Coax Quadax Series Manuale di istruzioni per l'uso - Pagina 6
Sfoglia online o scarica il pdf Manuale di istruzioni per l'uso per Unità di controllo Coax Quadax Series. Coax Quadax Series 11. Butterfly valves with actuator
Stampa la paginaValves with actuator type "safety position OPEN"
The valve disc of short valves protrudes from the housing on both sides. The
transport of such valves is only permitted with disassembled actuator and
Attention
closed valve disc!
4 Installation in the pipeline
4.1 General
The same instructions apply to the installation of valves in a pipeline as for the connection of
pipes and similar piping elements. The following instructions additionally apply to valves.
For the transport to the installation site please also observe section 3 (above).
Butterfly valves – especially those with short face-to-face dimensions – must be
transported and installed with a closed valve disc. Otherwise the discs might be
damaged. Leak tightness may no longer be ensured.
Attention
Danger of crushing for non-installed butterfly valves:
The actuator may only be closed and activated once the butterfly valve has been
installed in the pipeline.
If the valve is intended to be used as an end flap, either the closing lid has to be
Attention
mounted at the outlet or the actuator must be securely shielded against
unauthorized operation, in order to prevent any risk of crushing.
The butterfly valve must be adjusted by the manufacturer for a sealed closed position:
In the closed position, the end stop of the valve/actuator unit must be in the base of
the butterfly valve. A stroke limitation in the actuator should either be reset or made
ineffective.
Note
The "CLOSED" position of the end stop may not be changed.
If – in an exceptional case – a valve has to be mounted without actuator:
It must be ensured that such a valve is not pressurized.
If an actuating unit is retrofitted, torque, direction of rotation, actuating angle and the
Danger -
setting of the end stops "OPEN" and "CLOSED" of the valve have to be adjusted to
Life
the operating conditions. It must be ensured that the valve is sealed in a clockwise
threatening
direction!
Non-observance of these instructions can endanger life and limb and may
cause damage to the pipe system.
Valves with electric actuator:
It must be ensured that the valve is shut off in the "Closed" position by the signal
of the torque switch. In the "Open" position, the valve must be shut off with the
Attention
signal of the limit switch .
For further information, please refer to the operating instructions for the electric actuator.
4.2 Working steps
Transport valve in the protective packaging to the installation site and unpack it only
there.
Inspect valve and actuator for any damages that may have occurred during transport.
Damaged valves or actuators may not be installed.
Ensure that only valves are installed with the pressure class, the connection type and
connection dimensions which meet the application requirements. Observe the type
plate on the valve. The connection data for the actuator has to correspond to the data
of the controls. Observe type plate on actuator.
No valve may be installed, whose permissible pressure/temperature range (= "rating")
is insufficient for operating conditions: This permitted range is described in the CO-AX
brochure <QUADAX butterfly valves> - see section 9 <Information>. For materials,
Danger -
pressures or temperatures that have not been specified in the above brochure,
Life
permissible pressures above room temperature must be released by the manufacture.
threatening
Version January 2011
Operating Instructions Quadax Series Butterfly Valves with Actuator
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