bürkert 8690 Bedienungsanleitung Seite 13

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For model with plug-in hose connector, remove the collets (white
nozzles) from both pilot air ports (if present).
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.
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Push the switch spindle through the guide element.
Type 8690
Installation
Switch cam
Switch spindle
Guide element
Groove ring
max. 1 Nm
max. 5 Nm
Actuator cover
O-ring
Spindle extension
note!
screw locking paint may contaminate the groove ring.
▶ Do not apply any screw locking paint to the switch spindle.
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To secure the switch spindle, apply some screw locking paint
(Loctite 290) in the tapped bore of the spindle extension in the
actuator.
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Check that the O-ring is correctly positioned.
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Screw the central screw to the actuator cover (maximum torque:
5 Nm).
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Screw switch spindle onto the spindle extension. To do this,
there is a slot on the upper side (maximum torque: 1 Nm).
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Position the switch cam on the switch spindle so that the distance
between the switch cam and top of the spindle is 10 mm (see
"Fig. 7")
english
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