TECHNICAL INFORMATION
Connection B - FORE-VACUUM PUMP
A flange KF 16 NW is available to connect the
Turbo-V 70LP 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 me-
chanical pump must be eliminated through the use
of bellows.
NOTE
The Turbo-V 70LP 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.
Connection C - ELECTRICAL
The turbopump is connected to the controller
through an 6-pin connector. Pins B, C and D are
the 3-phase supply to the motor, pins A and F are
connected to the temperature sensor (NTC type,
30 KΩ resistance at 25° C) and pin E is connected
to the pump ground.
If the temperature sensor is disconnected, the
pump will not start. To prevent damage to the
pump when the temperature exceeds 60° C, the
sensor automatically cuts out the power supply.
ACCESSORIES
DESCRIPTION PART NUMBER
Inlet screen DN40 969-9309
Inlet screen DN63 969-9300
Heather band, 120 V 969-9802
Heather band, 220 V 969-9801
Water cooling kit 969-9337
Plastic water cooling kit 969-9347
Air cooling kit 969-9310
Vibration damper, DN 63 ISO 969-9340
Vent valve NW 10 KF 969-9109
Vent valve with fixed delay time 969-9833
Vent valve with adjustable delay time 969-9831
Forepump SD 40, with 1 phase uni-
versal motor
P1111-307
Forepump MD 6, 120 V 969-9421
Forepump MD 6, 220 V 969-9422
Base fixing kit 969-9326
For a complete overview of Varian's extensive
product lines, please refer to the Varian catalog.
36 87-900-862-01(E)
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