Festo IIFB9-02 Series, Manual

Page: 52 / 165

Incorrect functioning
When the compressed air supply is switched on
or during the subsequent test of the valves, the
following is known about the operating status of
the pneumatic system:
Locking the manual override
WARNING
The manual override must be protected
against unauthorised use in systems where
security is of great importance.
A conversion must be made to the manual over-
ride before it can be locked.
Operating status
of pneumatic system Valve position Error treatment
after switching off
compressed air supply
Air comes out . . .
●
of common line connections
●
of work line connections
●
Basic setting
●
Switch
position
Check the seal or
tubing fitting
Valve or pneumatic system . . .
●
does not react as expected
●
does not react
●
Switch
position
●
Switch
position
●
Check the tubing
●
If neccessary, check the
auxiliary pilot air
●
Check operating pressure
●
If neccessary, check the
auxiliary pilot air
●
Return for repair
Fig. 4/11: Operating status of the pneumatic system
VIFB9 - 02 4. Installation
9609
4-15