Samson 3351 - Page 52

10-2 EB 8039 EN
Decommissioning
Risk of personal injury due to residual pro-
cess medium in the valve.
While working on the valve, residual
medium can ow out of the valve and,
depending on its properties, cause personal
injury, e.g. (chemical) burns.
Î 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owing
through the valve.
2. Completelydrainthepipelinesand
valve.
3. Disconnect and lock the pneumatic air
supplytodepressurizetheactuator.
4. Release any stored energy.
5. If necessary, allow the pipeline and valve
components to cool down or warm up to
the ambient temperature.
WARNING
!
WARNING
!