Part Number Preliminary 6/11 167
FREEZE CYCLE DISCHARGE PRESSURE
HIGH CHECKLIST
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
(page 162)
Air Condenser
• Dirty condenser filter
• Dirty condenser fins
• High inlet air temperature
• Condenser discharge air recirculation
• Defective fan cycling control (page 273)
• Defective fan motor
• Defective head pressure control valve {Remote}
Water Condenser
• Low water pressure [20 psig (138 kPa) min.]
• High inlet water temperature (90°F/32°C max.)
• Dirty condenser
• Dirty/Defective water regulating valve
• Water regulating valve out of adjustment
Other
• Overcharged
• Non-condensable (air) in system
• Wrong type of refrigerant
• Non-Manitowoc components in system
• High side refrigerant lines/component restricted
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