bürkert 8691 Bedienungsanleitung Seite 18

2. install sealing rings
→
Pull the form seal onto the actuator cover (smaller diameter points upwards).
→
Check that the O-rings are correctly positioned in the control air connections.
When the control head is being installed, the collets of the control air connections must not be fitted to
the actuator.
Pilot air ports
Caution:
Collets must not be
fitted !
Figure 7: Installing of the sealing rings, 21xx series
3. install the control head
→
Align the puck holder and the
1. the puck holder can be inserted into the guide rail of the control head
and
2. the supports of the control head can be inserted into the pilot air ports of the actuator
(see also "Figure 9: ").
Figure 8: Aligning the puck holder
→
Push the control head, without turning it, onto the actuator until no gap is visible on the form seal.
18
control head until
Guide rail
Puck holder
english
Type 8691
Installation
Form seal
Installation of the form
seal