Thermo Scientific ISQ 7000 Hardware Manual page 193

Restarting the System
Thermo Scientific
CAUTION Although the wires are insulated with glass braid, they may short through the
insulation if they touch a metal surface.
10. Align the manifold door with the ion source and screw it to the manifold.
Note For proper alignment and sensitivity, the front manifold door should be screwed
down fully to keep the magnet alignment with the ion source correct.
11. Install the CI and calibration tubes if they are not already installed.
a. Use 1/16 in. graphite-Vespel ferrules and tighten 1/2 turn past the position that just
begins to hold the tubing firm. Do not reuse graphite-Vespel ferrules more than three
times as they can become too compressed to re-tighten if a leak is found at their seal.
b. Replace the right side cover.
12. Install the column or no-hole ferrule.
13. Ensure the transfer line is positioned correctly in the GC oven.
14. Use the source plug and associated procedure to make sure column is placed at the edge of
the ion source.
15. Close the manifold door and reattach the four screws. Confirm that front door screws
hold door completely to the manifold.
16. Reconnect the four wires that connect the front 4-pin feedthrough to quadrupole 1 and
the ion guide.
17. Put the glass manifold covers back into place. Be sure to blow off all dust from the covers
and o-ring first.
18. Reconnect the electrometer board cable.
19. Reattach the top cover and tighten the top cover panel screw
1. Replace the front door screws or reattach the manifold door and the four screws.
2. Close the front door of the instrument.
3. Twist the vent valve knob clockwise to close the valve. Be sure not to pinch the vent valve
o-ring.
4. Reinsert the column to the proper length and tighten the transfer line nut.
5. If you are using hydrogen as a carrier gas, replace the front panel screw.
6. Replace the ion source cartridge. Replace all remaining hydrogen safety screws if you are
using hydrogen.
3
Advanced Maintenance
Replacing Components of the Analyzer
ISQ 7000 Hardware Manual 165