Component Description - Scotsman NM1250 Service Manual

NM1250

COMPONENT DESCRIPTION

Control Box: Contains the electrical controls
that operate the machine.
Low Pressure Cut Out: A manual reset
switch set to shut the machine off should the
low side pressure go below 0-4 psig.
High Pressure Cut Out: A manual reset
switch sensing the high side refrigeration
pressure. It is set to shut the machine off at
450 psig.
Reset Switch: Manual reset. Glows when the
unit shuts off from ice discharge chute being
overfilled (opening the microswitch at the top
of the chute), or if either of the pressure cut
out switches opens.
Evaporator: A vertical stainless steel tube,
refrigerated, and water filled. In it, there is a
stainless steel auger.
Reservoir: Float operated, it maintains the
water level in the evaporator at a constant
level, it also contains the water level sensor.
CONTROL BOX
RESERVOIR
WATER LEVEL SENSOR
(INSIDE RESERVOIR)
STRAINER
COMPRESSOR
HIGH PRESSURE
CUT OUT
Water Level Sensor: Senses if there is water
in the reservoir to make ice out of. Will shut
the machine off it there is none.
Ice Discharge Chute: Directs the ice made by
the evaporator into the storage bin.
Ice Level Sensor: An electronic "eye", it
senses the presence of ice in the bottom of
the ice discharge chute. Operates to turn the
ice machine on and off automatically as the
level of ice in the bin changes.
Gear Motor: An oil filled, speed reduction
gearbox, driving the auger.
Cleaning Drain Tube: When uncapped and
lowered, drains the evaporator.
Compressor: The refrigerant vapor pump.
Condenser: Air or water cooled, where the
heat removed in ice making is discharged.
Expansion valve: The refrigerant metering
device.
RESET SWITCH
February, 1989
Page 10
LOW PRESSURE
CUT OUT
CONDENSER
ICE CHUTE
EXPANSION
VALVE
EVAPORATOR
CLEANING DRAIN
TUBE
GEARMOTOR
GEARMOTOR/EVAPORATOR
MOUNTING PLATE:
SLIDES OUT FOR SERVICE
ICE LEVEL
SENSOR