Connection B - Fore-Vacuum Pump - Agilent Technologies TV 551 Navigator Bedienungshandbuch

17 Technical Information
TV 551/701 Controller Installation
WARNING! It is mandatory to connect the pump in such a way to withstand the torque
specified in the "IN-STRUCTION FOR USE" section. Specifically pay attention
to clamp design, material of clamps and bolts and bolt fixing torque.
For ConFlat flange connections we recommend using Agilent
hardware.
To facilitate assembly and dismantling, apply Fel-pro C-100 high
temperature lubricant to the screw threads protruding from the
flange and between the nuts and flange.
Note that the connections can be made only with the bolt in the lower
side.
Attach the units and tighten each one in turn. Re-peat the sequential
tightening until the flange faces meet.
Exercise care when tightening nuts and bolts to avoid creating dents in the
CAUTION!
envelope as this may cause the pump rotor to lock.

Connection B - Fore-Vacuum Pump

A flange KF 25 NW is available to connect the Tur-bo-V551/701 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 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 backstreaming.
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