2/2
B 330
Nitrogen purge and air inlet valve
device connections
GB 02999 - Edition 05 - 03/2013
Installed on the pump exhaust,
the air inlet valve is calibrated to
reset the volume of the pump to
atmospheric pressure.
When the pump is isolated
(at inlet and exhaust) the rotor
slow down efficiency is increased.
If the venting time is set, the reset
to atmospheric pressure takes place
when the pump is stopped or when
faults are registered on the controller
(
Operating instructions of the
controller
).
Valve with built-in
purge device (50 sccm)
During pump operation, it’s possible to
stop the purge, i.e. for air tightness test
of the pump.
A nitrogen purge can be connected
instead of the dust filter (1/8 NPT
female).
Air inlet valve
A nitrogen purge can be connected instead of the dust filter
(1/8 NPT female).
Filtered air
or N
2
purge
A
Dust filter
When the inert gas purge is stopped, the pumped gases can pass from rough
vacuum side to high vacuum side and damage the maglev bearings.
It is advised to maintain the purge flow as long as the rotor is running to
protect pump internal parts.
Replace regularly the dust filter when used in dusty air.
A
Filtered air
or N
2
purge
Dust filter
adixen Vacuum Products - Operating Instructions - ATP 2300 M
