Design and function
CAP-834
12
1.3.9
Coolers
Fig. 12: Coolers
The compressed air is cooled in the air after-cooler
(Fig. 12/1) before it leaves the screw compressor
via the discharge port (Fig. 12/1).
The oil is cooled by the oil cooler (Fig. 12/2) and fed
back into the oil circuit.
The plate (Fig. 12/3) can be removed for cleaning
the coolers.
1.3.10
Oil filter
Fig. 13: Oil filter
The oil filter (Fig. 13/1) cleans the oil before it is
injected into the compressor airend once again.
1.3.11
Cooling air fan
Fig. 14: Screw compressor with air receiver (optional),
refrigeration dryer (optional) and/or frequency converter
3–15 kWn
The cooling of the air after-cooler and of the oil
cooler is performed by the cooling air fan. The cool-
ing air fan also supplies the intake filter (Fig. 14/1)
with sufficient intake air.
The cooling air inlet and outlet openings must be
kept clear. The required cooling air rates must be
provided in accordance with the technical data for
the screw compressor.
The forced ventilation and bleeding
equipment must be dimensioned so
that the required supply and exhaust air
can be supplied and extracted taking
into account the existing residual thrust
from the cooling air fan. The exhaust
air can also be used for heat
reclamation.
