Start-Up And Putting The Device Back Into Operation; Starting Up The Plant When Gases And Liquids Are Controlled; Starting Up The Plant When Vapors Are Controlled - Samson 43-2 Mounting And Operating Instructions

Start-up
6.1 Start-up and putting the
device back into operation
1. Depending on the field 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
high flow velocities which can damage
the valve.
3. Check the regulator to ensure it functions
properly.
6.1.1 Starting up the plant
when gases and liquids
are controlled
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/plug.
4. To start up the regulator, open shut-off
valves slowly.
5. Check the adjusted temperature set point
at the thermometer installed near the
temperature sensor.
6-2
6.1.2 Starting up the plant
when vapors are
controlled
1. Completely drain and dry steam lines to
prevent water hammering.
2. Slowly allow the steam to enter the plant
to ensure that the pipes and valves warm
up evenly and to avoid excessive flow
velocities.
3. Before the full capacity is reached, drain
off the start-up condensate.
4. Make sure that the air contained in the
plant escapes as quickly as possible.
5. Open the shut-off valves slowly prefera-
bly starting from the upstream pressure
side.
6. Avoid pressure surges.
7. Check the adjusted temperature set point
at the thermometer installed near the
temperature sensor.
EB 2171 EN