Cornelius IMD Series User manual

IMPORTANT:
TOTHEINSTALLER.
Itistheresponsibilityof
theInstallertoensurethat
thewatersupplytothe
dispensing equipmentis
providedwith protection
againstbackflowby anair
gapas definedin
ANSI/ASMEA112.1.2-1979;
oranapprovedvacuum
breakerorothersuch
method as provedeffective
bytest.
Waterpipe connections
and fixtures directly
connectedtoapotable
watersupply shall be
sized, installed,and
maintainedaccording to
Federal, State,and Local
Codes.
COUNTERTOPICEMAKER
IMDSERIES
Installation Manual
PRINTEDIN U.S.A
IMI CORNELIUS INC; 94-2000Ó
IMICORNELIUSINC gOne CorneliusPlacegAnoka,MN55303-6234
Telephone [phone] Facsimile(612)422-3246
PartNo.638085277
Revisied October16,2000
Revision B
THISDOCUMENTCONTAINSIMPORTANTINFORMATION
ThisManualmustbe read and understood beforeinstalling oroperating thisequipment

i638085277
TABLEOFCONTENTS
Page
SAFETYINFORMATION1....................................................
RECOGNIZE SAFETYINFORMATION1...............................
UNDERSTAND SIGNALWORDS1....................................
FOLLOWSAFETYINSTRUCTIONS1.................................
CO2(CARBON DIOXIDE)WARNING1................................
SHIPPING,STORING,OR RELOCATINGUNIT1.......................
SPECIFICATION CHART3...................................................
INSTALLATIONINSTRUCTIONS6............................................
GUIDETOSERVICE9.......................................................
ICEMAKER CLEANINGAND SANITIZINGPROCEDURES 9.................
MAINTENANCE9.......................................................
MONTHLY9............................................................
QUARTERLY9..........................................................
SEMI--ANNUALLY9.....................................................
WATERLEVELCONTROL11.................................................
HOW WATERLEVELCONTROLWORKS 11................................
PURPOSE OFWATERLEVELCONTROL 11................................
TOREPLACEWATERLEVELCONTROL 11................................
TOREPLACEWATERLEVELSAFETY SWITCH 11..........................
ICELEVELCONTROL 11.................................................
TEMPERATURE/PRESSURECHARTS*12............................
AIRTEMPERATURE12...............................................
10 LBS.DISCHARGE PRESSURE12..................................
WATERTEMPERATURE12...........................................
IMD300--5&IMD300--15 12............................................
IMD300--30 12.......................................................
IMD600--30, IMD600--90 12............................................
REFRIGERATIONSYSTEMADJUSTMENTS12.............................
EXPANSIONVALVE 12...................................................
ADJUSTMENTAND TROUBLESHOOTING12...............................
CONDENSERMODULATINGVALVE 13.....................................
CONDENSERMODULATINGVALVE REMOVAL 13..........................
GEARMOTOR14........................................................
SHAFT SEALINSTALLATIONAND REPLACEMENT(SEE FIGURE7.)14.....
AUGER& EXTRUDINGHEAD REMOVAL 15................................
INSTALLATIONAND SHAFT SEALREPLACEMENT(SEE FIGURE9.)15......
UPPER NUTAND BEARINGS15...........................................
TOREPLACE BEARINGS16..............................................
TROUBLESHOOTINGCOMPRESSOR16...................................
ELECTRICALCHECKOUT16..............................................
OVERLOAD CHECK-- FIGURE10.17......................................
COMPRESSOR CHECK-- FIGURE11.17...................................
CAPACITOR CHECK17...................................................

