Manitowoc UG Series - Discharge Pressure High Checklist; Freeze Cycle Discharge Pressure Low Checklist

62 Part Number: 040006847 12/19
Discharge Pressure High Checklist
Improper Installation
• Refer to “Installation” section
Restricted Condenser Air Flow
• High inlet air temperature
• Condenser discharge air re-circulation
• Dirty condenser fins
• Defective fan motor
Improper Refrigerant Charge
• Overcharged
• Non-condensable in system
• Wrong type of refrigerant
Other
• High side refrigerant lines/component restricted
(before mid-condenser)
Freeze Cycle Discharge Pressure Low Checklist
Improper Installation
• Refer to “Installation” section
Improper Refrigerant Charge
• Undercharged
• Wrong type of refrigerant
Other
• High side refrigerant lines/component restricted
(before mid-condenser)
NOTE: Do not limit your diagnosis to only the items listed
in the checklists.