Scotsman NME1250 Service Manual page 10

NME1250
COMPONENT DESCRIPTION: Control Box
Contactor: A definite purpose contactor
connecting the compressor to the power supply.
Circuit Board: Controlling the ice machine
through sensors and relays. The sensors are: ice
level, and water level. The relays are for the gear
motor (with a built in time delay to clear the
evaporator of ice when the unit turns off) and for
the compressor.
TRANSFORMER
CIRCUIT BOARD
Transformer: Supplies low voltage to the circuit
board.
Low Pressure Control (Cut Out): A manual reset
control to shut 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.
June 1994
Page 10
LOW PRESSURE
CUT OUT
ON/OFF SWITCH
POTENTIAL RELAY
CONTACTOR