Manitowoc Ice Q 800 - Manual (Page 26)

Before Calling for Service Section 5
5-2
Problem Possible Cause To Correct
Ice machine produces shallow
or incomplete cubes, or the ice
Ice thickness probe is out of
adjustment.
Adjust the ice thickness probe.
fill pattern on the evaporator is
incomplete.
Water trough level is to high or too low. Set water level.
Water float valve filter screen is dirty. Remove the water float valve and
clean the filter screen.
Water filtration is poor. Replace the filter.
Hot incoming water. Connect the ice machine to a cold
water supply
Water float valve is not working. Remove the water float valve and
clean it.
Incorrect incoming water pressure. Water pressure must be 20-80 psi
(137.9 - 551.5 kPA).
Ice machine is not level. Level the ice machine.
Low ice capacity. Water float valve filter screen is dirty. Remove the water float valve and
clean the filter screen.
Incoming water supply is shut off. Open the water service valve.
Water float valve stuck open or
leaking. Remove the water float valve and
clean it.
Safety Limit Feature
In addition to the standard safety controls, such as
the high pressure cutout, your Manitowoc ice
machine features built-in safety limits which will
stop the ice machine if conditions arise which could
cause a major component failure.
Before calling for service, re-start the ice machine
using the following procedure:
1. Move the ICE/OFF/CLEAN switch to OFF and
then back to ICE.
A. If the safety limit feature has stopped the ice
machine, it will restart after a short delay.
Proceed to step 2.
B. If the ice machine does not restart, see “Ice
machine does not operate” on the previous
page.
2. Allow the ice machine to run to determine if the
condition is recurring.
A. If the ice machine stops again, the condition
has recurred. Call for service.
B. If the ice machine continues to run, the
condition has corrected itself. Allow the ice
machine to continue running.