Filtration Group AF 172 G2, Original Instructions Manual

Page: 13 / 36

Page 13
Translation of the original instructions with assembly instructions AF 172 G2, Filtration Group GmbH, 09.12.17, Mat. No. 70355433, Version 05
14 Troubleshooting
Fault Possible cause Remedy
Gear motor
does not turn Motor circuit-
breaker tripped RESET the motor
circuit-breaker
Check the gear
motor
Filtered fluid
solidified Clean the filter
Valves do not
open Not enough
compressed air Increase the
pressure
Precontrol valve
defective Check the
precontrol valve
Precontrol valve
connected
incorrectly Check the
electrical and
pneumatic
connections
Same compressed
air line used for
external pressure
and valves Provide a separate
compressed air
line for the valves
Initial
differential
pressure
no longer
reached Solids
concentration too
high Use a suitable
prefilter
Cleaning time too
short Increase the
cleaning time (at
least 1 - 2
revolutions of the
gear motor)
External pressure
too high/low Reduce/increase
the external
pressure
External pressure
valve dirty/
defective Clean/replace the
external pressure
valve
Backflush valve
dirty/defective Clean/replace the
backflush valve
Increased
concentration of
dirt on clean
side Segmented
element defective Check the
segmented
element and if
necessary renew it
Seals brittle Check the seals
and if necessary
renew them
Excessive
leakage on
shaft seal Shaft seal
defective Renew the shaft
seal
Shaft seal
incorrectly
mounted Check the seat of
the shaft seal
Filtered fluid in
compressed air
line External pressure
valve dirty/
defective Clean/replace the
external pressure
valve
Check valve
dirty/defective Clean/replace the
check valve
15 Maintenance
DANGER!
Explosion hazard!
Risk of injury to persons or damage to
property.
•
Work is only allowed to be carried out in
hazardous areas if appropriate safety
precautions are implemented.
•
Safety precautions must be implemented
by the owner.
WARNING!
If the system is maintained by unauthorised persons
Risk of injury
All warranty claims are rendered invalid
•
The system must be maintained by a suitably trained
person!
Before all maintenance work:
•
Shut down the automatic filter (section 12).
•
Take steps to prevent the machine/system from being
switched on again by unauthorised persons.
•
Wear protective clothing and equipment appropriate to
the hazard potential of the medium (e.g. goggles,
respirator, protective clothing, etc.).
•
Carry out the maintenance work.
•
Start up the automatic filter again (section 10).