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HEATER BAND INSTALLATION
The heater band model 969-9808 and 969-9807
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 thermistor
sensor.
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 prevent
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 551/701 with Navigator Controller
An air cooling kit (mod. 969-9339) is available to
improve the TV 551/701 cooling during heavy op-
erational conditions (optional).
Fan specifications:
3
− air flow: 200m
− input voltage: 24 Vdc
− dimensions: 127 x 127 x 38 mm (5 x 5 x 1.5 in.)
− power: 4.7 W
The fan bracket is shaped so that it can be
mounted close to the pump.
38
TECHNICAL INFORMATION
NOTE
-4
mbar and
CAUTION
/h
87-900-934-01(B)
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