Samson 3259, Translation Of Original Instructions

Page: 35 / 56

EB 8059 EN 35
Servicing
Risk of valve damage due to the use of un -
suitable lubricants.
Only use lubricants approved by SAMSON
(
u
AB 0100).
The control valve was checked by SAMSON
before it left the factory.
−
Certain test results (seat leakage and leak
test) certified by SAMSON lose their validi
-
ty when the valve body or actuator hous -
ing is opened.
−
The product warranty becomes void if ser -
vice or repair work not described in these
instructions is performed without prior
agreement by SAMSON's After‑sales Ser
-
vice department.
−
Only use original spare parts by
SAMSON, which comply with the original
specifications.
7.1 Preparing the valve for
servicing
We recommend removing the valve from the
pipeline for service or repair work (see sec-
tion 9.2).
7.2 Replacing the body gasket
7.2.1 Standard version
1. Remove the actuator from the valve. See
associated actuator documentation.
2. Undo the body nuts (14) gradually in a
crisscross pattern. Remove the bolts (13).
3. Unscrew the intermediate piece (2) to-
gether with the plug (5) from the body
(1).
4. Remove the body gasket (17). Carefully
clean the sealing faces in the body (1)
and on the intermediate piece (2).
5. Apply a suitable lubricant to the new
body gasket (17) and insert it into the
body.
6. Push the intermediate piece (2) together
with the plug (5) into the body (1).
Make sure that the threaded flanges (57,
111) are positioned parallel to each oth-
er and that their bolt holes are aligned
exactly above one another.
Version with V‑port plug: place the in-
termediate piece (2) onto the valve body,
making sure that the largest V-shaped
port of the V-port plug faces toward the
valve outlet. See section 5.1.
7. Insert the bolts (13) through the threaded
flanges (57, 111) and tighten them, ob
-
serving the tightening torque.
8. Tighten the body nuts (14) gradually in a
crisscross pattern. Observe tightening
torques.
9. Mount actuator. See associated actuator
documentation.
10. Adjust lower or upper signal bench
range. See associated actuator docu-
mentation.
NOTICE !
Note