Manitowoc Ice QM45 Series service manual Section Before Calling for Service, Checklist

Section 5	Before Calling for Service
	Section 5
	Before Calling for Service
Checklist

If a problem arises during operation of your ice machine, follow the checklist below before calling for service. Routine adjustments and maintenance procedures are not covered by the warranty.

Problem	Possible Cause
Ice machine does not operate.	No electrical power to the ice
	machine.
	ON/OFF/ WASH toggle switch set
	improperly.
	Damper in open position (down).
Ice machine stops, and can be	Safety limit feature stopping the ice
restarted by moving the toggle	machine.
switch to OFF and back to ICE.
Ice machine does not release	Ice machine is dirty.
ice or is slow to harvest.
	Ice machine is not level.
	Low air temperature around ice
	machine (air-cooled models).
	Water regulating valve leaks in harvest
	mode (water-cooled models).
Ice machine does not cycle	The six-minute freeze time lock-in has
into harvest mode.	not expired yet.
	Ice thickness probe is dirty.
	Ice thickness probe wire is
	disconnected.
	Ice thickness probe is out of
	adjustment.
	Uneven ice fill (thin at top of
	evaporator).
Ice quality is poor (soft or not	Poor incoming water quality.
clear).
	Water filtration is poor.
	Ice machine is dirty.
	Water siphon is not working.
	Water softener is working improperly (if
	applicable).

To Correct

Replace the fuse/reset the breaker/turn on the main switch/plug power cord into receptacle.

Move the toggle switch to the ON position.

Damper must be capable of swinging freely. See page 6-2.

Refer to “Safety Limit Feature” on the next page.

Clean and sanitize the ice machine. See pages 4-3 and 4-4.

Level the ice machine. See page 2-3.

Air temperature must be at least 35°F (1.6°C).

Replace water-regulating valve.

Wait for freeze lock-in to expire.

Clean and sanitize the ice machine. See pages 4-3 and 4-4.

Connect the wire.

Adjust the ice thickness probe. See page 3-5.

See “Shallow or Incomplete Cubes” on the next page.

Contact a qualified service company to test the quality of the incoming water and make appropriate filter recommendations.

Replace the filter.

Clean and sanitize the ice machine. See pages 4-3 and 4-4.

Check the water siphon system. See page 3-4.

Repair the water softener.

Continued on next page...

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