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638085277
TABLEOFCONTENTS(cont’d)
Page
TROUBLESHOOTING GEARMOTORS17..................................
THEGEARMOTORWILL NOTRUN 17.................................
THEGEARMOTORSTARTS BUTSTRIPS REPEATEDLYONTHE
OVERLOADPROTECTOR:17.........................................
THEMOTOR RUNS BUTOUTPUTSHAFT DOES NOTROTATE:17.......
OVERLOAD CHECK:17..............................................
MOTOR CHECK:18..................................................
SAFETYCONTROLS19......................................................
GUIDETO GOODICE20......................................................
TROUBLESHOOTINGCHART-- ICEMAKER NOTOPERATING21................
PARTSLIST28..............................................................
REFRIGERATIONAND FRAME ASSEMBLYIMD300-15 PARTSLIST29.......
REFRIGERATIONAND FRAME ASSEMBLYIMD300--30 AND IMD600--30
PARTSLIST31..........................................................
REFRIGERATIONAND FRAME ASSEMBLYIMD600--90 PARTLIST33........
ICELEVELCONTROLASSEMBLY PARTSLIST FORPARTNO
32770 IMD300--15 AND 32770--002 IMD302--15 37...........................
ICELEVELCONTROLASSEMBLY PARTSLISTIMD300--30 AND IMD600--30
PARTNUO31494--001 (115V)PARTNO.31494--002 (208V/220V)39...........
ICELEVELCONATROLASSEMBLY PARTSLISTIMD600--90
PARTNO.31892 41......................................................
BINAND FRONTEND ASSEMBLY PARTSLISTIMD300-15, IMD300-30
AND 600-30 43...........................................................
BINAND FRONTEND ASSEMBLYIMDPARTSLIST600-90 45...............
ELECTRICALBOX ASSEMBLY PARTSLIST,PARTNO.32776 IMD300--15
AND PARTNO.32776-002 IMD302-15 47...................................
ELECTRICALBOX ASSEMBLY PARTSLISTIMD300--30,
IMD600--30 AND IMD600-90 (ALL VOLTAGES)49..........................
DISPENSE MECHANISMASSEMBLY PARTSLISTIMD300-15, IMD300-30,
IMD600-30 AND IMD600-90 PARTSLIST56................................
GEARMOTORASSEMBLY PARTSLIST59.................................
WARRANTY60..............................................................
LISTOF FIGURES
FIGURE1.DIMENSION DRAWING(15 LB.)IMD300--15 4...................
FIGURE2.DIMENSION DRAWINGS(30 LBS.)IMD300--30 AND IMD600--30 5.
FIGURE3.DIMENSION DRAWINGS(90 LBS.)IMD600--90 5.................
FIGURE4.FLOATASSEMBLY7..........................................
FIGURE5.UPPERBEARINGAND AUGERASSEMBLY10...................
FIGURE6.ADJUSTMENTSCREW13......................................
FIGURE7. IMD300 SHAFT SEAL 14......................................
FIGURE8.AUGERAND EXTRUDINGHEAD REMOVAL 14..................
FIGURE9. IMD600 SHAFT SEAL 15.......................................
FIGURE10.OVERLOAD CHECK16.......................................
FIGURE11.COMPRESSOR CHECK16....................................

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TABLEOFCONTENTS(cont’d)
Page
FIGURE12.PIN NUMBERS18............................................
FIGURE13.GEARMOTOROVERLOAD19.................................
FIGURE14.SCHEMATICIMD300--15 22...................................
FIGURE15.SCHEMATICIMD300--30, IMD600--30, IMD601--30, IMD600--90,
AND IMD601--90 23.......................................................
FIGURE16.SCHEMATICIMD302--30, IMD602--30,AND IMD602--90 24........
FIGURE17. IMD300--15 CABINETPARTS ASSEMBLY AND PARTSLIST25...
FIGURE18. IMD300--30 AND IMD600--30 CABINETPARTS ASSEMBLY
AND PARTSLIST26......................................................
FIGURE19. IMD600--90 CABINETPARTS ASSEMBLY AND PARTSLIST27....
FIGURE20.REFRIGERATIONAND FRAME ASSEMBLYIMD300--15 28.......
FIGURE21.REFRIGERATIONAND FRAME ASSEMBLYIMD300--30
AND IMD600--30 30......................................................
FIGURE22.REFRIGERATIONAND FRAME ASSEMBLYIMD600--90 32.......
FIGURE23.WATER CONTROLASSEMBLY AND PARTSLISTPARTNO.
04643-04 IMD300-30 AND IMD600-30 34...................................
FIGURE24.WATER CONTROLASSEMBLY AND PARTSLIST
PARTNO.32843 IMD300--15 32545 IMD600-90 35..........................
FIGURE25.TOP VIEWICELEVELCONTROLASSEMBLY
PARTNO.32770 IMD300-15 AND 32770-002 IMD302--5 36..................
FIGURE26.SIDE VIEWICELEVELCONTROLASSEMBLY
PARTNO.32770 IMD300-15 AND 32770-002 IMD302--5 36..................
FIGURE27.TOP VIEWICELEVELCONTROLASSEMBLYIMD300-30 AND
IMD600-30PARTNO.31494-001 (115V)PARTNO.31494-002 (208V/220V)38. .
FIGURE28.SIDE VIEWICELEVELCONTROLASSEMBLYIMD300-30 AND
IMD600-30PARTNO.31494-001 (115V)PARTNO.31494-002 (208V/220V)38. .
FIGURE29.TOP VIEWICELEVELCONTROLASSEMBLYIMD600-90
PARTNO.31892 40......................................................
FIGURE30.SIDE VIEWICELEVELCONTROLASSEMBLYIMD600-90
PARTNO.31892 40......................................................
FIGURE31.BINAND FRONTEND ASSEMBLYIMD300-15, IMD300-30
AND 600-30 42...........................................................
FIGURE32.BINAND FRONTEND ASSEMBLYIMD600-90 44................
FIGURE33.ELECTRICALBOX ASSEMBLY PARTNO.32776 IMD300--15
AND PARTNO.32776-002 IMD302-15 46...................................
FIGURE34.ELECTRICALBOX ASSEMBLYIMD300--30
AND IMD600--30 IMD600-90 (ALL VOLTAGES)48..........................
FIGURE35.COMPRESSORELECTRICALBOX ASSEMBLY AND PARTSLIST
IMD300-30,600-30 AND 601-30 50.........................................
FIGURE36.COMPRESSORELECTRICALBOX ASSEMBLY AND PARTSLIST
IMD302-30 51...........................................................
FIGURE37.COMPRESSORELECTRICALBOX ASSEMBLY AND PARTSLIST
IMD602-30 52...........................................................
FIGURE38.COMPRESSORELECTRICALBOX ASSEMBLY AND PARTSLIST
IMD600-90 AND IMD601--90 53...........................................
FIGURE39.COMPRESSORELECTRICALBOX ASSEMBLYIMD602-90
EXPLODEDVIEWAND PARTSLIST54.....................................
FIGURE40.DISPENSE MECHANISMASSEMBLYIMD300-15, IMD300-30,
IMD600-30 AND IMD600-90
EXPLODEDVIEW55.....................................................

