Freeze Cycle Discharge Pressure High Checklist; Improper Installation; Water Condenser - Manitowoc S300 Technician's Handbook

FREEZE CYCLE DISCHARGE PRESSURE
HIGH CHECKLIST

Improper Installation

• Refer to "Installation/Visual Inspection Checklist"
(page 108)
Air Condenser
• Dirty condenser filter
• Dirty condenser fins
• High inlet air temperature (Self contained 110°F/
43°C max. Remote 120°F/49°C max.).
• Condenser discharge air recirculation
• Defective fan cycling control (page 167)
• Defective fan motor
• Defective head pressure control valve {Remotes}
(page 164)

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
Part Number 80-1479-3 7/10 113