Samson 3310 - 9 Service and Conversion Work

EB 8222-1 EN 9-1
Service and conversion work
9 Service and conversion work
The work described in this section is only to
be performed by personnel appropriately
qualied to carry out such tasks.
The following documents are also necessary
for servicing the valve:
− Mounting and operating instructions for
the mounted actuator, e.g. uEB8321
for the SAMSON Type3278 Pneumatic
Rotary Actuator
− uAB0100 for tools, tightening torques
and lubricant
Risk of bursting due to incorrect opening of
pressurized equipment or components.
Valves and pipelines are pressure equipment
that may burst when handled incorrectly.
Flying projectile fragments or the release of
process medium under pressure can cause
serious injury or even death.
Before working on the control valve:
Î Depressurize all plant sections affected
and the valve (including the actuator).
Release any stored energy.
Î Drain the process medium from all the
plant sections concerned as well as the
valve.
Risk of burn injuries due to hot or cold
components and pipeline.
Valve components and the pipeline may be-
come very hot or cold. Risk of burn injuries.
Î Allow components and pipelines to cool
down or warm up to the ambient tem-
perature.
Î Wear protective clothing and safety
gloves.
Risk of hearing loss or deafness due to loud
noise.
Noise emission (e.g. cavitation or ashing)
may occur during operation caused by the
process medium and the operating
conditions. Additionally, a loud noise may
briey occur through the sudden venting of
the pneumatic actuator or pneumatic valve
accessories not tted with noise-reducing
ttings. Both can damage hearing.
Î Wear hearing protection when working
near the valve.
Crush hazard arising from moving parts.
The valve's segmented ball turns in the valve
body which can lead to crush injuries to
hands or ngers if they are inserted into the
valve.
Î Do not insert hands or ngers into the
valve body.
Î Before working on the control valve,
release any energy (in the actuator)
which causes the valve shaft to move
(e.g. also the spring compression).
Î Before working on the control valve,
disconnect and lock the pneumatic air
supply as well as the control signal.
DANGER
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!