TECHNICAL INFORMATION
36
87-900-851-01(A)
Connection B - FORE-VACUUM PUMP
ACCESSORIES
DESCRIPTION PART
NUMBER
Inlet screen DN100
969-9302
Heather band, 120 V
969-9804
Heather band, 220 V
969-9803
Base fixing kit
969-9326
Water cooling kit
969-9319
Air cooling kit (small)
969-9310
Air cooling kit (large)
969-9313
Vibration isolator ISO 100
969-9342
Vibration isolator 6” CFF
969-9332
Centering ring ISO 100
(with O-ring)
IC-100 SV
ISO clamp
IC-063-100-A
Copper gaskets for 6” CFF
(10-Pack)
FG-0600-CI
Nut and bolt set for 6” CFF
(25-Pack)
FB-0450-C12
Vent valve with fixed delay time
969-9833
Vent valve with adjustable delay
time
969-9831
Vent flange NW 10 KF
969-9109
Thread lubricant Fel-pro C-100
953-0031
Forepump SD 40, 120 V, 50-60 Hz
0418-P1111-301
Forepump SD 40, 220 V, 50 Hz
949-0785-830
Forepump MDP 30, 120 V
949-9451
Forepump MDP 30, 220 V
949-9452
A flange KF 16 NW is available to connect the
Turbo-V 250 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 mechanical
pump must be eliminated through the use of bel-
lows.
NOTE
The Turbo-V 250 is characterised 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
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 K
Ω
resistance at 25° C) and pin E is connected
to the pump earth.
For a complete overview of Varian's extensive
product lines, please refer to the Varian catalog.
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.
