Samson 41-73 Series, Mounting And Operating Instructions

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6-2 EB 2517 EN
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.
Before starting up the plant, make sure the
following conditions are met:
− The control line is open 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.
6.2.1 Regulation of liquids
Î
To start up the pressure regulator, open
shut-off valves
slowly .
Î
For liquid medium temperatures above
150 °C, first fill the compensation cham -
ber with the process medium. Proceed as
follows:
1. Unscrew filler plug from the compensa -
tion chamber.
2. Use the included plastic funnel or a jug
to pour in the process medium until it
starts to overflow.
3. Screw the filler plug back in and tighten
it.
6.2.2 Regulation of steam
1. Unscrew filler plug from the compensa -
tion chamber.
2. Use the included plastic funnel or a jug
to pour in water until it starts to overflow.
3. Screw the filler plug back in and tighten
it.
− All pipes conveying the process medium
must be completely drained and dry.
− Air and condensate must be allowed to
escape from the plant.
− Allow time for the pipes and valves to
heat up.