Connection B - Fore-Vacuum Pump - Agilent Technologies TV 551 Notice De Mode D'emploi

17 Technical Information
TV 551/701 SEM Controller Installation

Connection B - FORE-VACUUM PUMP

A flange KF 25 NW is available to connect the Turbo-V551/701 SEM
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 Turbo-V551/701 SEM pump is characterized by its high compression ratio
NOTE
also 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 backstreaming.
264/276 TV 551/701 SEM Navigator User Manual / 87-900-958-01(G)