4. Commissioning
4−15
Festo P.BE−VTSA−44−EN en 0509NH
4.5 Eliminating faults
4.5.1 Impairment of function
After switching on the compressed air supply or when subse
quently testing the individual valves, you can learn the follow
ing about the operating status of the pneumatic system:
Operating status of the pneumatic
system
Fault treatment when the compressed air supply
has been switched off
Air escapes from ...
common line or work line connections · Check the tubing fitting
The valve or the pneumatic system ...
does not react as expected
does not react
· Check the tubing
· Check the electric cables
· Bring the locking manual override into the basic
position
· After switching on again check the operating pressure
(if necessary for each pressure zone) Set operating
pressure in accordance with instructions in chapter 3.
· In the case of valve terminals which are operated with
regulated external pilot air, check the pilot pressure
after switching on again (if necessary set as a factor of
the operatin g pressure, see chapter 3)
· Servicing required
Tab.4/7: Function impairment of the pneumatic system
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