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On process valves of series 21xx – Burkert Type 8690 User Manual

Page 16

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16

Installation

7.2.

installation of the pneumatic
control unit Type 8690 on
process valves of series 21xx

procedure:
1. install switch spindle:

Transparent cap

Actuator

Pilot air ports

(plug-in hose con-

nectors with collets or

threaded bushings)

Fig. 6: Installation of the switch spindle (1), 21xx series

Unscrew the transparent cap on the actuator and unscrew the
position display (yellow cap) on the spindle extension.

For version with plug-in hose connector, remove the collets
(white nozzles) from both control air connections (if present).

O-ring
Spindle extension

Guide element

Actuator cover

Groove ring

Switch cam

Switch spindle

10

max. 5 Nm

max. 1 Nm

Fig. 7: Installation of switch spindle (2), 21xx series

noTE!

improper installation may damage the groove ring in the
guide element!
The groove ring is already be pre-assembled in the guide element
and must be “locked into position” in the undercut.
• When installing the switch spindle, do not damage the groove ring.

Push the switch spindle through the guide element.

english

Type 8690 Ex