22
07.03
Part 5
Maintenance
5.2.5
Stopping CA-dryer
during operation:
Cause
Stopping of CA-dryer
by installed pressure
limiter due to overload
5.2.5.1
CA-volume flow too
high
5.2.5.2
CA-inlet temperature
too high
5.2.5.3
Room temperature too
high
5.2.5.4
Defective fan or cooling
water regulator resp.
(water-cooled version)
5.2.5.5
Condenser polluted
5.2.5.6
Operating pressure too
low
Failure acknowledgement
5.2.6
High differential
pressure at CA-side:
Cause
5.2.6.1
CA-volume flow too
high
5.2.6.2
Operating pressure too
low
5.2.6.3
Icing of CA-dryer
Remedy
- eliminate cause of trouble
- open left side panel
Check whether CA-dryer´s capacity is properly selected,
increase CA-dryer´s capacity
Install aftercooler behind the compressed air compres-
sor or check if already installed
Ensure proper ventilation of CA-dryer´s location
Replace fan or cooling water regulator resp.,
call for service
Clean condenser
Increase operating pressure,
check whether CA-dryer´s capacity is properly selected
For failure acknowledgement press reset-button at
pressure limiter
Remedy
Check whether CA-dryer´s capacity is properly selected,
increase CA-dryer´s capacity
Increase operating pressure,
check whether CA-dryer´s capacity is properly selected
Characteristics:
- differential pressure at CA-side
increases
- volume flow decreases
Disconnect unit and maintain compressed air flow. After
approx. half an hour, the differential pressure will return
to normal value. Restart the unit. If the heat exchanger
ices up, again callfor service