Installation and connection
36
20901118_EN-US_PC301x VARIO select Serie_V1.3_100720
Vent
6
with inert gas – connect venting valve
Required connection material: hose for hose nozzle, e.g., sili-
cone tube 4/5 mm.
Venting valve inert
gas connection
ð
Push hose
(c)
onto the connection of
venting valve
(b)
and connect inert
gas (max. 1.2 bar/900 Torr, abs.).
R
Venting valve with hose for vent-
ing with inert gas.
4.4.5 Gas ballast (GB)
Use ambient air as gas ballast
DANGER
Risk of explosion from air as gas ballast.
By using air as gas ballast, small amounts of oxygen
get inside the vacuum pump. Depending on the
process, the oxygen in the air can form an explosive
mixture or other dangerous situations can arise.
Ø
In the case of ignitable substances and for processes
in which an explosive mixture can arise, only use in-
ert gas as gas ballast, e.g. nitrogen (max. 1.2 bar /
900 Torr abs.).
6 Avoid overpressure.
