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Technical Information
TV 551/701 SEM Controller Installation
264/276
TV 551/701 SEM Navigator User Manual / 87-900-958-01(G
)
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.
NOTE
The Turbo-V551/701 SEM 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.
Содержание 969-8935
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