Pump Description - Agilent Technologies TV 401/301 NSF Mode D'emploi

17 16BTechnical Information
145BDescription of the TV 401/301 NSF

Pump Description

The pump consists of a high frequency motor driving a turbine with
two pumping ports and 3 Macrotorr stages. The turbine rotates in an
anti-clockwise direction when viewed from the high vacuum flange
end. The turbine is made of high-strength aluminium alloy, machined
from a single block. The Macrotorr stages are in the form of 3 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 stator are made of stainless steel.
These are supported and accurately positioned by spacer rings. The
Macrotorr stators are in the form of self-positioning machined discs
with pumping channels and an opening restricted by the
corresponding rotor discs. These are made of aluminium alloy. The
nominal rotational speed is 60 krpm. The pump can be water cooled
or air cooled: in the first case the customer can use the dedicated
channels on the pump body, in the second case an external optional
fan is available. A thermistor sensor is mounted near the upper
bearing to prevent the pump from overheating. The pump can
operate in any position and can be supported on the high vacuum
flange. The connection of the forevacuum on the side of the pump is a
barb fitting of 1/2 inch (outer diameter).
Figure 4
240/290 TV 401/301 NSF User Manual / 87-900-963-01 (E)