Pump Description - Agilent Technologies Turbo-V 850 TwisTorr Bedienungshandbuch

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Technical Information
Description of the Turbo-V 750/850 TwisTorr
Figure 15 Model 969-6019
The pumps must be driven with the dedicated rack controller
(models: 969-9525, 969-9526).

Pump Description

The Turbo-V 750/850 TwisTorr pump consists of a high frequency
motor driving a turbine fitted with 5 bladed stages and 2 TwisTorr
drag stages. The turbine rotates in an anticlockwise direction when
viewed from the high vacuum flange end.
The turbine is made of high-strength aluminium alloy, machined from
a single block. The TwisTorr stages are in the form of three discs.
The turbine rotor is supported by permanently lubricated high
precision ceramic ball bearings installed on the forevacuum side of
the pump.
The static blades of the stators are made of stainless steel or
aluminium alloy. These are supported and accurately positioned by
spacer rings.
The TwisTorr stators are in the form of selfpositioning machined
discs. On each disc there are parallel spiral pumping channels
designed to pump in centrifugal direction on one side and in
centripetal directions on the other side. These are made of
aluminium alloy.
Turbo-V 750/850 TwisTorr User Manual / 87-901-020-01 (A) 313/406