Agilent Technologies TV 551 Navigator User Manual page 300

17 Technical Information
Heater band installation
Switch on the heater while the turbopump is in operation. 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
NOTE
less than 10-4 mbar and with water cooling.
If the chamber of the system is "baked" at a high temperature, a shield should
CAUTION!
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.
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