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Manitowoc QM20

Manitowoc QM20
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Part Number 80-01111-9 7/10 9
High Pressure Cutout (HPCO) Control . . 179
QM45/Q130/Q170/Q210/Q270 . . . . . . 179
Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . 180
Liquid Line Filter Drier . . . . . . . . . . . . . 180
Refrigerant Recovery/Evacuation . . . . . . 181
Definitions . . . . . . . . . . . . . . . . . . . . . . 181
Refrigerant Re-use Policy . . . . . . . . . . 182
Recovery and Recharging . . . . . . . . . . 184
System Contamination Cleanup . . . . . . . 190
General . . . . . . . . . . . . . . . . . . . . . . . . 190
Determining Severity of Contamination 190
Mild System Contamination Cleanup
Procedure . . . . . . . . . . . . . . . . . . . . . . 192
Severe System Contamination Cleanup
Procedure . . . . . . . . . . . . . . . . . . . . . . 193
Replacing Pressure Controls without
Removing Refrigerant Charge . . . . . . . 194
Q270 Condenser Fan Motor
Replacement . . . . . . . . . . . . . . . . . . . . . . . 196
Brazing Procedures for Danfoss Solenoid
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
COMPONENT SPECIFICATIONS
Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . 199
Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . . 199
QM45/Q130/Q170/Q210/Q270 . . . . . . 199
Bin Thermostat . . . . . . . . . . . . . . . . . . . . . 199
QM20/QM30/SM50 . . . . . . . . . . . . . . . 199
ON/OFF/WASH Toggle Switch . . . . . . . . . 199
Fan Control Cycle . . . . . . . . . . . . . . . . . . . 199
QM45/Q130/Q170/Q210/Q270 . . . . . . 199
High Pressure Cutout (HPCO) Control . . 200
Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . 200
Liquid Line Thermistor . . . . . . . . . . . . . . . 200
QM20/QM30/SM50 . . . . . . . . . . . . . . . 200
Total System Refrigerant Charge . . . . . . 201

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