Festo IIFB11-02 Series, Manual

Page: 57 / 210

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
override before it can be locked. Proceed as
follows:
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
VIFB11 - 02 4. Installation
9902d
4-17