Agilent Technologies TV 551 Navigator, User Manual, Page: 315 / 328

Technical Information
TV 551/701 Controller Installation
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TV 551/701 Navigator User Manual / 87-900-934-01 (P) 315/328
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.
CAUTION!
Exercise care when tightening nuts and bolts to avoid creating dents in the
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.
NOTE
The Turbo-V551/701 pump is characterized by its high compression ratio 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.