Samson 3351 - Operation; Normal Operation; Manual Operation

EB 8039 EN 7-1
Operation
7 Operation
Immediately after completing start-up or put-
ting the valve back into operation, the valve
is ready for use.
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 personal injury due to pressurized
components and process medium being
discharged.
Î Do not loosen the screw of the test con-
nection while the valve is pressurized.
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.
Risk of personal injury due to exhaust air
being vented.
While the valve is operating, air is vented
from the actuator, e.g. during closed-loop
operation or when the valve opens or closes.
Î Wear eye protection when working in
close proximity to the control valve.
7.1 Normal operation
Thehandwheelofvalveswithactuatorstted
with a handwheel must be in the neutral po-
sition during normal operation.
7.2 Manual operation
Valveswithactuatorsttedwithahandwheel
can be manually closed or opened in the
event of failure of the auxiliary energy sup-
ply.
WARNING
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WARNING
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WARNING
!
WARNING
!
WARNING
!