Agilent Technologies 8698933R001 Bedienungsanleitung Seite 268

17 Technical Information
Connection of the Fore-Vacuum Pump
Connection of the Fore-Vacuum Pump
A flange KF 40 NW is available to connect the TV 902 Navigator pump
to the fore-vacuum pump. A hose or vacuum approved pipe can be
used. If a rigid pipe is used, any vibration generated by the
mechanical pump must be eliminated through the use of bellows.
The TV 902 Navigator pump is characterized by its high compression ratio also
NOTE
for oil vapors. When using a mechanical oil-sealed pump, it is advisable to
install a suitable trap between the turbopump and the fore-vacuum pump in
order to prevent oil back-streaming.
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