Varian 4000 GCMS, Руководство по установке

Страница: 22 / 63

03-914998-55:6
22 of 63
The system should be conditioned for at least 10 - 24 hours, before proceeding
with meeting system specifications. Ideally, the system should be conditioned
overnight. Hydrocarbon and water background levels can be expected to
continue to decrease even after the initial bakeout. During conditioning, some
familiarization could be done with the operator.
NOTE: After bakeout, reset the manifold bakeout temperature to 80 °C and click
Save
. A manifold bakeout temperature of 110 °C is appropriate for the initial
bakeout that lowers the water level in the system. Additional bakeouts will likely
be done to lower the level of volatiles in the system and this can be achieved
with a manifold temperature of 80 °C. Repeated manifold bakeouts at higher
temperatures are to be avoided as they can potentially degrade system
performance.