Before Calling for Service Section 55-2 Part Number 000001130 12/08Safety Limit FeatureIn addition to the standard safety controls, yourManitowoc ice machine features built-in safety limits thatwill stop the ice machine if conditions arise which couldcause a major component failure.Before calling for service, re-start the ice machine usingthe following procedure:1. Move the ON/OFF/ WASH switch to OFF and thenback to ON.A. If the safety limit feature has stopped the icemachine, it will restart after a short delay.Proceed to step 2.B. If the ice machine does not restart, see “Icemachine does not operate” on the previouspage.2. Allow the ice machine to run to determine if thecondition is reoccurring.A. If the ice machine stops again, the condition hasreoccurred. Call for service.B. If the ice machine continues to run, the conditionhas corrected itself. Allow the ice machine tocontinue running.Problem Possible Cause To CorrectIce machine produces shallow orincomplete cubes, or the iceIce thickness probe is out of adjustment. Adjust the ice thickness probe.fill pattern on the evaporator isincomplete.Water trough level is to high or too low. Check the water level.Water float valve filter screen is dirty. Remove and clean the filter screen.Water filtration is poor. Replace the filter.Hot incoming water. Connect the ice machine to a cold watersupply.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 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.The condenser is dirty. Clean the condenser.High air temperature around ice machine(air-cooled models).Air temperature must not exceed 110°F(43.3°C).Inadequate clearance around the icemachine.Provide adequate clearance.Objects stacked around ice machine,blocking airflow to condenser(air-cooled models).Remove items blocking airflow.