Nse650, Component description: control box – 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.
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.
ON/OFF SWITCH
LOW PRESSURE
CUT OUT SWITCH
POTENTIAL
RELAY
CONTACTOR
CIRCUIT
BOARD
TRANSFORMER
START
CAPACITOR
"Bin Empty"
Light, glows
when ice level in
storage bin is
not full.
"No Water" Light, glows
when water level in
reservoir is too low.
NSE650
August 1993
Page 9