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Components:
•
Refrigeration system, including air cooled
condenser, compressor, capillary tube and
evaporator.
•
Control system, including ice level sensor,
water sensor, auger motor sensor, controller,
control pad and transformer.
•
Auger drive system, including auger motor,
gear reducer and auger.
•
Auger support system, including top bearing
and water seal.
•
Water system, including the float and
reservoir.
•
Storage system, including ice storage bin,
drain and door.
The SCN60 is a continuous flow ice machine.
When the control system senses that the storage
bin’s ice level is low, it turns on the compressor, fan
motor and auger drive motor.
During ice making the refrigeration system takes
heat from the evaporator. The evaporator is a
vertical refrigerated stainless steel tube containing
water and a slowly rotating auger. When the water
gets to the freezing point, ice begins to form. That
ice is very soft and is pushed up the evaporator
tube by the auger. As ice is made more warm
water enters at the bottom. The soft, mushy ice is
forced up to the top of the evaporator’s tube where
it is forced through nine tapered holes. As the ice is
pushed through the holes excess water is
squeezed out. The ice comes out of the holes
shaped as a rod of ice. The rods of ice are broken
off by being pushed against the tapered flange
above the holes, forming the irregular lengths of
nugget ice. The ice sweep, rotating with the auger,
moves the ice to the ice chute where it falls by
gravity into the storage bin.
May 2011
Page 2
SCN60
Service
Refrigeration System Schematic
Air Cooled
Condenser
Capillary Tube
Compressor
Evaporator
Assembly
Auger Drive
System
Liquid Line
Suction Line /
Heat
Exchange