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638085277
TABLEOFCONTENTS(cont’d)
Page
FIGURE41.GEARMOTORASSEMBLY57.................................
FIGURE42.GEARMOTORASSEMBLYWIRINGDIAGRAM(ALL VOLTAGES)
EXPLODEDVIEW58.....................................................
LISTOF TABLES
SPECIFICATION CHART3...............................................
TEMPERATURE/PRESSURECHARTS12...................................

1638085277
SAFETYINFORMATION
RecognizeSafetyInformation
Thisisthe safety-alertsymbol.When you see this
symbolon ourmachine orinthismanual,be alert to
the potentiallyofpersonal injury.
Followrecommended precautionsand safe operating
practices.
DANGER
Understand SignalWords
Asignalword-DANGER,WARNING, ORCAUTION
isused withthe safety-alertsymbol.DANGERidenti-
fiesthe mostserioushazards.
Safety signswithsignalwordDANGERorWARNING
aretypicallynearspecifichazards.WARNING
Generalprecautionsarelisted on CAUTIONsafety
signs.CAUTIONalsocallsattention tosafetymes-
sagesinthismanual.CAUTION
FollowSafetyInstructions
Carefullyread all safetymessagesinthismanualand on yourmachine safety signs.Keep safety signsin
good condition.Replacemissing ordamaged safety signs.Learn howto operatethe machine and howto
usethe controlsproperly.Do notletanyone operatethe machine withoutinstructions.Keep yourmachine in
properworking condition.Unauthorized modificationstothe machine mayimpairfunction and/orsafetyand
affect the machine life.
CO2(Carbon Dioxide)Warning
CO2Displaces Oxygen.StrictAttention mustbeobservedintheprevention ofCO2(carbon dioxide)
gas leaks inthe entireCO2and soft drink system. IfaCO2gas leak is suspected,particularlyina
small area,immediatelyventilatethe contaminatedarea before attempting torepairtheleak.Person-
nelexposedto high concentration ofCO2gas will experience tremorswhicharefollowedrapidlyby
loss ofconsciousness and suffocation.
CAUTION:Before shipping,storing,or relocating thisUnit,the syrup systemsmustbe sanitizedand
all sanitizing solution mustbepurgedfromthe syrup systems.All watermustalso bepurgedfrom
theplainand carbonatedwatersystems.Afreezing ambient temperaturewill cause residualwater
remaining insidetheUnit tofreezeresulting in damagetointernalcomponentsof theUnit.
Shipping,Storing,OrRelocating Unit
CAUTION:Veryhigh dischargepressureispresentinsystem.Quick disconnectson your
gauges will minimizeDangerand loss ofrefrigerant.

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638085277
CAUTION:Unitrequires a separate electrical line.See Manualforproperfuse size.
WARNING:ThereMustBeAdequateClearance Around Ice Maker.AllowMinimum6”Air
Intake and 4”ForAirExhauston all sides and opentothefront.
NOTICEUnitmustbeinstalled perlocalplumbing and electricalcodes.See Installation Manualforunit
requirements.Failuretodosomay cause damageto unit,whichwouldvoidthewarranty.
NOTICEUsing AnyPartsOtherThanGenuineFactoryManufacturedPartsRelieves theManufacturer
ofall Liability.
NOTICEManufacturerReserves TheRightTo ChangeSpecificationsAtAnyTime.

