Manitowoc S300 Technician's Handbook page 7

Component Check Procedures
Electrical Components . . . . . . . . . . . . . . . 135
Main Fuse . . . . . . . . . . . . . . . . . . . . . . 135
ICE/OFF/CLEAN Toggle Switch . . . . . 136
Bin Switch . . . . . . . . . . . . . . . . . . . . . . 137
Cleaning the Ice Thickness or Water Level
Probe . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Water Level Control Circuitry . . . . . . . 141
Ice Thickness Probe (Harvest Initiation)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Harvest Assist Air Pump . . . . . . . . . . . 151
Compressor Electrical Diagnostics . . . . 152
Diagnosing Start Components . . . . . . 154
Refrigeration Components . . . . . . . . . . . 158
High Pressure Cutout (HPCO) Control 158
Fan Cycle Control . . . . . . . . . . . . . . . . 159
Water Regulating Valve . . . . . . . . . . . 160
Harvest Pressure Regulating (HPR) System
Remotes Only . . . . . . . . . . . . . . . . . . . 161
Head Pressure Control Valve . . . . . . . 164
Low Pressure Cutout (LPCO) Control . 167
Harvest Pressure Solenoid Valve . . . . 168
Refrigerant Recovery/Evacuation . . . . . . 169
Normal Self-Contained Model Procedures
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Normal Remote Model Procedures . . . 173
System Contamination Clean-Up . . . . . . 178
Determining Severity Of Contamination 178
Cleanup Procedure . . . . . . . . . . . . . . . 180
Replacing Pressure Controls Without Re-
moving Refrigerant Charge . . . . . . . . . 183
Specifications
Main Fuse . . . . . . . . . . . . . . . . . . . . . . 185
Fan Cycle Control . . . . . . . . . . . . . . . . 185
High Pressure Cutout (HPCO) Control 185
Filter-Driers . . . . . . . . . . . . . . . . . . . . . 186
Total System Refrigerant Charge . . . . 187
Part Number 80-1479-3 7/10 7