TECHNICAL INFORMATION
Connection B - FORE-VACUUM PUMP
A flange KF 16 NW is available to connect the
Turbo-V 70 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 mechani-
cal pump must be eliminated through the use of
bellows.
NOTE
The Turbo-V 70 is characterized by its high com-
pression ratio also for oil vapors. When using a
mechanical oil-sealed pump, it is advisable to in-
stall a suitable trap between the turbopump and
the fore-vacuum pump in order to prevent oil back-
streaming.
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 K
Ω
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
Base fixing kit
969-9326
For a complete overview of Varian's extensive
product lines, please refer to the Varian catalog.
36
87-900-860-01(E)