3638085277
SPECIFICATION CHART
ModelsCondensing
UnitVAC HzPhComp RLAFan AmpsGrmtr AmpsRefrigerant Oz.TypeCircuit Fuse
IMD300--15A AirCooled 115 60 1 6 0.82 2 12 R134a 15
IMD302--15A AirCooled 220/240 50 1 3 0.5 1.6 12 R134a 15
IMD300--30A AirCooled 115 60 1 10.1 1 2 28 R404A20
IMD300--30W WaterCooled 115 60 1 10.1N/A2 13 R404A20
IMD301--30A AirCooled 208/230 60 1 5.7 1 1.6 28 R404A20
IMD301--30W WaterCooled 208/230 60 1 5.7N/A1.6 13 R404A20
IMD302--30A AirCooled 220/240 50 1 5.3 0.5 1.6 28 R404A20
IMD302--30W WaterCooled 220/240 50 1 5.3N/A1.6 13 R404A20
IMD600--30A AirCooled 115 60 1 12 1 2 28 R404A20
IMD600--30W WaterCooled 115 60 1 12 N/A2 14 R404A20
IMD601--30A AirCooled 208/230 60 1 7.7 1 1.6 28 R404A20
IMD601--30W WaterCooled 208/230 60 1 7.7N/A1.6 14 R404A20
IMD602--30W WaterCooled 220/240 50 1 8.2N/A1.6 14 R404A20
IMD600--90A AirCooled 115 60 1 12 1 2 24 R404A20
IMD600--90W WaterCooled 115 60 1 12 N/A2 14 R404A20
IMD601--90A AirCooled 208/230 60 1 7.7 1 1.6 24 R404A20
IMD601--90W WaterCooled 208/230 60 1 7.7N/A1.6 14 R404A20
IMD602--90A AirCooled 220/240 50 1 8.2 0.5 1.6 24 R404A20
IMD602--90W WaterCooled 220/240 50 1 8.2N/A1.6 14 R404A20
NOTE:FOR UNITSNOT LISTEDIN ABOVE CHART,REFERTONAMEPLATEOR CONTACT FACTORY
SERVICE.

4
638085277
FIGURE1.DIMENSION DRAWING(15 LB.)IMD300--15
SHIPPINGWT.189 LBS.(APPROX.)

5638085277
FIGURE2.DIMENSION DRAWINGS(30 LBS.)IMD300--30 AND IMD600--30
SHIPPINGWT.(IMD300--30)220 LBS.(APPROX.)
SHIPPINGWT.(IMD600--30)240 LBS.(APPROX.)
FIGURE3.DIMENSION DRAWINGS(90 LBS.)IMD600--90
SHIPPINGWT.225 LBS.(APPROX.)

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638085277
INSTALLATIONINSTRUCTIONS
A.. REMOVE ICEMAKERFROMCARTON:
1.Keep unitinthe uprightposition,removecarton and pallet fromunitand inspectunit fordamage.Upon
inspection ofunit, ifanydamage isfound, fileaclaimwithcarrierimmediately.
2.LocateStartup Card eitheron outside ofcontaineroron plasticliner.Fill in properinformation and
send one copytofactory,and othercopytoDistributor.Postage isprepaid.
B.. CABINETREMOVAL
1.Locate and removethe (2)screwsfromunderthe frontcover.Lift coverforward and up toremove.
2.Lift up frontedge of top cover.Slide back about1/2inch and remove.
3.Remove(6)screwsfromthe frontof the machine.
4.Removeside panelsby sliding the frontedge outand then back slightlyto disengage.
5.Removethe frontsplash panelbylifting slightlyto disengage the front, then tilt forward and remove.
6.Remove bintop and removeshipping insert.
C.. PREPARATIONOFINSTALLATIONSITE
1.The refrigeration systemon aircooled unitsrequiresairflow,soawell ventilated area shouldbecho-
sen.Aminimumof(6)inchesmustbe maintained, free ofanyobstruction, forairintake.Aminimumof
(4)inches clearanceisrequired forairexhaust.
2.Withtemplate provided makethe necessaryprovisionsinthe counterforwater,drain and the electrical
hook--up.Provisionsare availablefor rearand bottomconnectionsofwaterand electrical.Use hole
plugsprovided to plug unused holes.
D.. WATERINLETHOOK--UP:
1.WaterInlet-- Fitting isa 1/4”SAE maleflarelocated at the rearof the unit. Connectwatersupplywith
a 1/4”orlargercopperorflexibletubing.
2.WaterPressure-- Unless otherwisespecified, the unitisdesigned to operateonwaterpressuresbe-
tween 10 P.S.I. and 90 P.S.I. (NOTE: forpressuresabove90P.S.I. aregulatormustbe installed).
3.WaterCooledCondensers
a.. Inlet tomodulating valve uses3/8”FPT.Useseparate 3/8”orlargerwaterline.
b.. Outletis3/8”FPT.
4.FilterConditionersarerecommended on supplylinestoicemakers.Never run the watersupplytowa-
tercooled Condenserthrough Filter/Conditioner,itusesup the cartridge unnecessarilyand a saturated
cartridge can starvethe icemakercausing prematurecomponentdamage.Separatewatersupplies
arerecommended.
NOTE:Unitmustbe installed perlocalplumbing code.
E.. ELECTRICALSUPPLY
1.PowerAccess -- Isprovided bywayofa 7/8”dia.holein boththe base and the rearpanel.Routein-
coming powerinconduit, toicemakerelectricalcontrolbox.Makeconnectionstowiresprovided in
controlboxand ground lug/screw.Plug unused hole.
2.Fused Line-- Should be a dedicated circuitchecked and sized according to electricalrating shown on
unitnameplate.

