Notes On Possible Severe Personal Injury; Notes On Possible Personal Injury - Samson 3277-5 Mounting And Operating Instructions

Safety instructions and measures

1.1 Notes on possible severe personal injury

DANGER
!
Risk of bursting in the actuator.
Actuators are pressurized. Improper opening can lead to actuator components burst-
ing.
Î Before starting any work on the actuator, depressurize all plant sections affected
and the actuator.

1.2 Notes on possible personal injury

WARNING
!
Crush hazard arising from moving parts.
The actuator contains moving parts (actuator stem), which can injure hands or fingers if
inserted into the actuator.
Î Do not touch the actuator stem or insert hands or finger into the yoke or beneath the
actuator stem while the air supply is connected to the actuator.
Î While working on the actuator, disconnect and lock the pneumatic air supply as well
as the control signal.
Î Do not impede the movement of the actuator stem by inserting objects into the yoke.
Î Before unblocking the actuator stem after it has become blocked (e.g. due to seizing
up after remaining in the same position for a long time), release any stored energy
in the actuator (e.g. spring compression). See 'Relieving the spring compression in
the actuator' in the 'Removal' section.
If not described otherwise in the valve documentation, the work position for the control valve is the
1)
front view looking onto the operating controls (including valve accessories).
1-4 EB 8310-1 EN