Elektra Beckum Cool 401 - Manual (Page 15)

15 11.02
The nominal power of the CA-dryer mentioned in the
technical data is related to a working pressure of 7 bar,
a compressed air inlet temperature of 35 °C as well as
an ambient temperature of 25 °C acc. to DIN ISO 7183.
Lower working pressure, higher compressed air inlet tem-
perature and/or higher ambient temperatures overload
the compressor which causes to an increased pressure
dew point and the compressor can be stopped by inter-
nal safety devices.
At essentially deviating operation conditions, contact the
deliverer of the CA-dryer for support.
The CA-dryer includes a refrigerant system cooling the
compressed air flow. The steam saturation limit is low-
ered causing condensate to fall out, which is removed
by the condensate drain.
The higher the cooling temperature difference of the air,
the higher the amount of condensate.
The lower the cooling temperature of air, the lower the
moisture content.
The lower limit of air cooling results from the operating
principle of the CA-dryer based on the moisture separa-
tion in liquid form.
So the freezing point of water (0 °C) must not be under-
gone.
The compressed air precooled in the aftercooler and
saturated with moisture enters into the CA-dryer and is
precooled in the first cooling stage, the air-to-air heat
exchanger without additional energy. Cooling is carried
out in counterflow to the already cooled air heated dur-
ing this process.
The cooling to the pressure dew point is performed in
the second cooling stage, the refrigerant-to-air heat ex-
changer cooled by the refrigerant system installed. Sub-
sequently, the cooled compressed air is reheated in the
air-to-air heat exchanger as already described.
The pressure dew point is indicated at the electronic
regulator panel.
3.5 Nominal power of
CA-dryer
3.6 Principle of opera-
tion
3.7 Mode of operation
3.7.1 Compressed air side
Part 3 Description