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HEATER BAND INSTALLATION
The heater band model 969-9804 and 969-9803
can be used to heat the pump casing when a
bakeout is needed.
The heater band is applied to the upper part of the
pump casing, as shown in the figure, and heats it
to a temperature of about 80° C.
The heater band must be mounted such that there
is perfect thermal contact with the pump wall to ob-
tain fast and efficient heating.
Switch on the heater while the turbopump is in op-
eration. In the event of turbopump overheat, the
pump will be automatically cut out by the thermis-
tor sensor.
NOTE
The turbopump must be "baked" only when operat-
ing with an inlet pressure less than 10
with water cooling.
If the chamber of the system is "baked" at a high
temperature, a shield should be installed to pre-
vent thermal radiation heating the high vacuum
flange on the pump. The maximum temperature
allowed for the inlet flange is 120° C.
AIR COOLING KIT INSTALLATION
TV 301 with Navigator Controller
An air cooling kit (mod. 969-9299) is available to
improve the TV 301 cooling during heavy opera-
tional conditions (optional).
Fan specifications:
− air flow: 140 m
− input voltage: 24 Vdc
− dimensions: 119 x 119 x 32 mm
− power: 2.6 W
The fan bracket is shaped so that it can be
mounted close to the pump.
When the pump is supplied by the rack C.U. 969-
9437 or 969-9537 please utilize the special fan ex-
tension cable 969-9949.
-4
mbar and
82/90
TECHNICAL INFORMATION
!
CAUTION
3
/h
87-900-946-01(G)
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