Burkert Type 8690 - Manual (Page 14)

14
Installation
2. install sealing rings
Form seal
Pilot air ports
Caution:
Collets must not be
fitted !
Installation of
the form seal
Fig. 7: Installing of the sealing rings, 21xx series
→
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 Pneumatic Control Unit is being installed, the collets
of the pilot air ports must not be fitted to the actuator.
3. installation of the pneumatic control unit:
Connection
pieces
Pilot air
ports
Fastening
screws
max. 0,5 Nm
Fig. 8: Installation of the Pneumatic Control Unit, 21xx series
→
Align the Pneumatic Control Unit until the connection pieces
of the Pneumatic Control Unit can be inserted into the pilot air
ports of the actuator (see also “Fig. 8”).
→
Push the Pneumatic Control Unit, without turning it, onto the
actuator until no gap is visible on the form seal.
noTe!
too high torque when screwing in the fastening screw does
not ensure degree of protection ip65 / ip67.
▶ The fastening screws may be tightened to a maximum torque of
0.5 Nm only.
→
Attach the Pneumatic Control Unit to the actuator using the two
side fastening screws. In doing so, tighten the screws only hand-
tight (max. torque: 0.5 Nm).
english
Type 8690