Nederman TAV 100, Руководство пользователя

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TAV 100/150 EN
16
7 Installation
Fit the valve ”in line” in the vacuum pipe (figure 6) or direct on the equipment
that it is to serve. Conducting joint sleeves for pipework are to be used.
CAUTION! Risk of equipment damage.
The valve must not bare the load of connection pipes or other connections
which may cause defects on the valve. Make sure the connections are firmly
installed against the wall, ceiling, floor or suchlike. Hose connections must be
strain reliefed.
The compressed air pipes must be blown clean before fitting the valve,
figure 11. New compressed air pipes always contain dirt, which could cause
operational disturbance. Wear ear protection and safety goggles. A moisture
and dirt trap must be installed if compressed air is of poor quality. An oil mist
lubricating device is not required.
7.1 Electrical installation
To ensure proper function and required level of protection with regards to the
equipment category, make sure that the following points are checked:
•
Electrical installation and connection of the magnetic valve must be done
by a certified electrician. A certified electrician must also pay attention to
the conditions for installations in zones classified according to ATEX.
•
Check that proper measures have been taken to avoid all types of
electrical stray currents to and/or from the piping system and electrical
wiring. Note that the TAV 100/150 housing must be properly grounded.
•
Connected hoses or piping must be conductive and grounded to the TAV
100/150 studs (see figure 12 - 15).
• Check that the correct voltage is connected to the solenoid of the
magnetic valve. Check the marking on the solenoid.
•
Electrical options, like micro switches, must be connected to an intrinsic
safe circuit (for options installed in ATEX classified zones).
7.2 Connections
WARNING!
Risk of personal injury.
•
Maximum recommended air pressure is 1 MPa (10 bars). A pressure
regulator must be installed if the pressure is likely to exceed the maximum
pressure. Recommended working pressure is 0,6-0,7 MPa (6-7 bars). Min.
pressure for a reliable function is 0.5 MPa (5 bars).
•
Compressed air hoses must be approved for the actual pressure and must
be securely fastened to the valve nipples. Hose clips must be fitted correctly.
•
The valve is designed for vacuum, ie, it should only be installed in systems
working with negative pressure compared to atmosphere.
Figures 6 - 8 explain how to connect TAV valves having different control
devices. A “flash arrow” indicates an electric supply. P indicates a compressed
air supply.
•
TAV 100/150 PC (figure 6) is not fitted with its own control device. It is
intended for direct control with a remote 3-port pilot valve (option).
• TAV 100/150 MA (figure 7) is controlled by a hand operated lever. It is
used when there is no need for automatic controlling.