Refrigeration Diagnostics; Before Beginning Service; Installation/Visual Inspection Checklist - Manitowoc CNF0201 Technician's Handbook

Refrigeration Diagnostics

BEFORE BEGINNING SERVICE

Ice machines may experience operational problems
only during certain times of the day or night. A machine
may function properly while it is being serviced, but
malfunctions later. Information provided by the user can
help the technician start in the right direction, and may be
a determining factor in the final diagnosis.
Ask these questions before beginning service:
• When does the ice machine malfunction? (night, day,
all the time, only during the Freeze cycle, etc.)
• When do you notice low ice production? (one day a
week, every day, on weekends, etc.)
• Can you describe exactly what the ice machine seems
to be doing?
• Has anyone been working on the ice machine?
• During "store shutdown," is the circuit breaker, water
supply or air temperature altered?
• Is there any reason why incoming water pressure
might rise or drop substantially?

INSTALLATION/VISUAL INSPECTION CHECKLIST

Possible Problem List
Filter and/or condenser is dirty. Clean the filter and condenser.
Water filtration is plugged (if
used).
Water drain is not vented or is
improperly installed.
Part Number 000015432 Rev02 5/21
Corrective Action List
Install a new water filter.
Run and vent drains according
to the installation manual.
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