20
Mechanical installation
1. Installing the switch spindle
Transparent cap
Actuator
Pilot air ports
(plug-in connectors with collets or
threaded bushings)
Position indicator
Figure 7:
Installing the switch spindle (1), integrated pilot air duct
→
Unscrew the transparent cap from the actuator.
→
Unscrew position indicator from spindle extension.
→
For variant with hose connector: remove the collets (white sleeves) from the pilot air ports.
Spindle extension
Guide element
Actuator cover
Lip seal
Puck
Switch spindle
Max. 5 Nm
Max. 1 Nm
O-ring
Figure 8:
Installing the switch spindle (2), integrated pilot air duct
NOTE
Lip seal can be damaged if incorrectly installed.
The lip seal is pre-mounted in the guide element and must be "locked into position" in the undercut.
▶
When installing the switch spindle, do not damage the lip seal.
→
Slide switch spindle through the guide element.
NOTE
Contamination of the lip seal due to screw locking paint.
▶
Do not apply any screw locking paint to the switch spindle.
→
To secure the switch spindle, apply some screw locking paint (e.g. Loctite 290) in the threading of the
spindle extension in the actuator.
→
Check that the O-ring is in the correct position.
→
Screw guide element in actuator cover (tightening torque: max. 5 Nm).
→
Screw switch spindle onto the spindle extension. A slot is provided on the top side (tightening torque:
max. 1 Nm).
→
Push puck onto the switch spindle and lock into position.
english
Type 8691 REV.3
Summary of Contents for 8691 REV.3
Page 1: ...Operating Instructions Type 8691 REV 3 Control Head ...
Page 63: ......
Page 64: ...www burkert com ...
