Samson 3286, Монтаж и эксплуатация

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30 EB 8257 EN
Mounting and start-up
5.3 Putting the control valve
into operation
1. Depending on the field of application,
allow the valve to cool down or heat up
to reach ambient temperature before
start up.
2. Set the controller (2) to 'manual' to en -
sure that the plant can slowly warm up
by slightly opening the steam condition-
er.
3. Set the controller (3) for the water supply
to 'automatic' to ensure it can react
quickly to changes at the temperature
sensor of the transmitter.
4. Slowly open the shut-off valve in the
pipeline after the valve has been in-
stalled.
Risk of valve damage due to a sudden pres -
sure increase and resulting high flow veloci -
ties.
Slowly open the shut‑off valve in the pipeline
during start‑up.
5. Check the valve to ensure it functions
properly.
5.4 Quick check
SAMSON valves are delivered ready for
use. To test the valve's ability to function, the
following quick checks can be performed:
Leakage
1. Close the valve.
2.
Slowly open the shut-off valve in the
pipeline.
Risk of valve damage due to a sudden pres -
sure increase and resulting high flow veloci -
ties.
Slowly open the shut‑off valve in the pipeline
during start‑up.
3. Check the valve for leakage (visual in -
spection).
Travel motion
The movement of the actuator stem must be
linear and smooth.
Î
Open and close the valve, observing the
movement of the actuator stem.
Î
Apply the maximum and minimum con-
trol signals to check the end positions of
the valve.
Î
Check the travel reading at the travel in -
dicator scale.
NOTICE
!
NOTICE
!