Samson 3525, Монтаж и эксплуатация

Страница: 43 / 56

EB 8823 EN 43
Maintenance
4. Unscrew the seat (4) using a suitable
tool.
5. Remove seat ring gasket (127) from the
body (1) and carefully clean the sealing
face. Insert a new seat ring gasket into
the body.
6. Apply a suitable lubricant to the thread
and the sealing cone of the new seat.
7. Screw in the new seat (4) using a suit-
able tool. Observe tightening torques.
8. Carefully warm up the plug (29) so that
it can be removed from the plug stem
(36) in the next step.
9. Apply a signal pressure to the actuator
so that the flats at the plug stem (36)
emerge from the bonnet. Place wrench
on flats.
10. Place another wrench on the flats of the
plug (29).
11. Loosen plug with wrench while counter-
ing with the top wrench.
12. Apply suitable threadlocker to the thread
of the new plug (29).
13. Screw plug head (29) onto the plug stem
(36) using a suitable tool. Observe tight-
ening torques.
14. Replace packing (15) as described in
section 7.2.2.
15. Apply a suitable lubricant to the bonnet
(2).
16. Screw bonnet (2) with yoke (3) and plug
with plug stem (5) into the body (1). Ob-
serve tightening torques.
Tungsten carbide or ceramic plug
1. Remove stem connector clamp (A28).
See associated actuator documentation.
It is not necessary to completely remove the
actuator from the valve to replace the seat
and plug.
2. Apply a signal pressure to the actuator to
slightly lift the plug off the seat. Unscrew
the bonnet (2).
3. Lift bonnet (2), yoke (3) and plug with
plug stem (5) off the body (1).
4. Replace O-rings (17) as described in
section 7.2.1.
5. Unscrew the seat (4) using a suitable
tool.
6. Remove seat ring gasket (127) from the
body (1) and carefully clean the sealing
face. Insert a new seat ring gasket into
the body.
7. Apply a suitable lubricant to the thread
and the sealing cone of the new seat.
8. Screw in the new seat (4). Observe tight-
ening torques.
9. Replace plug with plug stem (5) and in-
sert it into the bonnet (2).
10. Apply a suitable lubricant to the bonnet
(2).
11. Screw bonnet (2) with yoke (3) and plug
with plug stem (5) into the body (1). Ob-
serve tightening torques.
Note