7638085277
NOTE:Unitmustbe installed perlocalelectricalcode.
F.. DRAIN CONNECTION
1. Install splash panelon machine and holdin placewith(2)screws.Do not tighten at thistime.
2.Remove draintraymounting bracket fromtheirshipping carton.
3.Clipthe draintraymounting bracketontothe bottomof the splash panel inthe bracketsprovided.
4.Hookthe draintrayintothe splash paneland ontothe mounting bracket.
5.Pushthe drain elbowsecurelyontothe draintray.Do notglue in place.
6.Completethe drain hookup according tothe instructionsprovided with unit
FIGURE4.FLOATASSEMBLY
NOTE:Steps7and8tobecompleted onlyafterall startup checks and adjustmentsare performed.
7.Replaceside panelstightening all (6)screws(including splash panelscrewsleft loose).
8.Replacetop paneland frontcoverand securewith(2)screws.
NOTE:Inthosecaseswherethe unitisbasemounted and noton legsitshouldbesealed all around the base
withNSFlisted sealant. (IMIWilshireP/N04815--B).
G.. AUGERENGAGEMENT
Becertainthataugerisfullyengaged tolowerdrive and thatextruding head isfullyengaged to evaporator.
H.. INITIALSTARTUP,CHECKS& ADJUSTMENTINSTRUCTIONS
NOTE:Do notstartunitbeforecompleting Installation stepsA--G.
Turnonwatersupplyand main powerswitch(located on top ofelectricalbox).All IMD30 lb.and 90 lb.series
unitsare equipped witha45second delaytimer.Thismeansthat the refrigeration systemwill notstartuntil 45
secondsofdispense are accumulated inthe timer.Start therefrigeration systembydepressing theice dis-
pense button for45 seconds.Makethe following systemchecks:
NOTE:If unitwill notstartbe surewater reservoirisfull.Low watersafety controlmustbe properlyadjusted to
startand shutdown unit. If waterleveldropsbelowbottomofreservoir,unitmustshutdown.Adjustmentis
made bymoving magnetup ordown.
WaterLevel-- If necessaryadjustFloatbybending floatarmup ordown asneeded,pushfloatassemblydown
until unitstopsrunning.Releasefloatand unitwill restart. Keep waterinreservoiratlevel line while unitisin op-
eration.See Figure 1.

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638085277
LowWaterSafetyControl-- Adjustmagnetbybending magnetarmas showninfigure1toshutdown unitif
the waterleveldropsbelowthe line on the side of the reservoir.
BinControl-- Removefourscrewsfromtop ofbincoverand lift coverso bincontrolplatecan be manuallylifted
until unitshutsdown.Release plate and unitwill restart(OnIMD300--30, IMD600--30 and IMD600--90 the dis-
pense button mustbe depressed for45 secondsbefore unitwill start).Replacescrews.
Dispense Switchand Mechanism-- Bydepressing the dispenseswitch, the dispensemechanismdooron the
storage binwill open,and chain,sprockets,and agitatorwill rotatecounterclockwise.
NOTE:If anyof thesechecks oradjustments cannotbe achieved,refertoTroubleshooting Section of this
manualorcall ourtechnicalsupportcenterforassistance at1--800--238--3600.

