Manitowoc
Manitowoc Manitowoc
ON/OFF/WASH Toggle SwitchFUNCTIONThe switch is used to place the ice machine in ON,OFF or WASH mode of operation.SPECIFICATIONSSingle-pole, double-throw switch. The switch isconnected into a varying low D.C. voltage circuit.CHECK PROCEDURENOTE: Because of a wide variation in D.C. voltage, itis not recommended that a voltmeter be used to checktoggle switch operation.1. Inspect the toggle switch for correct wiring.2. Isolate the toggle switch by disconnecting allwires from the switch, or by disconnecting theMolex connector from the control board.3. Check across the toggle switch terminals using acalibrated ohmmeter. Note where the wirenumbers are connected to the switch terminals, orrefer to the wiring diagram to take properreadings.172 Part Number 80-01111-9 7/10
QM45/Q130/Q170/Q210/Q270Switch Setting Terminals Ohm ReadingONWASHOFFReplace the toggle switch if ohm readings do notmatch all three-switch settings.QM20/QM3024-21 Open24-20 Closed20-21 Open24-20 Open24-21 Closed20-21 Open24-20 Open24-21 Open20-21 OpenSwitch Setting Terminals Ohm Reading7-4 OpenON7-12 Closed12-4 Open7-12 OpenWASH7-4 Closed12-4 Open7-12 OpenOFF7-4 Open12-4 OpenReplace the toggle switch if ohm readings do notmatch all three-switch settings.Part Number 80-01111-9 7/10 173
- Page 122 and 123: Hot Gas Valve AnalysisThe valve can
- Page 124 and 125: FindingsThe inlet of the harvestval
- Page 126 and 127: DISCHARGE LINE TEMPERATURE ANALYSIS
- Page 128 and 129: REFRIGERATION COMPONENT DIAGNOSTICC
- Page 130 and 131: FINAL ANALYSISThe column with the h
- Page 132 and 133: Q130/Q170/Q210/Q270 Ice Machines On
- Page 134 and 135: QM20/QM30DIAGNOSING AN ICE MACHINET
- Page 136 and 137: QM30The QM30 ice machines have a ve
- Page 138 and 139: Ice Production CheckThe QM20/QM30 d
- Page 140 and 141: REFRIGERATION DIAGNOSTICSImportant:
- Page 142 and 143: 5. Install thermometer thermocouple
- Page 144 and 145: SM50DIAGNOSING AN ICE MACHINETHAT W
- Page 146 and 147: ICE QUALITY IS POOR — CUBES ARE S
- Page 148 and 149: ICE MACHINE RUNS AND NO ICE IS PROD
- Page 150 and 151: DISCHARGE PRESSURE HIGH CHECKLISTIm
- Page 152 and 153: ProcedureStep1. Determine the ice m
- Page 154 and 155: Other• Non-Manitowoc components i
- Page 156 and 157: FindingsThe inlet of the harvestval
- Page 158 and 159: ADJUSTING CUBE WEIGHTThe cube weigh
- Page 160 and 161: Bin SwitchQM45/Q130/Q170/Q210/Q270F
- Page 162 and 163: Bin Switch Removal — QM45/Q1301.
- Page 164 and 165: Bin ThermostatQM20/QM30FunctionThe
- Page 166 and 167: SM50FunctionThe bin thermostat stop
- Page 168 and 169: Check Procedure! WarningHigh (line)
- Page 170 and 171: Temperature/Resistance ChartAs the
- Page 174 and 175: Ice Thickness ProbeQM45/Q130/Q170/Q
- Page 176 and 177: Compressor Electrical DiagnosticsTh
- Page 178 and 179: Fan Cycle ControlQM45/Q130/Q170/Q21
- Page 180 and 181: Filter-DriersLIQUID LINE FILTER DRI
- Page 182 and 183: REFRIGERANT RE-USE POLICYManitowoc
- Page 184 and 185: RECOVERY AND RECHARGING PROCEDURESQ
- Page 186 and 187: NOTE: Manifold gauges must be remov
- Page 188 and 189: ImportantManifold gau ges must be r
- Page 190 and 191: System Contamination CleanupGENERAL
- Page 192 and 193: MILD SYSTEM CONTAMINATION CLEANUPPR
- Page 194 and 195: REPLACING PRESSURE CONTROLS WITHOUT
- Page 196 and 197: Q270 Condenser Fan Motor Replacemen
- Page 198 and 199: MAX. 1300°F(700°C)SV30714. Apply
- Page 200 and 201: High Pressure Cutout (HPCO) Control
- Page 202 and 203: This Page Intentionally Left Blank2
- Page 204 and 205: QM20 SELF-CONTAINED AIR-COOLEDNOTE:
- Page 206 and 207: QM45 SELF-CONTAINED AIR-COOLEDNOTE:
- Page 208 and 209: SM50 SELF-CONTAINED AIR-COOLEDNOTE:
- Page 210 and 211: Q130 SELF-CONTAINED AIR-COOLED(Afte
- Page 212 and 213: Q170 SELF-CONTAINED AIR-COOLEDNOTE:
- Page 214 and 215: Q210 SELF-CONTAINED WATER-COOLEDNOT
- Page 216 and 217: Q270 SELF-CONTAINED WATER-COOLEDNOT
- Page 218 and 219: QM20CAUTION: DISCONNECT POWER BEFOR
- Page 220 and 221: QM30230V/1 Ph/50 HzL1CAUTION: DISCO
QM45/Q130/Q170/Q210/Q270Switch Setting Terminals Ohm ReadingONWASHOFFReplace the toggle switch if ohm readings do notmatch all three-switch settings.QM20/QM3024-21 Open24-20 Closed20-21 Open24-20 Open24-21 Closed20-21 Open24-20 Open24-21 Open20-21 OpenSwitch Setting Terminals Ohm Reading7-4 OpenON7-12 Closed12-4 Open7-12 OpenWASH7-4 Closed12-4 Open7-12 OpenOFF7-4 Open12-4 OpenReplace the toggle switch if ohm readings do notmatch all three-switch settings.Part Number 80-01111-9 7/10 173
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