Thermo Scientific TSQ 8000 Evo Hardware Manual page 134

3
Advanced Troubleshooting
Replacing Components of the Analyzer
108 TSQ 8000 Evo Hardware Manual
.
Figure 71. Powering Off the TSQ 8000 Evo Instrument
Top Cover Panel
Screw
Hydrogen Safety Screw
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 the TSQ 8000 Evo instrument to vent.
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.
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.
13. If you are using hydrogen, remove the remaining hydrogen safety screws.
Note You might have to move the GC to access the right hydrogen safety screw.
Vacuum Interlock Shield
Vent Valve Knob
Power Switch
Hydrogen Safety Screws
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