Samson 3254, Монтаж и эксплуатация

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9-2 EB 8060 EN
Servicing
Î
Before working on the control valve,
disconnect and lock the pneumatic air
supply as well as the control signal.
Î
Do not impede the movement of the
actuator and plug stem by inserting
objects into the yoke.
Î
Before unblocking the actuator and plug
stem after they have 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
associated actuator documentation.
Risk of personal injury due to exhaust air
being vented.
While the valve is operating, air is vented
from the actuator, for example, during
closed-loop operation or when the valve
opens or closes.
Î
Wear eye protection when working in
close proximity to the control valve.
Risk of personal injury due to preloaded
springs.
Actuators with preloaded springs are under
tension. They can be identified by the long
bolts protruding from the bottom of the
actuator.
Î
Before starting any work on the actuator,
relieve the compression from the pre -
loaded springs (see associated actuator
documentation).
Risk of personal injury due to residual pro-
cess medium in the valve.
While working on the valve, residual me-
dium can flow out of the valve and, depend-
ing on its properties, cause personal injury,
e.g. (chemical) burns.
Î
Wear protective clothing, safety gloves,
respiratory protection and eye protec-
tion.
Risk of valve damage due to excessively
high or low tightening torques.
Observe the specified torques when tighten-
ing control valve components. Excessive
tightening torques lead to parts wearing out
more quickly. Parts that are too loose may
cause leakage.
Î
Observe the specified tightening torques
(
u
AB 0100).
Risk of valve damage due to the use of
unsuitable tools.
Î
Only use tools approved by SAMSON
(
u
AB 0100).
Risk of valve damage due to the use of
unsuitable lubricants.
Î
Only use lubricants approved by
SAMSON (
u
AB 0100).
WARNING ! WARNING !
WARNING !
WARNING ! WARNING !
NOTICE !
NOTICE !
NOTICE !