Scotsman Modular Cuber C1030SR-3

Ensure the cleaning indicator light is on

Prepare nickel safe ice machine scale remover

Push the Clean button to drain and refill the reservoir

Add nickel safe ice machine scale remover

Did the Sump Empty light switch on?

If Sump Empty light did not switch on, push off, un-snap the Water Level Sensor, lift slightly, then push Clean again

Attach refrigeration gauge set to high side port

Unplug both wires from fan pressure control and wrap wire terminals in electrical tape

Connect ohmmeter to terminals of fan pressure control

Switch ice machine on and observe pressure that the pressure control closes at. Is it within specification?

Switch unit off, allow system to equalize, and observe pressure the pressure control opens at. Is it within specification?

Attach refrigeration gauge set to high side port

Select the method used to disable the fan motor

Measure idle voltage at the contactor (compressor off)

Measure active voltage at the contactor (compressor starting)

Is the supply voltage not less than the lowest rated voltage for the ice machine?

Measure PTCR resistance at room temperature (50-100°F)

Is PTCR resistance between 25 and 50 ohms?

Measure resistance to ground from PTCR

Is resistance to ground infinite?

Initial Testing with Indicator Lights

Shut unit off by holding the Off button for 3 seconds

Is the Purge Valve indicator light ON?

Voltage Check if Purge Valve Does Not Open

Shut the unit down by holding the Off button for 3 seconds

Unplug the harness connection from the purge valve

Is the compressor indicator light on when the unit is in ice making mode?

Check if the compressor contactor has pulled in.

Measure voltage on the coil of the contactor.

Is there full voltage present on the contactor coil?

Replace the contactor if there is full voltage but it has not pulled in.

Is the high pressure cut out open?

Measure voltage from the controller to ground at contactor pin 4.