Scotsman NME650R Service Manual page 14

NME650R
COMPONENT DESCRIPTION: Control Box
Contactor: A definite purpose contactor
connecting the compressor and the remote
condenser fan motor to the power supply.
Circuit Board: The circuit board receives input
signals from several sensors and tranlsates them
to control the electrical power to the various loads.
The sensors inlcude:
ice level in the bin (with electric eyes)
Water level in the reservoir (with a thermisitor)
Amp draw of the auger drive motor
ON/OFF SWITCH
PUMP DOWN CONTROL
POTENTIAL RELAY
TRANSFORMER
CIRCUIT
BOARD
The loads include:
Liquid line coil
Auger drive motor
Pump Down Control: An automatic reset
pressure switch connected to the low side of the
refrigeration system. Controls the compressor.
Potential Relay: The compressor start relay.
On/Off Switch: Manual control for the machine.
June 1994
Page 14
CONTACTOR