Decommissioning - Samson 3730 Series Mounting And Operating Instructions

10 Decommissioning

The work described in this chapter is to be
performed only by personnel appropriately
qualified to carry out such tasks.
DANGER
!
Risk of fatal injury due to the ignition of an
explosive atmosphere.
Incorrect installation, operation or servicing
of the electropneumatic actuator in
potentially explosive atmospheres may lead
to ignition of the atmosphere and ultimately
to death.
Î The following regulations apply to instal-
lation in hazardous areas: EN 60079-14
(VDE 0165, Part 1).
Î Work is to be performed only by person-
nel who has undergone special training
or instructions or who is authorized to
work on explosion-protected devices in
hazardous areas.
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.
EB 8313-3 EN
WARNING
!
Risk of personal injury due to preloaded
springs.
Actuators with preloaded springs are under
tension. These actuators can be identified by
several longer bolts with nuts protruding
from the bottom diaphragm case. Actuators
with considerably preloaded springs are also
labeled correspondingly (see the 'Warnings
on the device' chapter).
Î Only open the actuator following the in-
structions in this document. See section
'Relieving the spring compression in the
actuator' in the 'Removal' chapter.
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.
WARNING WARNING
! !
Crush hazard arising from the moving
actuator 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.
Decommissioning
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