3
Advanced Maintenance
Replacing Components of the Analyzer
Thermo Scientific
ISQ 7000 Hardware Manual
151
8. Open the front door of the instrument.
9. Look behind the right side of the vacuum interlock shield and twist the vent valve knob
one and a half times in a counter-clockwise direction to open the vent.
10. Wait five minutes for venting to complete.
11. Open the front door of the GC and loosen the transfer line nut. Then pull the column
back (into the oven) about 5 cm to ensure the column is no longer in the ion source.
12. Use a T20 Torxhead screwdriver to loosen the top cover panel from the interior front
panel.
13. If you are using hydrogen, remove the remaining hydrogen safety screws.
Removing the Analyzer Tray from the ISQ 7000 Instrument
To remove the analyzer tray from the ISQ 7000 Instrument
1. Slide the top cover panel toward the back of the instrument and lift it off.
Note
If you have a ISQ 7000 system with no VPI, the vent valve knob is in the same
location as shown in
CAUTION - INSTRUMENT DAMAGE
Do not proceed until the instrument is vented, or
pieces of the column or ferrule might blow into the instrument. To ensure that the
instrument is vented, check how much the glass cover compresses the top cover o-ring in
the manifold. Once the o-ring surface touching the glass is about 1 mm, it is safe to open
the instrument and remove the column.
ATTENTION DOMMAGES À L’INSTRUMENT
Ne pas poursuivre tant que l’instrument n’a
pas été ventilé, ou des morceaux de la colonne ou de la virole pourraient éclater dans
l’instrument. Pour vous assurer que l’instrument est ventilé, vérifiez dans quelle mesure le
couvercle en verre comprime le joint torique du couvercle supérieur dans le collecteur.
Lorsque la surface du joint torique en contact avec le verre équivaut à environ 1 mm, vous
pouvez sans danger ouvrir l’instrument et enlever la colonne.
Note
You must move the GC or MS to access the right hydrogen safety screw.
Содержание ISQ 7000
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Страница 174: ...2 Troubleshooting Contacting Technical Support 146 ISQ 7000 Hardware Manual Thermo Scientific ...
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