COMPONENT DESCRIPTION: Control Box
Contactor: A definite purpose contactor
connecting the compressor and the fan motor to
the power supply.
Circuit Board, "B" Model: The circuit board
receives input signals from several electronic
sensors and translates them to control the
electrical power supply to various loads.
The sensors include:
••
Electric eye to check the ice level in the bin.
••
A thermistor to check the water level in the
reservoir.
••
Amp draw of the gear motor.
The loads include:
••
Compressor contactor
••
Fan motor
••
Auger drive motor.
Transformer: "A" Models Only. Supplies low
voltage to the circuit board.
Low Pressure Cut Out Switch: A manual reset
control that shuts off the ice machine when the low
side pressure drops below a preset point, 0-4 psig.
Potential Relay: The compressor start relay.
On/Off Switch: Manual control for the machine.
ON/OFF SWITCH
LOW
PRESSURE
CUT OUT
SWITCH
POTENTIAL
RELAY
TRANSFORMER
CONTACTOR
CIRCUIT
BOARD
FM1202
August 1993
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