Thermo Scientific ISQ 7000 Hardware Manual page 121

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7. Open the front door of the instrument.
8. 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.
9. Wait five minutes for venting to complete.
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.
10. Use a T20 Torxhead screwdriver to loosen the top cover panel from the interior front
panel.
11. If you are using hydrogen, remove the remaining hydrogen safety screws.
Note You must move the GC or MS to access the right hydrogen safety screw.
12. Slide the top cover panel toward the back of the instrument and lift it off.
13. Remove the glass manifold cover from the top of the instrument.
Figure 91. Removing the Glass Manifold Cover
Manifold
Door
1
Performing Routine Maintenance
Replacing a Dual Filament
O-ring
Glass
Manifold
Cover
ISQ 7000 Hardware Manual 93