Table of Contents
Advertisement
8. Place the compressor (A27) onto the ac-
tuator stem (A7).
9. Check the sealing element on the collar
nut (A15). If necessary, renew it.
10. Tighten the collar nut (A15). Observe
tightening torques.
11. Apply a suitable lubricant to the actuator
stem (A7).
12. Insert the actuator stem (A7) together
with the diaphragm plate (A5) and dia-
phragm (A4) into the bottom diaphragm
case (A2). Make sure that the radial
shaft seal (A40) is not damaged.
13. Place the springs (A10) into the bottom
diaphragm case, centering them in the
intended recesses.
14. Place on the top diaphragm case (A1).
15. Without spring compression: fasten the
top and bottom diaphragm cases (A1,
A2) together with the nuts (A21) and
bolts (A20). Observe tightening torques.
With spring compression: fasten the top
and bottom diaphragm cases (A1, A2)
together with the nuts (A21) and long
bolts (A22). Fasten the nuts (A21) and
short bolts (A20). Observe tightening
torques.
16. Mount the actuator on the valve (see sec-
tion 5.1).
Version with direction of action "actuator
stem retracts" (FE)
1. Lift the actuator off the valve. See sec-
tion 9.2.
2. Unscrew the nuts (A21) and bolts (A20)
on the diaphragm case.
EB 8317 EN
3. Lift off the top diaphragm case (A1).
4. Pull the actuator stem (A7) together with
the diaphragm plate (A5) and dia-
phragm (A4) out of the bottom dia-
phragm case (A2).
5. Unscrew the collar nut (A15).
6. Take the compressor (A27), diaphragm
plate (A5), and diaphragm (A4) off the
actuator stem (A7).
7. Place the new diaphragm on the dia-
phragm plate (A5).
8. Place the compressor (A27) onto the ac-
tuator stem (A7).
9. Check the sealing element on the collar
nut (A15). If necessary, renew it.
10. Tighten the collar nut (A15). Observe
tightening torques.
11. Check whether the springs (A10) rest
correctly in the bottom diaphragm case
(A2).
12. Apply a suitable lubricant to the actuator
stem (A7).
13. Insert the actuator stem (A7) together
with the diaphragm plate (A5) and dia-
phragm (A4) into the bottom diaphragm
case (A2). Make sure that the radial
shaft seal (A40) is not damaged.
14. Place on the top diaphragm case (A1).
15. Fasten the top and bottom diaphragm
cases (A1, A2) together using the nuts
(A21) and bolts (A20). Observe tighten-
ing torques.
16. Mount the actuator on the valve (see sec-
tion 5.1).
Servicing
43
Advertisement
Table of Contents
