Samson EB 8111 EN, Монтаж и эксплуатация

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10-2 EB 8111/8112 EN
Decommissioning
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Do not impede the movement of the actu-
ator and plug stem by inserting objects
into the yoke.
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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 from pneumatically operated
components.
While the valve is operating, the actuator or
valve accessories may vent during closed-
loop control 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 residual pro-
cess medium in the valve.
While working on the valve, residual process
medium can escape and, depending on its
properties, may lead to personal injury, e.g.
(chemical) burns.
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Wear protective clothing, safety gloves,
respiratory protection and eye protec-
tion.
To decommission the control valve for service
work or to remove it from the pipeline, pro-
ceed as follows:
1. Close the shut-off valves upstream and
downstream of the control valve to stop
the process medium from flowing
through the valve.
2. Completely drain the pipelines and
valve.
3. Disconnect and lock the pneumatic air
supply or supply voltage to depressurize
or de-energize the actuator.
4. Release any stored energy.
5. If necessary, allow the pipeline and valve
components to cool down or heat up.
WARNING ! WARNING !
WARNING ! WARNING !