Manitowoc Ice QM45 Series - Manual (Page 32)

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. See
page 3-5.
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 float valve filter screen is dirty. Remove and clean the filter screen.
See page 4-1.
Water filtration is poor. Replace the filter.
Hot incoming water. Connect the ice machine to a cold
water supply. See page 2-6.
Water float valve is not working. Remove the water float valve and
clean it. See page 4-7.
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.
See page 2-3.
Low ice capacity. Water float valve filter screen is dirty. Remove and clean the filter screen.
See page 4-1.
Incoming water supply is shut off. Open the water supply valve.
Water float valve stuck open or
leaking.
Remove the water float valve and
clean it. See page 4-7.
The condenser is dirty. Clean the condenser. See page 4-1.
High air temperature around ice
machine (air-cooled models).
Air temperature must not exceed
110°F (43.3°C).
Inadequate clearance in front of the
ice machine.
Provide adequate clearance.
See page 2-2.
Objects stacked around ice machine,
blocking airflow to condenser (air-
cooled models).
Remove items blocking airflow.
Safety Limit Feature
In addition to the standard safety controls, your
Manitowoc ice machine features built-in safety limits
that 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 ON/OFF/ WASH switch to OFF and
then back to ON.
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 reoccurred. Call for service.
B. If the ice machine continues to run, the
condition has corrected itself. Allow the ice
machine to continue running.