EB 2517 EN 35
Start-up and operation
6.2 Starting up the plant
Î Start up the regulator after mounting all
parts. Make sure the control line is open
and correctly connected.
Î 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).
Î Fill the plant slowly with the process me-
dium. Avoid pressure surges.
Î 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
Tostartuptheexcesspressurevalve,open
shut-off valves slowly.
Î Formediumtemperaturesabove150°C,
rstllthecompensationchamberwith
the process medium.
6.2.2 Regulation of steam
Unscrewllerplug(19)onthecompensation
chamber (18). Use the included plastic fun-
nel or a jug to pour in water until it starts to
overow.Screwthellerplugbackinand
tighten it.
Î All pipes conveying the process medium
must be completely drained and dry.
Î Air and condensate must be allowed to
escape from the plant.
Î Allow time for the pipes and valves to
heat up.