Manitowoc Ice CM MODEL STH003 User Manual
Page 48
48
DISCHARGE PRESSURE HIGH CHECKLIST
Problem
• Cause
Improper Installation
•
Refer to “Installation/Visual Inspection Checklist”
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
•
Non-Manitowoc components in system
•
High side refrigerant lines/component restricted
(before mid-condenser)
FREEZE CYCLE DISCHARGE PRESSURE LOW
CHECKLIST
Problem
• Cause
Improper Installation
•
Refer to “Installation/Visual Inspection Checklist”
Improper Refrigerant Charge
• Undercharged
•
Wrong type of refrigerant
Other
•
Non-Manitowoc components in system
•
High side refrigerant lines/component restricted
(after condenser)
•
Ambient temperature too low
NOTE: Do not limit your diagnosis to only the items
listed in the checklists.