Festo VTSA Series Description page 76

2. Mounting
Dismounting
2−16
Note
The MO cover caps serve for limiting the function of the
MO (see description of cover caps) and are constructed so
that they can only be removed with a great deal of
strength.
If you wish to remove the cover caps, note that the snap
hook of the cover caps may become damaged when the
hooks are dismantled.
Proceed as follows:
Use a suitable screwdriver to lift the manual override caps
·
out of the manual overrides (see fig.):
Fig. 2/6: Dismounting the manual override caps
Festo P.BE−VTSA−44−EN en 0905e