Start-Up And Putting The Device Back Into Operation; Starting Up The Plant - Samson 2479 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.
Before starting up the plant, make sure the
following conditions are met:
Î The control line is connected correctly.
6-2

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 plug.
Note
On filling the plant, make sure the restriction
(1.2) is open by turning the set point screw
(12) counterclockwise () as far as it will go.
4. Put the regulator into operation by slow-
ly opening the shut-off valves preferably
starting from the return flow pipe.
5. Check the adjusted temperature set point
at the thermometer installed near the
temperature sensor.
EB 3132-3 EN