HG1
5 Mounting and initial operation
Before installing and initial operation of the valve, the customer is obliged to check the completeness and cor-
rectness of the scope of delivery. In particular, the suitability of the materials and the operating parameters such
as nominal diameter, pressure rating, medium, operating temperatures and, if applicable, control characteristics
should be verified with the intended operating conditions and the ambient conditions (piping system). If you
have ordered additional parts or a customized valve, please check the details carefully.
WARNING
damaged / incomplete valve
Damaged or incomplete valves no longer meet the safety requirements and must not be installed.
WARNING
Hazardous media
Work on parts in contact with hazardous media may only be carried out with appropriate protective
equipment.
CAUTION
Earthing the valve
If the valve is supplied with anti-static device and used in potentially explosive zones, the body of
the valve must be connected effectively at site with the potential compensation cable before the
valve is put into operation.
NOTICE
Avoid vibration
Vibrations, water hammer and cavitation as well as abrasive media components lead to damage to
the valve and impair the service life.
NOTICE
Installation at high suspended matter concentrations
If the concentration of suspended matter is high (e.g. media which are very viscous), it is recom-
mended to mount the high performance butterfly valve with valve shaft in horizontal position and
stop boss facing upwards.
NOTICE
Approach end position „open”!
The end position is always approached from the open position. This is the only way to ensure that
any clearance from the drive (eg gearbox) that is possibly present has no influence on the end pos-
ition. If the exact end position is exceeded, bring the valve back into the open or partly open posi-
tion. Then approach the end position again from the open position.
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Version 0 • Dokument-Nr. 74572811
Internet: www.gefa.com • E-Mail: [email protected]
