Samson 42-36 E - Start-Up and Putting the Device Back into Operation; Starting up the Plant

6-2 EB 3018 EN
Start-up
Risk of hearing loss or deafness due to loud
noise.
Noise emission (e.g. cavitation or ashing)
may occur during operation caused by the
process medium and the operating condi-
tions.
Î Wear hearing protection when working
near the valve.
Before start-up or putting the device back in-
to service, make sure the following condi-
tions are met:
− The regulator is properly installed into
the pipeline (see the 'Installation' sec-
tion).
− The leak and function tests have been
completed successfully (see the 'Testing
the regulator' section).
− The prevailing conditions in the plant
section concerned meet the regulator siz-
ing requirements (see information under
'Intended use' in the 'Safety instructions
and measures' section).
6.1 Start-up and putting the
device back into operation
1. Depending on the eld of application,
allow the regulator to cool down or
warm up to reach ambient temperature
before start up.
2. Slowly open the shut-off valves in the
pipeline. Slowly opening these valves
prevents a sudden surge in pressure and
WARNING
!
high ow velocities which can damage
the valve.
3. Check the regulator to ensure it functions
properly.
Before starting up the plant, make sure the
following conditions are met:
− The control line is open (needle valve)
and correctly connected.
6.2 Starting up the plant
1. Open the shut-off valves slowly prefera-
bly starting from the upstream pressure
side. Afterwards, open all the valves on
the consumer side (downstream of the
regulator).
2. Fill the plant slowly with the process me-
dium. Avoid pressure surges.
3. Make sure that the pressure rises simulta-
neously upstream and downstream of the
regulator to avoid damaging the balanc-
ing bellows.
The restriction (2.7) must be open while ll-
ing the plant.
Î Put the ow regulator into operation by
slowly opening the shut-off valves prefer-
ably starting from the return ow pipe.
Î Vent the bellows housing of valves bal-
anced by a bellows (DN125 and larger)
at the stopper (8) located at the side.
Note