Samson EB 8048-3, Монтаж и эксплуатация

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EB 8048-2/-3 EN 39
Servicing
installed diaphragms). We recommend
shaping the new diaphragms beforehand us
-
ing conventional hex screws:
− Tighten the conventional hex screws as de -
scribed in step 20.
− Replace the conventional hex screws with
the existing hex screws (34).
− Tighten the hex screws (34) as described in
step 20.
21. Mount actuator. See associated actuator
documentation.
22. Adjust lower or upper signal bench
range. See associated actuator docu-
mentation.
7.2 Version with Type 3379
Actuator
To prevent the actuator stem from rotating, a
locking pin with 3.5 mm diameter is re
-
quired. The locking pin (item no. 1281‑
0066) can be ordered from SAMSON.
7.2.1 Replacing the packing
1. Undo the screws (34) on the valve
bonnet (20).
2. Lift the actuator (A) and valve bonnet
(20) together with the plug stem (3), plug
(2), and diaphragm (24) off the body
(1).
Note
42
19
19
19
23
15
15 Spring
19 Washer
23 V-ring packing
42 Snap ring
Fig. 14: Detailed view of backup packing