Servicing - Samson 3275A Mounting And Operating Instructions

9 Servicing

The work described in this section is only to
be performed by personnel appropriately
qualified to carry out such tasks.
The following documents are also required
for servicing the valve:
− u AB 0100 for tools, tightening torques
and lubricant
DANGER
!
Risk of bursting due to incorrect opening of
pressurized equipment or components.
Pneumatic actuators are pressure equipment
that may burst when handled incorrectly.
Flying projectile fragments or components
can cause serious injury or even death.
Before working on the actuator:
Î Depressurize all plant sections concerned
and the actuator. Release any stored en‑
ergy.
WARNING WARNING
! !
Risk of personal injury due to exhaust air
being vented.
The actuator is operated with air. As a result,
air is vented during operation.
Î Wear eye and hearing protection when
working near the actuator.
EB 8314-1 EN
WARNING WARNING
! !
Crush hazard arising from the moving actu-
ator stem.
Î Do not insert hands or finger into the
yoke while the air supply is connected to
the actuator.
Î Before working on the actuator, discon‑
nect and lock the pneumatic air supply
as well as the control signal.
Î Do not impede the movement of the actu‑
ator stem by inserting objects into the
yoke.
WARNING
!
Risk of personal injury through incorrect
operation, use or installation as a result of
incorrect information on the actuator.
After any adjustment or conversion work, the
details on the actuator nameplate may no
longer be correct.
Î Immediately renew any nameplates or
labels with incorrect or outdated infor‑
mation.
Î Add any new values to the nameplate. If
necessary, contact SAMSON to obtain a
new nameplate.
NOTICE
!
Risk of actuator damage due to excessively
high or low tightening torques.
Observe the specified torques when tighten‑
ing actuator components. Excessive tighten‑
ing torques lead to parts wearing out more
quickly. Parts that are not tightened far
enough may loosen.
Servicing
9-1