Samson 3273 Mounting And Operating Instructions page 28

Installation
NOTICE
!
Impaired functioning due to incorrectly ap-
plied lubricant.
Î Do not apply any lubricant to the threads
of the clamps (301) or the plug stem.
9. Position the clamps (301) and stem con-
nector rod (G5) on the plug stem accord-
ing to Table 3 and tighten screws (303)
and washers (304) by hand.
10. Place the handwheel on the yoke (G4)
(belonging to the valve) so that it faces
the operating side. The inscription on the
valve body (1) serves as a guide (as it al-
so faces the operating side).
11. Apply a suitable lubricant to the thread
of the fastening nut (G9).
12. Slide the fastening nut (G9) over the stem
connector nut (G71) and screw it tight at
the yoke (G4). Observe tightening
torques.
13. Move the handwheel to the neutral posi-
tion (see section 7.1).
14. Turn the handwheel to slowly extend the
threaded rod (G16) downward until the
threaded rod (G16) rests on the stem
connector rod (G5).
15. Readjust the stem connector rod (G5), if
necessary.
16. Gradually tighten the screws (303) in a
crisscross pattern. Observe the tightening
torques specified in Table 2.
28
Table 2: Tightening torques
Screw size
M12
M16
17. Check and ensure the following:
− There is a nominal clearance of 0.5
to 1 mm between the sliding washers
and their contact surface on the yoke
on each side (see detailed view Y in
Fig. 8).
− The anti-rotation fixture does not get
stuck on the yoke and can move free-
ly in the direction of travel.
18. Mount the stem connector clamp
(G26/27/29) on the threaded rod
(G16) and stem connector rod (G5).
Aligning the travel indicator scale
After mounting the actuator (see section 5.3)
the travel indicator scale must be aligned. To
do so, align '0' on the travel indicator scale
with the tip of the stem connector clamp (see
Fig. 9).
1. Move the valve to the closed position.
2. Loosen the screws on the travel indicator
scale.
3. Align the travel indicator scale.
4. Fix the travel indicator scale into place
by tightening the screws.
Tightening torque
[Nm]
50
121
EB 8312-2 EN