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17
Technical Information
Pump Description
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
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 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 must be supported on the
flange. The connection of the forevacuum on the side of the pump is a
KF16 flange.
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TV 401/301 MS User Manual / 87-901-013-01 (B)
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