Manitowoc Marine Q 1000, Service Technician'S Handbook

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Refrigeration System
REFRIGERATION SYSTEM 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?