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Refrigeration System Section 7
7-6
Part No. 80-1214-3
INSTALLATION/VISUAL INSPECTION CHECKLIST
WATER SYSTEM CHECKLIST
A water-related problem often causes the same symptoms as a refrigeration system component malfunction.
Example: A water float valve over filling during the freeze cycle, a system low on charge, and a starving TXV have
similar symptoms.
Water system problems must be identified and eliminated prior to replacing refrigeration components.
SAFEGUARDS
In addition to standard safety controls, your Manitowoc ice machine features built-in SafeGuards. The ice machine will
stop when conditions arise that would cause major component failure. Refer to Section 5 to determine if a SafeGuard
has stopped the ice machine.
Possible Problem List Corrective Action List
Filter and/or condenser is dirty. Clean the filter and condenser.
Water filtration is plugged (if used). Install a new water filter.
Water drains are not run separately and/or are not vented. Run and vent drains according to the installation manual.
Possible Problem List Corrective Action List
Water area (evaporator) is dirty. Clean as needed.
Water inlet pressure not between 20 and 80 psig. Install a water regulator valve or increase the water pressure.
Incoming water temperature is not between 45°F (1.7°C) and
90°F (32.2°C).
If too hot, check the hot water line check valves in other store
equipment.
Water filtration is plugged (if used). Install a new water filter.
Vent tube is not installed on water outlet drain. See installation instructions.
Hoses, fittings, etc., are leaking water. Repair/replace as needed.
Water float valve is stuck open or closed. Clean/replace as needed.
Dump valve is leaking. Clean dump valve.
Ice machine will shut off on Low Water SafeGuard.
Quick disconnect fitting is disconnected from the float valve. Attach fitting to float valve.
Float valve outlet contacts float. Adjust float valve outlet (see “Water Level Check”).
Revised 8/2003