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Step 6 Remove parts for cleaning.A. Remove the Overflow Tube• To remove the tube, lift it up while using a slightback and forth motion to loosen it from the drainhole.When installing the tube, be sure it is completelyinserted into the drain hole to prevent water leakageduring normal operation.DRAINHOLEOVERFLOWTUBERemoving the Overflow TubeB. Remove the Vinyl Hose• Disconnect the water pump discharge hose fromthe distribution tube and water pump.62 Part Number 80-01111-9 7/10
C. Remove the Water Pump• Disconnect the water pump power cord.• Loosen the screws that hold the water pump inplace.• Lift the water pump and bracket assembly up andoff the screws.SCREWSWATERPUMPRemoving the Water PumpD. Remove the Water Trough• Remove the screws holding the water trough to thewalls of the cabinet.REMOVE SCREWSSV3019Part Number 80-01111-9 7/10 63
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ManitowocQM20/QM30/QM45SM50Q130/Q17
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Read These Before Proceeding:! Caut
Page 6 and 7:
Cleaning the Condenser . . . . . .
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Freeze Cycle Is Long, Low Ice Produ
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CHARTSCycle Times, 24 Hr. Ice Produ
Page 12 and 13: How to Read a Model NumberCube Size
Page 14 and 15: Model/Serial Number LocationThe mod
Page 16 and 17: SM50MODEL/SERIALNUMBER PLATE16 Part
Page 18 and 19: LaborQ130/Q170/Q210/Q2701. Labor re
Page 20 and 21: RESIDENTIAL WARRANTY COVERAGEWhat D
Page 22 and 23: How State Law AppliesThis limited w
Page 24 and 25: Ice Machine Clearance RequirementsS
Page 26 and 27: SM50/QM20/QM30After moving the ice
Page 28 and 29: Electrical SpecificationsQ130/Q170/
Page 30 and 31: QM20/QM30/QM45 Air-cooled Ice Machi
Page 32 and 33: COOLING TOWER APPLICATIONSWater Coo
Page 34 and 35: QM20/QM30LocationIce MakingWater In
Page 36 and 37: This Page Intentionally Left Blank3
Page 38 and 39: ON/OFF/WASHTOGGLESWITCHCONDENSER AI
Page 40 and 41: ON/OFF/WASHTOGGLESWITCHQM20 Ice Mac
Page 42 and 43: WATERPUMPEVAPORATORWATERSHUTTERASSE
Page 44 and 45: AIR-COOLED CONDENSERA dirty condens
Page 46 and 47: Step 1 Set the toggle switch to the
Page 48 and 49: D. Remove the Ice Thickness Probe
Page 50 and 51: Disassembly• Twist both of the in
Page 52 and 53: F. Remove the Float Valve• Turn t
Page 54 and 55: H. Remove the ice damper.Q130• Gr
Page 56 and 57: I. Remove the Bin Door• Grasp the
Page 58 and 59: Step 12 Use 1/2 of the sanitizer/wa
Page 60 and 61: QM20/QM30CLEANING AND SANITIZING PR
Page 64 and 65: Step 7 Mix a solution of cleaner an
Page 66 and 67: Step 20 Use half of the sanitizer/w
Page 68 and 69: 4. Wait until the Clean light flash
Page 70 and 71: WATER SHUTTERSThe water shutter is
Page 72 and 73: SUMP DRAIN OVERFLOW TUBE1. Remove c
Page 74 and 75: SPRAY BAR, WATER PUMP AND HOSE! War
Page 76 and 77: ! WarningWear ru bber gloves an d s
Page 78 and 79: WATER-COOLED ICE MACHINES1. Perform
Page 80 and 81: HARVEST SEQUENCE5. HarvestThe water
Page 82 and 83: ICE MAKINGSEQUENCE OFOPERATIONHarve
Page 84 and 85: HARVEST SEQUENCE4. Harvest CycleThe
Page 86 and 87: SM50INITIAL START-UP OR START-UP AF
Page 88 and 89: ENERGIZED PARTS CHARTSM50Self-conta
Page 90 and 91: Water Level CheckThe float valve is
Page 92 and 93: QM20/QM30Routine adjustments and ma
Page 94 and 95: 5. Remove the two screws holding th
Page 96 and 97: Clean (Green)Pressing the “Clean
Page 98 and 99: This Page Intentionally Left Blank9
Page 100 and 101: DIAGNOSING ICE THICKNESS CONTROLCIR
Page 102 and 103: Ice Machine Cycles Into Harvest Bef
Page 104 and 105: INSTALLATION AND VISUAL INSPECTIONC
Page 106 and 107: ICE FORMATION PATTERNEvaporator ice
Page 108 and 109: SAFETY LIMIT FEATUREIn addition to
Page 110 and 111: Safety Limit Notes• A safety limi
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Safety Limit ChecklistThe following
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Safety Limit #2Harvest time exceeds
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Discharge Pressure High ChecklistIm
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ProcedureStep1. Determine the ice m
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Suction Pressure Low ChecklistImpro
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Hot Gas Valve AnalysisThe valve can
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FindingsThe inlet of the harvestval
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DISCHARGE LINE TEMPERATURE ANALYSIS
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REFRIGERATION COMPONENT DIAGNOSTICC
