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Manitowoc STH042 7/15 - Page 11

Manitowoc STH042 7/15
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Part Number STH042 7/15 11
Component Check Procedures
Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Bin Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Touch Pad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Float Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Compressor Electrical Diagnostics . . . . . . . . . . . 104
Fan Cycle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
High Pressure Cutout (HPCO) Control. . . . . . . . 107
Filter-Driers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Refrigerant Recovery/Evacuation. . . . . . . . . . . . 109
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Refrigerant Re-use Policy . . . . . . . . . . . . . . . . . 110
Recovery and Recharging Procedures . . . . 112
System Contamination Cleanup . . . . . . . . . . . . . 115
Determining Severity of Contamination. . . 115
Mild System Contamination Cleanup
Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Severe System Contamination Cleanup
Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Replacing Pressure Controls without
Removing Refrigerant Charge. . . . . . . . . . . . . 119
Total System Refrigerant Charge. . . . . . . . . . . . . 121

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