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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 thermistor
sensor.
NOTE
The turbopump must be "baked" only when operat-
ing with an inlet pressure less than 10
with water cooling.
! ! ! !
CAUTION
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.
WATER COOLING KIT INSTALLATION
Two types of water cooling kits are available to be
mounted when the pump is used under heavy load
conditions or when air cooling is insufficient.
The two model part numbers are: 969-9337 (metal-
lic model), and 969-9347 (plastic model).
The items of the plastic model kit must be assem-
bled as shown in the following figure
-4
mbar and
The assembled kit must be screwed into the suit-
able holes of the pump body with a recommended
closing torque of 5 Nm.
29
TECHNICAL INFORMATION
Model 969-9337
Model 969-9347
! ! ! !
CAUTION
87-900-875-01(C)
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