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Installation and connection
Venting valve inert
gas connection
36
6
Vent
with inert gas – connect venting valve
Required connection material: hose for hose nozzle, e.g., sili-
cone tube 4/5 mm.
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.
In the case of ignitable substances and for processes
Ø
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.
20901118_EN-US_PC301x VARIO select Serie_V1.3_100720
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.
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