9638085277
GUIDETOSERVICE
ICEMAKER CLEANINGAND SANITIZINGPROCEDURES
Do notuse anyof the icemade during cleaning operations.
Clean and sanitizeicestorage area when cleaning icemaker.
1.Turnmachine off.
2.Shutoff watersupply.
3.Removeicefromstorage bin.
4.Mixapproved cleaner (2 gallonsasdirected).Recommendedcleaner:Calgon Corp.ofVirginiaChemi-
cals,icemachine cleaner.Mixture:3-1/3 ouncespergallon ofwater.Do notuse nickelsafecleaners.
5.Turnmachine on and add cleanersolution towaterlevelcontrol(floatreservoir) until 2 gallonshave been
used.
6.Turnonwatersupplyand run machine for15 minutes.
7.Turn off machine and remove and discard all ice.
8.Sanitize using householdliquid bleach(50 ppmchlorine).Mixture:1fluid ounce pergallon roomtempera-
turewater.2minute exposuretime.
9.Sanitize pre--cleaned inside areasofstorage binliner,doorframe,door,aswell asexposed surfacesof the
evaporatorassemblyand binshutoff assemblywithsanitizing solution and allowto airdry.
MAINTENANCE
Preventivemaintenancecan increasethe troublefree life ofyouricemaker.Manyauthorized service agencies
offerservicecontractsforyouricemaker.Contactyourlocaldistributorforfurtherinformation.
MONTHLY
1.Clean the condenser.Useabrush,vacuumcleanerorblowfrominside with airorCO2gas.Ifunitispro-
vided with and airfilter,clean or replace.
2. Inspectwaterfeed reservoiratlease onceamonth until a definite patternforcleaning and sanitizing has
been established.
QUARTERLY
Thisisthe maximumperiod of time between cleaning and sanitizing the icemaker. In addition torecommended
monthlyprocedure,and ifamorefrequentcleaning and sanitizing pattern hasnotbeen established,unitmust
be cleaned and sanitized.
SEMI--ANNUALLY
Semi-Annuallyin addition to all previouslyestablished service proceduresperformthe following:
1.Check forwaterleaks intube connections,waterfittingsand lowericemakerwaterseal.
2.Check draintubesforclogsand “aged”tubes.Replaceif tubesarestained orbrittle.
3.Check forsignsofcondensation.Clean where necessaryand replaceinsulation properly.

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638085277
4.Check safety circuitsforproperoperation.
5.Check refrigeration system(see page12 12).
6.Check unit forabnormalnoise.Tighten machine and cabinetscrews,ifnecessary.
7.Check white upperbearingson augerassembly.Ifbearingsareless than 1/16? thick,replace.See Figure 5
REPLACE
OK
REPLACE
1/16?OK
1/16?
FIGURE5.UPPER BEARINGAND AUGER ASSEMBLY
NOTE:preventive maintenance canincrease thetrouble--free lifeofyourice maker.Failureto perform
preventive maintenance couldvoidyourequipmentwarranty

11 638085277
WATERLEVELCONTROL
HOW WATERLEVELCONTROLWORKS
When waterisintroduced through the inlet fitting the floatrises. the floatpushesagainstaleverwhichinturn
forcesthe poppetassemblyagainst the inlet fitting valveseatwhichsealsthe wateroff, (See Figure 4).Before
the waterinletis sealed the safety switchisoperated. Inthe eventofawaterfailurethe floatwould drop down
and operatethe safety switchtoshutoff the machine.
If waterlevelcontrolwill notshutoff and sealatlevelasindicated,be sureinletpressure doesnotexceed rec-
ommended factoryoperating range.
Underordinary circumstancesadjustmentshould notbe necessaryproviding itwasproperlyadjusted when unit
wasinstalled or relocated. If, however, the controlbecomesinoperative,repairor replace.See Start-UpAdjust-
ment, page 7 .
PURPOSE OFWATERLEVELCONTROL
1.To automaticallymaintain properwaterlevel inthe evaporatorwhen unitisrunning and making ice.
2.Asafety switchisoperated inthe eventofan interruption inwatersupply.The switchshutsoff the electrical
powertothe icemakerand itsrefrigeration system.Switchwill resetas soon as cause ofwaterfailure has
been corrected and properwaterlevel inicemakerhasagain been reached.
3.The transparentbowlnotonlyprovidesavisiblecheck ofwaterlevel,butalsoisa good guide tothe inter-
nalconditionswhich existwithinthe icemakerassemblyitself. (See Cleaning Procedure.)
TOREPLACEWATERLEVELCONTROL
1.Shutoff the watersupply.Shutoff the main powerswitch orunplug the ice dispenserfromelectricaloutlet.
2.Removethe flexibletubing frombottomofwaterlevelcontroland drainwaterfromwaterlevelcontroland
evaporator.
3.Removeflexibletubing atbottomofwaterlevelbowlconnected tothe overflow.
4.Holdwaterinlet fitting with propertoolto preventit fromrotating when disconnecting the waterinlet.
5.Removewing nutholding watercontroltoitsmounting bracket. Controlcan be removed bylifting straight
up.
TOREPLACEWATERLEVELSAFETY SWITCH
1.Shutoff main powerswitch orunplug the ice dispenserfromelectricaloutlet.
2.Unplug molex connectorconnecting switchto electricalbox.
3.Removethe2screwsanchoring the waterlevelsafety switchtothe bottomof the waterlevelcontrol
mounting bracket.
ICELEVELCONTROL
The icelevelcontrolassemblyis secured tothe top of the icestorage containercover.The coveris secured to
the storage containerwithfourscrews.The levelcontrolswitchisoperated bya plate assemblylocated beneath
the diaphragm.When the plate assemblyisdown due tolack oficeinstorage container,electrical impulseis
sent tocompressor,starting the icemaking cycle.Asicelevel increasesinstorage container, the plate assembly
ispushed up.When storage containerisfull,itde--actuatesthe switch,stopping the compressorand icemaking
cycle.

