8 Part Number 80-1505-3 6/11
Component Check Procedures
Electrical Components . . . . . . . . . . . . . . 175
Main Fuse . . . . . . . . . . . . . . . . . . . . . . 175
Bin Switch . . . . . . . . . . . . . . . . . . . . . . 176
Harvest Assist Air Pump . . . . . . . . . . . 179
ICE/OFF/CLEAN Toggle Switch . . . . . 180
Ice Thickness Probe (Harvest Initiation)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Water Level Control Circuitry . . . . . . . 187
Electronic Bin Thermostat Control . . . 193
Compressor Electrical Diagnostics . . . 199
Diagnosing Start Components . . . . . . 201
Refrigeration Components . . . . . . . . . . . 204
Refrigerant Charge Verification . . . . . 204
Suction Accumulator Operation . . . . . 206
Headmaster Control Valve . . . . . . . . . 207
Headmaster Valve Water-Cooled Condens-
ing Unit - CVD1476 . . . . . . . . . . . . . . . 212
Water Regulating Valve CVD1476 . . . 214
Fan Cycle Control . . . . . . . . . . . . . . . . 215
High Pressure Cutout (HPCO) Control 216
Low Pressure Cutout (LPCO) Control 217
Refrigerant Recovery/Evacuation . . . . . 218
Connections . . . . . . . . . . . . . . . . . . . . 219
Recovery/Evacuation Procedures . . . 221
Charging Procedures . . . . . . . . . . . . . 222
System Contamination Cleanup . . . . . . . 223
Determining Severity of Contamination 223
Cleanup Procedure . . . . . . . . . . . . . . 225
Refrigerant Reuse Policy . . . . . . . . . . . . 230
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