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Installation
5.3.2 Filling the plant
Open the shut-off valves slowly over a time
period of several minutes preferably starting
from the upstream pressure side to fill the
plant (all consumers are open).
Î Make sure that the pressure rises simulta-
neously upstream and downstream of the
regulator to avoid damaging the balanc-
ing bellows.
Î Avoid pressure surges.
5.4 Testing the regulator
DANGER
!
Risk of bursting due to incorrect opening of
pressurized equipment or components.
Regulators and pipelines are pressure equip-
ment that may burst when handled incor-
rectly. Flying projectile fragments or the re-
lease of process medium under pressure can
cause serious injury or even death.
Before working on the regulator:
Î Depressurize all plant sections concerned
and the regulator.
Î Disconnect the control line.
Î Drain the process medium from the plant
sections affected as well as from the
valve.
5-6
WARNING
!
Crush hazard arising from moving parts.
The regulator contains moving parts (actua-
tor and plug stem), which can injure hands
or fingers if inserted into the valve.
Î Do not insert hands or fingers between
the set point springs while the regulator
is in operation.
Î Before performing any work on the regu-
lator, depressurize the plant. Disconnect
or shut off the external control line.
WARNING
!
Risk of personal injury due to pressurized
components and as a result of process
medium being discharged.
Incorrect opening of pressure equipment or
mounting parts may lead to the process me-
dium escaping to the atmosphere.
Î Do not unscrew the control line while the
valve is pressurized.
Î Do not start up the regulator until all
parts have been mounted.
WARNING
!
Risk of hearing loss or deafness due to loud
noise.
Noise emission (e.g. cavitation) may occur
during operation caused by the process me-
dium and the operating conditions.
Î Wear hearing protection when working
near the valve. Follow the instructions
given by the plant operator.
EB 3124 EN
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