Manitowoc QM30 Installation And Use Manual page 22

Before Calling for Service
Problem
Ice machine produces shallow or
incomplete cubes, or the ice fill
pattern on the evaporator is
incomplete
Low ice capacity
5-2
Possible Cause
Water level is low
Water inlet valve filter screen is dirty
Water filtration is poor
Hot incoming water
Ice thickness adjustment dial is not set
properly
Incorrect incoming water pressure
Ice machine is not level
Water inlet valve filter screen is dirty
Incoming water supply is shut off
The air filter is dirty
The condenser is dirty
Inadequate airflow at the front of the ice
machine
Ice thickness adjustment dial is not set
properly
To Correct
Be sure the overflow tube is fully seated to
prevent water leakage
Remove the water inlet valve and clean
the filter screen
Replace the filter
Connect the ice machine to a cold water
supply
Adjust the ice thickness adjustment dial
Water pressure must be 240-620 kPA
(34.8 - 89.9 psi)
Level the ice machine
Remove the water inlet valve and clean
the filter screen
Open the water service valve
Clean the air filter
Clean the condenser
Remove items blocking airflow at the front
of the ice machine
Adjust the ice thickness adjustment dial
Part Number 000001772 07/08
Section 5