Manitowoc UG Series Technician's Handbook page 15

Component Check Procedures
Electrical Components . . . . . . . . . . . . . . . . . . . . . . . . . . 67
ON/OFF/Wash Toggle Switch . . . . . . . . . . . . . .67
Bin Thermistor (T3) . . . . . . . . . . . . . . . . . . . . . .68
Sump Water Thermistor (T1) & Liquid Line
Thermistor (T2) . . . . . . . . . . . . . . . . . . . . . . . . .70
Hot Gas Valve. . . . . . . . . . . . . . . . . . . . . . . . . . .77
Flammable Refrigerant Procedures
Servicing Requirements . . . . . . . . . . . . . . . . . . . . . . . . 81
Refrigerant Purging Requirements . . . . . . . . .82
Refrigerant Purging Procedure. . . . . . . . . . . . .83
Brazing Procedure . . . . . . . . . . . . . . . . . . . . . . .83
Pressure Testing. . . . . . . . . . . . . . . . . . . . . . . . .84
Evacuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
System Contamination Cleanup . . . . . . . . . . . . . . . . . 87
Determining Severity of Contamination . . . . .87
Mild System Contamination Cleanup Procedure
Severe System Contamination Cleanup
Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Part Number: 040006847 12/19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
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