Reference Compressor control module
0 Stop
Reference Optional equipment
B1 Electronic water drain
Y10 Timer drain
K25 Phase sequence relay
S10 Main switch
R96 Anti-condensation heaters
2.9 Air dryer
Description
Air dryer
Air circuit
Compressed air enters heat exchanger (10) and is cooled by the outgoing, cold, dried air. Water in the incoming
air starts to condense. The air then flows through heat exchanger/evaporator (4) where the refrigerant
evaporates causing the air to be cooled further to close to the evaporating temperature of the refrigerant. More
water in the air condenses. The cold air then flows through separator (5) where all the condensate is separated
from the air. The condensate is automatically drained. The cold, dried air flows through heat exchanger (10)
where it is warmed up by the incoming air.
Refrigerant circuit
Compressor (1) delivers hot, high-pressure refrigerant gas which flows through condenser (2) where most of
the refrigerant condenses.
The liquid flows through liquid refrigerant dryer/filter (8) to capillary tube (7). The refrigerant leaves the
capillary tube at evaporating pressure.
The refrigerant enters evaporator (4) where it withdraws heat from the compressed air by further evaporation
at constant pressure. The heated refrigerant leaves the evaporator and is sucked in by the compressor (1).
Instruction book
2920 7083 31 25
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