Section 5
Before Calling for Service
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.
See page 3-4.
fill pattern on the evaporator is
incomplete.
Water trough level is to high or too low. Check the water level. See page 3-4.
Water inlet valve filter screen is dirty.
Remove and clean the filter screen.
See page 4-7.
Water filtration is poor.
Replace the filter.
Hot incoming water.
Connect the ice machine to a cold
water supply. See page 2-8.
Water inlet valve is not working.
Remove the water inlet valve and
clean it. See page 4-7.
Incorrect incoming water pressure.
Water pressure must be 20-80 psi
(137.9 - 551.5 kPA).
Water dump valve leaking
Clean the dump valve
See page 4-5
Ice machine is not level.
Level the ice machine.
See page 2-2.
Low ice capacity.
Water inlet valve filter screen is dirty.
Remove and clean the filter screen.
See page 4-7.
Incoming water supply is shut off.
Open the water service valve.
Water inlet valve stuck open or leaking. Remove the water inlet valve and
clean it. See page 4-7.
The condenser is dirty.
Clean the condenser.
Water dump valve leaking
Clean the dump valve
See page 4-5
Safety Limit Feature
In addition to the standard safety controls, 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
.
Safety Limit Stand-By Mode:
The first time a safety limit shut down occurs, the
ice machine turns off for 60 minutes (Stand-by
Mode). The ice machine will then automatically
restart to see if the problem re-occurs. During the
Stand-By Mode the harvest light will be flashing. If
the same safety limit is reached a second time (the
problem has re-occurred) the ice machine will
initiate a safety limit shut down and remain off until
it is manually restarted. During a safety limit shut
down the harvest light will be flashing.
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 reoccurring.
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.
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