–91–
SUCTION PRESSURE LOW CHECKLIST
Problem
• Cause
Improper Installation
• Refer to “Installation/Visual Inspection Checklist”
Discharge Pressure
• Discharge pressure is too low and is affecting low
side – 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.
To Next Page
Loading...
