Scotsman ND650 Service Manual page 13

ND650
COMPONENT DESCRIPTION: Control Box
Contactor: A definite
purpose contactor connecting
the compressor to the power
supply.
PORTION
CONTROL
Circuit Board: Controlling
MODULE
the ice machine through
sensors and relays. The
sensors are for ice level and
water level. The relays are for
POTENTIAL
the gear motor (with a built in
RELAY
time delay to clear the
evaporator of ice when the
unit turns off) and for the
compressor. The reset switch
CONTACTOR
is mounted on the circuit
board.
On/Off Switch: Manual
TRANSFORMER
control for the machine.
Transformer: Supplies low
ON-OFF SWITCH
voltage to the circuit board.
Potential Relay: The
compressor start relay.
Reset Switch: Part of Circuit
CIRCUIT
Board, manual reset. Lights up
BOARD
when unit shuts off from: ice
discharge chute being
overfilled (opening the
microswitch at the top of the
chute); low or high pressure
switches opening.
Portion Control Module:
Controls the amount of time
the dipensing drive motor is
on. The time is varied by
adjustine the portion control
knob.
RESET
SWITCH
March, 1989
Page 13