NSS Series
Nuvair
Page 22
www.Nuvair.com
WARNING
The active carbon filters are classified as special waste once the fill containment station has
been used to make air. They must be disposed of in compliance with the local antipollution
standards in force.
10.7 Changing Flex Hoses
The hoses must be changed periodically (every 5 years or every 3000 hours) or when they show signs of
abrasion/wear/damage. The bending radius of the hoses must not be less than 250 mm (9.8 in).
DANGER
Do not carry out these tasks if the fill containment station has just shut down and is hot; wait
for the fill containment station to cool. All maintenance work must be carried out with the fill
containment station OFF and the power supply lead unplugged from the wall socket.
DANGER
Depressurize the entire fill containment station circuit before carrying out any maintenance
tasks. To depressurize the fill containment station, open the drain valve (a,
Figure 6.
).
Tank refill pressure is extremely high. Therefore, before refilling the tanks check that hoses are correctly
connected and in good condition. Check also that the valves on any unused hoses are closed properly to
prevent the dangers associated with hose whipping.
To change the tank refill hoses, proceed as follows:
•
Disconnect the cylinder refill hoses by unscrewing the fittings (17 mm
wrench).
•
Replace the old hoses with new ones.
•
Screw the hoses onto the connectors (a, Figure 7).
•
Use a dynamometric wrench to tighten the hoses on the fill containment
station with a torque of 15 Nm.
WARNING
When the tanks are being refilled, unauthorized personnel must
remain at a distance of at least 3 meters (10 feet). It is strictly
forbidden to disconnect the hoses from the fittings or refill valve when the machine is under
pressure.
10.8 Dismantling and Putting the Fill Containment Station Out of Service
Should you decide not to use the fill containment station or any of its parts any longer you must precede with
its dismantling and putting it out of service. These tasks must be carried out in compliance with the standards
of your country or municipality.
WARNING
Should the fill containment station, or a part of it, be out of service its parts must be rendered
harmless so they do not cause any danger.
Figure 7. Tank refill hose
change.
