Manitowoc Ice QM45 Series - Manual (Page 31)

Section 5 Before Calling for Service
5-1
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 To Correct
Ice machine does not operate.
No electrical power to the ice
machine.
Replace the fuse/reset the
breaker/turn on the main switch/plug
power cord into receptacle.
ON/OFF/ WASH toggle switch set
improperly.
Move the toggle switch to the ON
position.
Damper in open position (down). Damper must be capable of
swinging freely. See page 6-2.
Ice machine stops, and can be
restarted by moving the toggle
switch to OFF and back to ICE.
Safety limit feature stopping the ice
machine. Refer to “Safety Limit Feature” on the
next page.
Ice machine does not release
ice or is slow to harvest. Ice machine is dirty. Clean and sanitize the ice machine.
See pages 4-3 and 4-4.
Ice machine is not level. Level the ice machine.
See page 2-3.
Low air temperature around ice
machine (air-cooled models).
Air temperature must be at least 35°F
(1.6°C).
Water regulating valve leaks in harvest
mode (water-cooled models). Replace water-regulating valve.
Ice machine does not cycle
into harvest mode.
The six-minute freeze time lock-in has
not expired yet.
Wait for freeze lock-in to expire.
Ice thickness probe is dirty. Clean and sanitize the ice machine.
See pages 4-3 and 4-4.
Ice thickness probe wire is
disconnected. Connect the wire.
Ice thickness probe is out of
adjustment.
Adjust the ice thickness probe. See
page 3-5.
Uneven ice fill (thin at top of
evaporator).
See “Shallow or Incomplete Cubes”
on the next page.
Ice quality is poor (soft or not
clear).
Poor incoming water quality. Contact a qualified service company
to test the quality of the incoming
water and make appropriate filter
recommendations.
Water filtration is poor. Replace the filter.
Ice machine is dirty. Clean and sanitize the ice machine.
See pages 4-3 and 4-4.
Water siphon is not working. Check the water siphon system.
See page 3-4.
Water softener is working improperly (if
applicable).
Repair the water softener.
Continued on next page...