COMPONENT DESCRIPTION
Control Box: Contains the electrical controls
that operate the machine.
High Pressure Cut Out Switch: A manual
reset switch sensing the high side refrigeration
pressure. It is set to shut the machine off, and
illuminate the reset switch light if the discharge
pressure should ever exceed 450 psig.
Reset Switch: A manual reset switch, used
for restarting the ice machine should the ice
discharge chute overfill with ice; the low
pressure cut out switch open; or the high
pressure cut out switch open.
Evaporator: A vertical stainless steel tube,
refrigerated, and water filled. In it there is a
stainless steel auger.
Compressor: The refrigerant vapor pump.
Reservoir: Float operated, it maintains the
water level in the evaporator at a constant
level, it also contains the water level sensor.
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
produced 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.
Drain Tube: When uncapped and lowered,
drains the evaporator.
Condenser: Air or water cooled, where the
heat removed in ice making is discharged.
Expansion valve: The refrigerant metering
device.
AIR COOLED
CONTROL
BOXES
CONDENSERS
EXPANSION
VALVES
RESERVOIRS
ICE CHUTES
COMPRESSOR
ICE LEVEL
SENSORS
CONTROL
BOXES
HIGH
PRESSURE
CUT OUT
WATER
COOLED
There are two of each of the above components in the NM1850.
NM1850
May, 1989
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