Operation; Working In Automatic Operation - Samson 3273 Mounting And Operating Instructions

7 Operation

The handwheel is ready for use when mount-
ing and start-up have been completed.
WARNING
!
Crush hazard arising from moving parts
(actuator stem, threaded rod, plug stem,
handwheel).
Î Do not insert hands or finger into the
yoke while the valve is in operation.
NOTICE
!
Operation disturbed by a blocked actuator
stem, threaded rod or plug stem.
Î Do not impede the movement of the actu-
ator stem, threaded rod or plug stem by
inserting objects into their path.
Fig. 10: Neutral position in automatic operation
EB 8312-2 EN
The valve position is adjusted by the hand-
wheel in manual operation. It can be adjust-
ed either when the supply air is still applied
or has failed or when no pneumatic actuator
is mounted onto the valve (special version).
7.1 Working in automatic op-
eration
In automatic operation, the valve is moved
by the pneumatic signal. The side-mounted
handwheel is locked by the locking bolt to
prevent accidental adjustment of the valve
travel.
In automatic operation, the handwheel is in
the neutral position. The groove at the top
end of the threaded rod must be aligned
with the top of the guide tube (see Fig. 10).
Groove aligned with the
Operation
guide tube
31