Scotsman NSE650 User Manual page 9

COMPONENT DESCRIPTION: Control Box
Contactor: A definite purpose contactor
connecting the compressor and the remote
condenser fan motor to the power supply.
Circuit Board: Controlling the ice machine
through sensors and relays. The sensors are for
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.
ON/OFF SWITCH
LOW PRESSURE
CUT OUT SWITCH
START
CAPACITOR
POTENTIAL
RELAY
August 1993
Transformer: 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.
TRANSFORMER
CONTACTOR
Page 9
NSE650
"No Water" Light, glows
when water level in
reservoir is too low.
CIRCUIT
BOARD
"Bin Empty"
Light, glows
when ice level in
storage bin is
not full.