Product Manual

Design and function
CAP-834 13
1.3.12 Refrigeration dryer
Fig. 15: Refrigeration dryer
The refrigeration dryer (Fig. 15/1) dries the com-
pressed air using a heat exchange process. The
compressed air is fed from the oil separator tank
into the refrigeration dryer and then directed into the
compressed air network via the compressed air
port.
The condensate which accumulates is discharged
via the condensate drain (Fig. 15/2).
Depending on the variant, a hose for
discharging the condensate may
already be attached to the condensate
drain; otherwise, the user will need to
attach one.
1.4 Interfaces
Air supply
Fig. 16: Screw compressor with frequency converter, air
receiver (optional) and refrigeration dryer (optional) 3–
15 kW
The cooling air fan in the compressor housing di-
rects the fresh air to the intake filter and is also used
for process cooling. The intake filter filters the fresh
air and directs it into the compressor unit for com-
pression.
The refrigeration dryer (optional) in the upgrade
module has its own fan. It cools the compressed air
and extracts the heat.
Discharge port
Fig. 17: Discharge port
The air compressed by the compressor is available
to the compressed air network at the discharge
connection after it has been filtered and cooled.