Manitowoc Ice Machine IB0694YC

Verify fan motor windings are not open or grounded

Connect manifold gauges to ice machine

Hook voltmeter in parallel across the fan cycle control, leaving wires attached

Disconnect power to the ice machine

Follow all manufacturer’s instructions supplied with the pinch-off tool

Position the pinch-off tool around the tubing as far from the pressure control as feasible

Clamp down on the tubing until the pinch-off is complete

Cut the tubing of the defective component with a small tubing cutter

Solder the replacement component in place

Cycle ice machine with the on/off button

Ice Machine starts - Run the system to see if the control trips at the rated pressure

Does the HPCO open at a pressure significantly lower or higher than 450 psig?

If the control opens at the correct pressure, find the root cause

Ice Machine Does Not Start - Continue with the next step

Leave all wiring connectors attached and perform testing within the 60 minute time delay period

Check for 24 volts at terminals V & C on the ice machine control board

Enter voltage reading at terminals V & C

Disconnect thermistor from control board

Inspect the bridge connecting the cubes for thickness

Is the bridge thickness approximately 1/8" (3 mm)?

Adjust the ice thickness probe adjustment screw if necessary

Place a 9/32" (7 mm) drill bit between the ice thickness probe and the evaporator for initial adjustment

Make final adjustments to achieve a 1/8" (3 mm) thick bridge

Ensure the ice thickness probe wire doesn’t restrict movement of the probe