SCN60
Service
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.
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| Suction Line / |
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| Compressor |
| Heat |
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| Exchange | Evaporator | |||||||||||||||||
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| Assembly | |
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Air Cooled | Liquid Line | |
Condenser | ||
|
Capillary Tube | Auger Drive |
| System |
Refrigeration System Schematic
May 2011
Page 2
