Part Number STH038 5/12 87
SAFETY LIMIT #2
Harvest time exceeds 3.5 minutes for 500 consecutive
harvest cycles
Possible Cause Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
page 102
Water System
• Loss of water from sump area
• Water area (evaporator) dirty
• Dirty/defective water dump valve
• Low water pressure 1.37 bar min (20 psig)
• Vent tube not installed on water outlet drain
• Clogged water distribution tube
• Dirty/defective water fill valve
• Defective water pump
• Water freezing behind evaporator
• Plastic extrusions and gaskets not securely
mounted to the evaporator
Electrical System
• Ice thickness probe out of adjustment
• Ice thickness probe dirty
• Bin switch closed/defective
• Premature harvest
Refrigeration System
• Defective harvest valve
• TXV flooding (check bulb mounting)
• Defective fan cycling control
• Non-Manitowoc components
• Improper refrigerant charge
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