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638085277
The operating positionsof the switch arefixed,no adjustmentsare necessary.Ifswitchreplacementbecomes
necessary,simplydisconnectcable atconnector,removewiresfromswitch.
TEMPERATURE/PRESSURECHARTS*
Air Temperature
±10 lbs.DischargePressure
WaterTemperature
50_
60_
70_
80_
90_
100_
40_65_90_40_65_90_
162
188
214
245
275
309
166
192
218
249
279
313
168
194
220
251
281
315
174
202
230
265
300
328
177
205
233
269
304
334
180
208
236
272
307
340
40_65_
80
92
114
124
161
187
85
97
120
120
167
193
90
102
124
147
171
195
90_
IMD300--5&IMD300--15 IMD300--30 IMD600--30, IMD600--90
NOTE:Thethermostatic expansion valve isnon--adjustableon all models.
REFRIGERATIONSYSTEMADJUSTMENTS
Acomplete understanding of the icemakerand hermeticrefrigeration systemisnecessarybefore anyadjust-
mentsaremade.The refrigeration technician mustuse high and lowside pressurereadings,waterand airtem-
peratures,plusgeneralconditionsofcleanliness to assess the refrigeration systemstatuswhen making any
adjustments.
All icemakerproductsaretested and adjusted at the factorypriortoshipmentwherethe ambient temperature
rangesfrom65_Fto 90_F,depending on the season of the year.
Whenevera newicemakerisinitiallyinstalled and started--up,itisimperativethat the start--up operatormake
the following checks and readjustmentsforlocalconditions.
EXPANSIONVALVE
You will findathermalexpansion valveonicemakers,whichisused tocontrolthe amountofrefrigerant flowing
through the evaporator. Improperlyinstalled ordefective expansion valvesmay causelowproduction,soft ice,
squeaking fromevaporatorand excessiveload inside evaporator.
Byusing generalrefrigeration troubleshooting along withthe pressurecharts,you can easilydetermine whether
ornot the expansion valveisworking properly.
ADJUSTMENTAND TROUBLESHOOTING
When troubleshooting the expansion valve,you must;
1.Besureyou have adequatewaterflowing intothe evaporator,aclean and properly ventilated condenser,
and the systemisproperly charged and free ofanyrestrictions.Alsobesurecompressorisoperating prop-
erly.
2.Takereservoirwatertemperature and airtemperaturefromcondenserinletand determine atwhatpressure
unitshouldberunning.Onmachinesequipped withthermostatic valvethereisNOadjustment. If correct
pressurecannotbe obtained,be suresystemhastimetostabilize,10--15 minutes.
3.Besuresensing bulbislocated atoutletside ofevaporatorabout3--4inchesawayfromevaporatorand be
suretoinsulatewell and clamptightlytotubing.Ifsystempressuresarestill notadequate, takeasecond
waterand airtemperaturereading and go overotherpartsof the systemforpossible problems.Ifproper
charge isquestionable evacuate and recharge to nameplate and leak check.Ifvalvestill malfunctionsre-
placevalve.

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Use generalrefrigeration systempracticeswhen replacing and recharging unit. Afternewvalveisin place,go
through previousmonitored adjustmentsand troubleshooting tobesurevalveisfunctioning properly.
NOTE:Onwatercooled units adjustcondensermodulating valve beforetroubleshooting expansion
valve.
CAUTION:Veryhigh dischargepressureispresentinsystem.Quick disconnectson your
gages will minimizeDangerand loss ofrefrigerant.Complywithfederalregulationsfor
reclaiming refrigerant.
CONDENSERMODULATINGVALVE
The reason forusingawatermodulating valveistosupplythe correctamountofwatertothe condenserto
maintainthe properoperating pressureinthe refrigeration systemhigh side.The flowofwaterthrough the valve
isincreased asthe high side pressurerisesand decreasesashigh side pressurelowers.
Tocalibratethe amountofwaterflow withthe refrigeration systemhigh side pressure, turn adjustmentscrew
located on end ofvalve opposite ofbellowsSee Figure 4.Turnscrewcounterclockwisetoraise opening point.
Opening pointofvalveshouldbeset tomaintain properoperating pressureinrefrigeration systemhigh side.
RefertoPressureCharton Page 11.Closing pointofvalveshouldbesetlowenough toclosevalve during com-
pressorstand byperiods.
NOTE:Coldwaterwill absorbmoreheat fasterthanwarmwater.Thewaterflow will therefore
automaticallyincrease as inlet temperatureincreases.
FIGURE6.ADJUSTMENTSCREW
CONDENSERMODULATINGVALVE REMOVAL
1.Disconnectpowerto unit, then shutoff watersupplytocondenserand reclaimrefrigerant fromsystem.
2.Removeinletwaterline fromCondensermodulating Valve.Alsoremovetube fromrefrigeranthigh side line.
3.RemoveCondenserModulating Valve and bracket.
4.Removevalvefrombracket.
5.ReplaceCondenserModulating Valve byreversing Steps2thru 4.Then pull systemintovacuum.

