3.7 Connecting the purge gas and venting device
See Section 4.1 for suited gases, see Section 4.5 for different venting meth-
ods.
TURBOVAC 151 C, 361 C, 600 C, 1000 C and 1100 C
Either attach a power failure venting valve to the venting connection flange or
a purge gas and venting valve at the purge gas connection flange.
Which of the two flanges is used will depend on the process.
When pumping clean, non-corrosive gases, a power failure venting valve is to
be attached.
When pumping reactive media, connect a purge gas and venting valve.
When operating the pump with purge gas, the pump needs to be vented via
the purge gas valve after having shut down the pump.
Observe the Operating Instructions for the purge gas and venting valve.
Consider the additional purge gas flow when selecting a suitable backing
pump.
We recommend a purge gas flow (with Nitrogen) of
■
0,4 mbar·l/s (24 sccm) for the TURBOVAC 151 C and 361 C and
■
0,6 mbar·l/s (36 sccm) for the TURBOVAC 600 C, 1000 C and 1100 C.
The pressure in the pump must not exceed 1400 mbar (0.4 bar over-
pressure). Observe Safety Informations 0.1.2 to 0.1.5.
WARNING
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