Refrigeration System Section 7
7-2 Part No. 80-1100-3
Figure 7-2. Self-Contained Harvest Cycle (Models Q200/Q280/Q320/Q370/Q420/Q450/Q600/Q800/Q1000)
Harvest Cycle Refrigeration Sequence
Hot gas flows through the energized harvest valve,
heating the evaporator. The harvest valve is sized to
allow the proper amount of refrigerant into the
evaporator. This specific sizing (along with the proper
system refrigerant charge) assures proper heat transfer,
without the refrigerant condensing and slugging the
compressor.
HEAT
EXCHANGER
EVAPORATOR
CONDENSER
COMPRESSOR
EXPANSION VALVE
HARVEST SOLENOID VALVE
AIR OR WATER
DRIER
STRAINER
RECEIVER
(WATER COOLED ONLY)
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