Samson 3222/5757 - Manual (Page 15)

7 Maintenance
The control valve is subject to natural wear.
Depending on the conditions the valve is op-
erated in, it needs to be checked at regular
intervals.
If leakage to the atmosphere occurs, remove
the valve from the pipeline and replace the
damaged parts.
Warning!
For maintenance work on the valve,
make sure the relevant section of the
pipeline is depressurized and,
depending on the process medium,
drained as well.
For high medium temperatures, allow
the section of the pipeline to cool down
before you start.
Make sure the control signal for the
actuator is switched off.
EB 5766 EN
15
Maintenance