Samson 3291, Translation Of Original Instructions

Page: 35 / 96

EB 8072 EN 5-5
Installation
Risk of valve damage due to the use of
unsuitable tools.
Î
Only use tools approved by SAMSON
(
u
AB 0100).
5.3.1 Mounting the external
anti-rotation fixture
Before mounting the actuator, the external
anti-rotation fixture must be mounted onto
the plug stem in some cases. The valve must
be closed beforehand.
For SAMSON Type 3271 and Type 3277
Actuators with Type 3273 Hand-operated
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 290 Valves, NPS 6
and larger
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).
NOTICE !
3
83
82
82
310 310
92
84
85
255
Legend
3 Yoke
82 Screws
83 Hanger
84 Travel indicator scale
85 Screws
92 Castellated nut
255 Warning label
310 Ball bearing
Plug stem
Fig. 5-1: Overview of yoke assembly with travel indicator scale in the standard version
Table 5-4: 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.
14. Extend the actuator stem again and
mount the stem connector clamps.