Manitowoc Ice QM30 manual Before Calling for Service, Section, Part Number 000001772 07/08

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

5-2 Part Number 000001772 07/08