Samson 3353, Оригинальное руководство пользователя

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26 EB 8139 EN
Servicing
the packing chamber thoroughly. Renew
the packing.
13. Slide the plug/actuator stem (14) into the
valve bonnet (10).
14. Carefully slide the packing parts over the
plug/actuator stem into the packing
chamber using a suitable tool. Keep the
correct sequence:
− Spring (21)
− Washer (44)
− V-ring packing (22)
15. Place the top slip washer (38) into the
actuator base.
16. Push the threaded bushing (11) into the
actuator base (6). Make sure that the
O-ring (36) is correctly seated in the
threaded bushing.
17. Place the bottom slip washer (38) on the
valve bonnet (10).
18. Screw the threaded bushing (11) togeth-
er with the actuator base (6) over the
plug/actuator stem (14) onto the valve
bonnet (10).
Tighten the threaded bushing only to the
point where the actuator base (6) can
still rotate on the slip washers (38).
19. Screw tight the retaining screw (60) at
the side to fix the threaded bushing in
place.
20. Slide the washer (43) and O-ring (33)
onto the plug/actuator stem (14).
21. Place on the piston (3) with piston ring
(23) and washer (43).
22. Insert the washer (46) and spring (20)
into the piston (3).
23. Tighten the nut (49) intended for fasten-
ing the piston, while holding the plug/
actuator stem (14) stationary at the flat -
tened part with an 8 mm open-end
wrench.
24. Put on actuator housing (2) and fasten it
tight onto the actuator base (6) by tight-
ening the screws (47) gradually in a
crisscross pattern.
25. Replace the body gasket (31). See sec-
tion 7.1.
26. Screw the valve bonnet (10) with actua-
tor onto the body (1). Observe tightening
torques.
Fail-open (FE)
1. Position a 26 mm open-end wrench on
the valve bonnet (10) and unscrew the
entire actuator including the valve bonnet
from the body (1).
2. Undo the screws (47) gradually in a
crisscross pattern.
3. Lift off the actuator housing (2).
4. Unscrew the nut (49) from the plug/actu-
ator stem using a socket wrench, while
holding the plug/actuator stem (14) sta-
tionary at the flattened part with an
8 mm open-end wrench.
5. Remove washer (43), piston (3) together
with the piston ring (23), O-ring (33)
and washer (43).
6. Remove the springs (20).
7. Unscrew the retaining screw (60) at the
side using a 2 mm hex screwdriver.