow Pipe, the Rubber Cap, the Insulation Panel and the Front Panel
in their correct positions.
9) Clean the Storage Bin.
10) Turn on the power supply, and start the automatic icemaking process.
Fig. 12Fig. 12
Fig. 12Fig. 12
Fig. 12

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10. PREPARING THE ICEMAKER FOR LONG STORAGE10. PREPARING THE ICEMAKER FOR LONG STORAGE
10. PREPARING THE ICEMAKER FOR LONG STORAGE10. PREPARING THE ICEMAKER FOR LONG STORAGE
10. PREPARING THE ICEMAKER FOR LONG STORAGE
WARNINGWARNING
WARNINGWARNING
WARNING
Whenshutting off theicemaker for an extended time,drain out allwater from
the water tank and remove the ice from the Storage Bin. The Storage Bin
should be cleaned and dried. Drain the icemaker to prevent damage to the
water supply line at sub-freezing temperatures, using air or carbon dioxide.
Shut off the icemaker until the proper ambient temperature is resumed.
• When the icemaker is not used for two or three days, it is sufficient to move the Control
Switch to the "OFF" position, unless the icemaker will be at sub-freezing temperatures.
[1] Remove the water from the potable water supply line:
1) Remove the Front Panel.
2) Move the Control Switch, on the Control Box, to the “OFF” position.
3) Wait 3 minutes.
4)ClosethePotableWaterSupplyLineShut-offValveandopenthePotableWaterSupply
Line Drain Valve. See Fig. 11.
5) Allow the line to drain by gravity.
6)AttachcompressedairorcarbondioxidesupplytothePotableWaterLineDrainValve.
7) Move the Control Switch to the “ICE” position.
8) Blow the potable water line out using compressed air or carbon dioxide.
[2] Drain the Potable Water Tank:
1) Turn off the power supply.
2) Move the Control Switch, on the Control Box, to the “OFF” position.
3) Remove the Insulation Panel.
4) Remove the Rubber Cap covering the Overflow Pipe in the Water Tank. Remove the
Overflow Pipe by turning it counterclockwise. Drain the Water Tank. See Fig. 12.

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5) Replace the Overflow Pipe, the Rubber Cap and the Insulation Panel in their correct
positions.
6) Remove all ice from the Storage Bin, and clean the Storage Bin.
7) Replace the Front Panel in its correct position.