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FINAL ANALYSISThe column with the h
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Q130/Q170/Q210/Q270 Ice Machines On
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QM20/QM30DIAGNOSING AN ICE MACHINET
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QM30The QM30 ice machines have a ve
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Ice Production CheckThe QM20/QM30 d
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REFRIGERATION DIAGNOSTICSImportant:
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5. Install thermometer thermocouple
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SM50DIAGNOSING AN ICE MACHINETHAT W
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ICE QUALITY IS POOR — CUBES ARE S
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ICE MACHINE RUNS AND NO ICE IS PROD
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DISCHARGE PRESSURE HIGH CHECKLISTIm
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ProcedureStep1. Determine the ice m
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Other• Non-Manitowoc components i
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FindingsThe inlet of the harvestval
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ADJUSTING CUBE WEIGHTThe cube weigh
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Bin SwitchQM45/Q130/Q170/Q210/Q270F
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Bin Switch Removal — QM45/Q1301.
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Bin ThermostatQM20/QM30FunctionThe
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SM50FunctionThe bin thermostat stop
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Check Procedure! WarningHigh (line)
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Temperature/Resistance ChartAs the
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ON/OFF/WASH Toggle SwitchFUNCTIONTh
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Ice Thickness ProbeQM45/Q130/Q170/Q
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Compressor Electrical DiagnosticsTh
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Fan Cycle ControlQM45/Q130/Q170/Q21
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Filter-DriersLIQUID LINE FILTER DRI
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REFRIGERANT RE-USE POLICYManitowoc
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RECOVERY AND RECHARGING PROCEDURESQ
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NOTE: Manifold gauges must be remov
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ImportantManifold gau ges must be r
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System Contamination CleanupGENERAL
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MILD SYSTEM CONTAMINATION CLEANUPPR
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REPLACING PRESSURE CONTROLS WITHOUT
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Q270 Condenser Fan Motor Replacemen
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MAX. 1300°F(700°C)SV30714. Apply
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High Pressure Cutout (HPCO) Control
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This Page Intentionally Left Blank2
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QM20 SELF-CONTAINED AIR-COOLEDNOTE:
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QM45 SELF-CONTAINED AIR-COOLEDNOTE:
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SM50 SELF-CONTAINED AIR-COOLEDNOTE:
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Q130 SELF-CONTAINED AIR-COOLED(Afte
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Q170 SELF-CONTAINED AIR-COOLEDNOTE:
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Q210 SELF-CONTAINED WATER-COOLEDNOT
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Q270 SELF-CONTAINED WATER-COOLEDNOT
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QM20CAUTION: DISCONNECT POWER BEFOR
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QM30230V/1 Ph/50 HzL1CAUTION: DISCO
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SM50L1CAUTION: DISCONNECT POWER BEF
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Q130/Q170/Q210Danfoss CompressorL1N
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Q270Danfoss CompressorL1NOTE: DIAGR
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QM45/Q130/Q170/Q210/Q270ICE THICKNE
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Tubing SchematicsQM20/QM30 Tubing S
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SM50 Tubing SchematicHEATEXCHANGERE
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