15
Operation
Venting
Manually Venting
Open the venting screw (included) in the venting connection of the turbopump
about one turn.
Venting with Pfeiffer Vacuum Venting Valve
Enable venting via the functions of the electronic drive unit.
Settings are possible via the RS485 by using DCU, HPU or PC.
1)
When mains power is restored the venting procedure is aborted.
Basic information for the rapid venting
Venting of the vacuum chamber in two steps. Ask for details on individual solutions
from Pfeiffer Vacuum.
Vent for 20 seconds at a rate of pressure rise of max. 15 mbar/s.
– The valve cross section for the venting rate of 15 mbar/s must be adapted to
the size of the vacuum chamber.
– For small vacuum chambers, use the Pfeiffer Vacuum venting valve.
Then vent with an additional venting valve of any desired size.
Venting rotation speed
Switch off the pumping station Mains power failure
1)
50% of the nominal rotation
speed
Venting valve opens for 3600 s (1 h,
works setting)
Venting valve opens for
3600 s (1 h, works setting)
