3
Advanced Maintenance
Replacing Components of the Manifold
254
ISQ 7000 Hardware Manual
Thermo Scientific
Vent Valve Knob and O-Ring
To replace the vent valve knob and o-ring
1. Shut down your system by following the steps in
“Shutting Down the ISQ 7000 System”
.
2. Open the front door of the instrument.
3. 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. Wait five minutes
for venting to complete.
4. Remove and replace the vent valve knob and o-ring.
5. Tighten the vent valve. Be sure not to pinch the o-ring.
6. Close the front door of the instrument.
7. Restart your system by following the instructions in
Note
See the
ISQ and TSQ GC-MS Spare Parts Guide
for information about ordering
these components.
Note
You do not have to remove the ion source cartridge or the column. If you are using
hydrogen as a carrier gas, power off the GC.
Figure 266.
Replacing the Vent Valve Knob and O-ring
Note
If you have an ISQ 7000 without a VPI, the vent valve knob is located as seen in
.
Power Switch
Vacuum Interlock Shield
Vent Valve
Knob
Содержание ISQ 7000
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