Samson 3349, Монтаж и эксплуатация

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6-2 EB 8048-2 EN
Start-up
Risk of personal injury due to process me-
dium escaping.
Î
Align the pipe elbow to ensure that any
escaping process medium does not hit
operating personnel.
Î
Wear protective clothing (eye protection,
safety gloves) when working in close
proximity to the control valve.
Risk of impairment of aseptic or hygienic
service.
In the version with backup packing, the test
connection is sealed by a stopper.
Î
To guarantee aseptic or hygienic service,
connect a leakage detection device to the
test connection.
Diaphragm damage through the use of an
incompressible medium.
Closing the valve when the shut-off valves
upstream and downstream of the valve are
closed may lead to the diaphragm rupturing
in plants with liquid media flowing through
them.
Î
Only close the valve when the shut-off
valves upstream and downstream of the
valve are open.
Before start-up or putting the valve back into
service, make sure the following conditions
are met:
− The valve is properly installed into the
pipeline (see the 'Installation' section).
− The leak and function tests have been
completed successfully (see 'Testing the
installed valve' in the 'Installation' sec-
tion).
− The prevailing conditions in the plant
section concerned meet the valve sizing
requirements (see information under 'In-
tended use' in the 'Safety instructions
and measures' section).
Start-up/putting the valve back into opera -
tion
1. Allow the valve to cool down or warm up
to reach ambient temperature before
start-up when the ambient temperature
and process medium temperature differ
greatly or the medium properties require
such a measure.
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 valve to ensure it functions
properly.
WARNING !
NOTICE !
NOTICE !