Elektra Beckum Cool 401 - Manual (Page 16)

16 11.02
The refrigerant is injected into the refrigerant-to-air heat
exchanger where it evaporates, thereby the compressed
air is cooled. The electronic regulator regulates the cool-
ing temperature and keeps the pressure dew point con-
stant in nearly all capacity stages.
The refrigerant compressed by the motor compressor is
condensed within the condenser and is available for the
evaporation again.
The condensate drain is used for draining the conden-
sate.
Depending on the ambient- and cooling temperature of
the CA-dryer, the solenoid valve is opened by the
electronic regulator. This ensures a compressed air con-
densate draining with nearly no loss of compressed air.
If the condensate volume deviates from the set values
(see 4.6.1.6) the adaptation to the specific characteristics
of compressed air system is possible (see 4.6.1.6)
Once the container has filled with condensate, so that
the capacitive level sensor emits a signal, the internal
solenoid valve opens and the condensate is forced by
the working pressure into the discharge pipe.
The condensate drain electronic system ensures the
closing of the outlet opening before any compressed air
can escape. For functional safety a minimum pressure
of 2 bar is necessary.
At faulty condensate discharge (blocked discharge pipe,
pressure below minimum operating pressure), the unit
changes to the alarm control after 60 seconds. The green
LED flashes and a potential-free contact is activated.
While in alarm control mode, the solenoid valve will open
every 4 minutes for a period of 7,5 seconds, in order to
remove any possible obstructions in the discharge pipe
automatically.
A unit filled during a pressureless state will additionally
be emptied automatically, as soon as the minimum pres-
sure within the condensate drain has been reached.
3.7.2 Refrigerant side
3.8 Condensate draining
3.8.1 Condensate drain
electromagnetic
3.8.2 Condensate drain
sensor-controlled
(option)
Fig. 11: Condensate drain
reports
Part 3 Description
1 2 3
Power
Alarm
Test
Power
Alarm
Test
Power
Alarm
Test