Replacing A Dual Filament - Thermo Scientific TSQ 9000 Hardware Manual

1
Performing Routine Maintenance

Replacing a Dual Filament

Replacing a Dual Filament
72 TSQ 9000 Hardware Manual
The number of ions produced in the ion source is proportional to the filament emission
current. If the measured emission current is substantially less than the set emission current
value, or if the measured emission current is decreasing, you may need to replace the dual
filament because it has failed or is failing. Also, if one of the filaments has burned out, it may
be time to replace it.
Note See the ISQ and TSQ GC-MS Spare Parts Guide for information about ordering a
new filament.
You can increase the life of your dual filament by:
• Setting the solvent delay so that the analyzer will not turn on while the solvent peak is
eluting.
• Not overriding the solvent delay at the beginning of a run.
• Selecting a lower emission current.
Note Click the Instrument Control button in the Xcalibur Status panel to switch
between filaments A and B.
To replace the dual filament:
7. Open the TSQ 9000 Dashboard and click the Shut Down button.
WARNING BURN HAZARD: The injector, oven, and transfer line may be hot. Allow them
to cool to room temperature before touching them.
AVERTISSEMENT RISQUE DE BRÛLURE : l'injecteur, le four et la ligne de transfert
peuvent être chauds. Laissez-les refroidir à la température ambiante avant de les toucher.
WARNING FIRE HAZARD: If you are using hydrogen as a carrier gas, you must cool down
and shut off the GC to prevent the buildup of hydrogen in the vacuum manifold.
AVERTISSEMENT RISQUE D'INCENDIE : si vous utilisez de l'hydrogène comme gaz vecteur,
vous devez refroidir et mettre hors tension le CG pour éviter l'accumulation d'hydrogène
dans le collecteur à vide.
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