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6.Recharge unitwithrefrigerantpernameplate.
7.Turn powerand waterOnto unit.
8.With unitrunning adjustmodulating valveto propersetting.
9.Gothrough a completesystemcheck.
GEAR MOTOR
The gearmotorisequipped withastartrelayand a manualresetoverload.When currentisapplied, the relay
energizesand completesthe circuit tothe startwinding.The motor reachesa predetermined speed and the
relaydropsout, disconnecting the startwinding.The run winding remainsinthe circuitaslong as currentisap-
plied.
The purpose of the overload isto automatically shutoff the motorinthe eventofamechanicalbind of the trans-
mission,an overload condition withinthe evaporatororan electricalmalfunction.Itdoesthisby sensing amper-
age draw. If the motorstallsthe startrelaywould energize and stayenergized.The amperage wouldsurge to 5
to6timesgreaterthan normaldraw. Inthisevent the overload wouldshutoff the transmission in 4 to 8 seconds.
If the motoris subjected to an abnormal load,butdoesnotreachstall condition, the overload will react, butover
a greaterperiod of time.The reaction time dependsupon the amperage towhichitis subjected.
The overload, through the safety circuit, alsoshutsoff the compressor.
RefertoTroubleshooting Guide.
FIGURE7. IMD300 SHAFT SEALFIGURE8.AUGER AND EXTRUDINGHEAD REMOVAL
E--RING
WASHER,PLAINFLAT
SHAFT SEAL
LOCATORSEAL
GEARMOTOR
AUGER NUT
BEARINGNYLON
GROOVE
EXTRUDING
HEAD
BEARINGDELRIN
COLLAR WITH
ANTI--ROTATION RIB
AUGER
“D”DRIVE
SHAFT SEALINSTALLATION AND REPLACEMENT(SEE FIGURE7.)
1.Placeshaft seal locatorseatovergearmotoroutputshaft, embossed side down,and push down until shaft
sealseatrestsflushontop ofgearmotor.
2.Placerubbercoated ceramic seal(important: ceramicface up)overoutputshaft and push down until seal
restson top of the shaft sealseat. (Lubricaterubberon ceramic sealwith[#06195]rubberlubricant.)
3.Placeshaft sealwithcarbon face down(spring up)overoutputshaft and push(gently)downward until seal
restson carbon face of the outputshaft seal.
4.Push downonthe washercompressing the spring on the outputshaft seal.While holding the seals(down)
in placeslide the E--ring intothe grooveonthe outputshaft.

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AUGER&EXTRUDINGHEAD REMOVAL
1.Disconnectunit frompowersupply.
2.Removestorage containercoverand putaside.
3.Turn off watersupplytoicemaker.
4.Afterice hasmelted fromhead take hold of the augernutand lift straightup to disengage fromicemaker.
5.When replacing the augerassembly,makecertainthatboththe augerengagesthe outputshaft drive and
the extruding head ribsengage the evaporatortube collar.See Figures8.
E--RING
WASHER,PLAINFLAT
SHAFT SEAL
LOCATORSEAT
GEARMOTOR
MOUNT,SHAFT SEAL
FIGURE9. IMD600 SHAFT SEAL
INSTALLATION AND SHAFT SEALREPLACEMENT(SEE FIGURE9.)
1.Placeshaft seal locatorseatovergearmotoroutputshaft, embossed side down,and push down until shaft
sealseatrestsflushontop ofgearmotor.
2.Placerubbercoated ceramic seal(important: ceramicface up)overoutputshaft and push down until seal
restson top of the shaft sealseat. (Lubricaterubberon ceramic sealwith[#06195]rubberlubricant.)
3.Placeshaft sealwithcarbon face down(spring up)overoutputshaft and push(gently)downward until seal
restson carbon face of the outputshaft seal.
4.Placeflatwasheroveroutputshaft and letreston the outputshaft seal.Push downonthe washercom-
pressing the spring on the outputshaft seal.While holding the seals(down)in placeslide the E--ring into
the grooveonthe outputshaft.
UPPER NUTAND BEARINGS
The upperbearingslocated on top of the augerisused to absorbthe force between the augerand extruding
head.
Thebearings are 3/32”thick.Whenthey wearbelow1/16”they should bereplaced.Bearingsto be
inspectedforwearduring quarterlymaintenance.See Figure 5.