Samson 3246, Mounting And Operating Instructions

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5-4 EB 8046 EN
Installation
Actuator, observe the mounting and operat-
ing instructions of the hand-operated actua-
tor (handwheel) to mount the anti-rotation
fixture
u
EB 8312-X.
a) Standard version for
Series 240 Valves in valve
size DN 200/NPS 8 and
larger as well as Series 250
Valves in valve size DN 125/
NPS 6
See Fig. 5-1 and Fig. 5-2
1. Insert ball bearings (310) into the recess-
es in the bonnet.
2. Place the yoke (3) on the bonnet in such
a way that the ball bearings fit into the
recesses of the yoke.
3. Fasten the yoke (3) using the castellated
nut (92).
4. Fasten the hanger (83) and warning la-
bel (255), if applicable, to the yoke us-
ing the screws (82).
5. Position the travel indicator scale (84) on
the hanger (83) with the screws (85) ac-
cording to Table 5-4.
6. Use a soft-faced hammer or lever press
to press the sliding washers (309) with
their beveled part first (without using any
lubricant) into the recesses of the clamps
(301) as far as they will go. Remove any
excess material.
7. Apply a thin film of lubricant (114) to the
threads of the stem (9) and screws (303).
Impaired functioning due to incorrectly
applied lubricant.
Î
Do not apply any lubricant to the threads
of the clamps (301) or the plug stem.
8. Position the clamps (301) and stem (9)
on the plug stem according to Table 5-4
and tighten screws (303) and washers
(304) by hand.
9. Mount the actuator. See section 5.3.2.
10. Thread the stem (9) upwards until the
head of the stem rests on the extended
actuator stem.
11. Retract the actuator stem to relieve the
stem (9).
12. Gradually tighten the screws (303) in a
crisscross pattern. Observe the tightening
torques specified in Table 5-2.
Table 5-2: Tightening torques
Screw size Tightening torque
[Nm]
M12 50
M16 121
13. 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. 5-2).
− The anti-rotation fixture does not get
stuck on the yoke and can move free-
ly in the direction of travel.
NOTICE !