Harvest Cycle - Scotsman CME650 Service Manual

CME650

Harvest Cycle:

During the harvest cycle, the refrigerant flows from
the compressor, through the discharge line to a
branch in the line containing the Hot Gas Valve.
This valve is Open during the harvest cycle,
allowing the hot discharge gas to bypass the
condenser and enter the evaporator at its inlet.
The hot discharge gases warm up the evaporator
enough to allow the surface of the ice frozen to the
evaporator to melt. The remaining ice will then fall
off into the bin.
Evaporator
Water
Pump
Inlet
Water
Valve
(OPEN)
Water Reservoir
During the Harvest Cycle, the inlet water valve
opens, filling the reservoir and allowing the
reservoir to overflow the drain.
Water Distribution
System
Thermo. Exp.
Valve
Discharge Line
Refrigeration Schematic
August 1994
Page 16
Hot Gas Valve
(OPEN)
Suction Line
Hot Gas
Valve
Filter
Compressor
Liquid Line
Condenser
Fan Motor
Dryer