Installation; Mounting; Electrical Installation - Nederman TAV 50 Manual De Instrucciones

EN Vacuum Valve TAV 50
The nylon sealing rings supported by the backup rings seal off against the blade in the open
and closed positions. The backup rings are made of neoprene but are also available in viton for
extremely difficult applications.
5

Installation

5.1

Mounting

For wall mounting, positioning as per figure 5a is recommended. Flow direction is normally
upwards but reverse direction is also possible. Mounting shown in 5b is also possible but
positioning "up side down" (5c) should be avoided. Supplied support brackets should always be
used for wall mounting, see arrows in figure 5d.
CAUTION!
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.
Mounting in a type SA swing arm is made as shown in figure 5e using threaded holes in the
swing arm bracket. The support brackets should not be used in this case.
The compressed air pipe should be blown clean before connecting the valve, figure 6. New pipes
always contain dirt that can cause malfunction.
WARNING!
Use ear protection and safety goggles.
A compressed air filter should be installed if air quality is poor. A lubricator is not necessary but
may be installed in front of the TAV 50 FV if the air tool linked to it requires oiling.
5.2

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 50 housing is
made of conductive plastic material and must be properly grounded.
• Connected hoses or piping must be conductive and grounded to the TAV 50 studs (see
figure 7a–d).
• 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).
WARNING!
All wiring must be connected at the correct connection points (Phase, Neutral and
Ground). Do not connect mains (phase) to the solenoid ground.
18
Risk of equipment damage.
Risk of personal injury.
Risk of electric shock, overheating or possible fire.