bürkert 3232 Bedienungsanleitung Seite 20

Body
Fig. 11: Replacing the diaphragm
20
Manual actuator
4 fastening screws
Diaphragm
4 fastenings
screws
Mark tab for direction
of flow
english
Type 3232, 3233, 3233 K, 3234,
Repairs
replacement of the diaphragm
Procedure:
→
Clamp valve body in a holding device (applies only to valves not
yet installed).
→
Cross-loosen fastening screws and remove actuator with dia-
phragm from the body.
→
Detach or unscrew old diaphragm. If attachment is with a
bayonet catch, loosen the diaphragm by turning it 90° (see table
"Tab. 10: Fastening types for diaphragm").
→
Turn handwheel all the way clockwise (CLOSED position).
→
Install new diaphragm in the actuator (see "Tab. 10: Fastening
types for diaphragm").
→
Turn handwheel all the way counter-clockwise (OPEN position).
→
Align diaphragm.
note marker for direction of flow!
→
Place actuator back on the body.
→
Lightly cross-tighten the fastening screws until the diaphragm is
between the body and actuator.
do not tighten screws yet.
→
Activate the diaphragm valve once to position the diaphragm
correctly.
→
Tighten the fastening screws with the valve in the open position up
to the permitted tightening torque (see tables in chapter "10.2.1
Tightening torques for diaphragms").
→
Check the tightening torque of the screws again.
3235, 3239