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Version 0 • Dokument-Nr. 74572811
Internet: www.gefa.com • E-Mail: [email protected]
6 Operation
CAUTION
Pipelines are under pressure
a) Before removing the valve make sure that the pipe section is depressurised and evacuated.
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In case of toxic, caustic and other outgasing media the pipe section must also be ventilated.
DANGER
There is an acute danger to life when opening a pressurized valve!
Opening of screw connenctions, limit switches, manual overrides or auxiliary equipment when the
valve is under pressure may result in eruption of the fluid and damage to the valve.
NOTICE
Opening a (pressurized) valve
Since the operator of the valve is responsible for a safety rating, it is important to observe and
comply with all local and company safety regulations. In addition, in order to ensure safe working
on a valve, at least all safety precautions listed below must be taken:
a) Make sure that the pipe section into which the valve has been integrated is depressurised and
drained
b) Let the valve and the flow medium cool down. If dangerous substances have flowed through
the relevant pipe section, it must be additionally rinsed and aerated.
c) Remove attached actuators before removing the valve or secure them against unauthorized
use and accidental operation.
WARNING
Hazardous media
Work on parts in contact with hazardous media may only be carried out with appropriate protective
equipment.
NOTICE
Inspection
In the case of dangerous fluids, the tightness must be checked regularly, especially against the at-
mosphere. If there are signs of leakage, these must be remedied immediately by resealing.
NOTICE
Usability of the valve
Valves that regularly remain in one position must be operated at regular intervals to ensure their
mobility.
The valve may only be operated by trained persons who know the operating instructions, understand them and
can work in accordance with.
