–145–
Suction Pressure Low Checklist
Problem
Cause
Improper Installation
Refer to “Installation/Visual Inspection Checklist”
Discharge Pressure
Discharge pressure is too low and is affecting
suction pressure – refer to “Freeze Cycle Discharge
Pressure Low Checklist”
Improper Refrigerant Charge
Undercharged
Wrong type of refrigerant
Other
Non-Manitowoc components in system
Improper water supply over evaporator – refer to
“Water System Checklist”
Loss of heat transfer from tubing on back side of
evaporator
Restricted/plugged liquid line drier
Restricted/plugged tubing in suction side of
refrigeration system
TXV starving
NOTE:
Do not limit your diagnosis to only the items
listed in the checklists.
Summary of Contents for CVD0675
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