Waters GCT Premier Operator's Manual page 182

4. Fasten the two clips at each side of the FI/FD inner source probe.
Caution:
retracted position when not in use. Remove the probe from the
instrument.
5. Ensure that the vent valve is closed (fully clockwise).
6. Press the VAC button on the right side of the instrument.
See also:
7. Wait until the green light in the center of the pump probe switch
illuminates.
Tip: On the MassLynx Tune window, click Vacuum > Monitor to display
the vacuum levels. You should see the Backing pressure rise and then
fall into the green region as the probe insertion lock is pumped out.
8. Click
9. Open the source isolation valve.
10. Pull out the retaining stopper.
11. Push the FI/FD inner source probe into the outer source.
12. Adjust the micrometer until the emitter is centered between the two
extraction rods.
Caution:
rods or the GC-FI column. You can view the position of the
emitter through the outer source viewing port.
9-12 FI/FD Operation
Do not leave the FI/FD inner source probe in the
Figure titled "Probe insertion lock:" on page
, to switch the instrument into Standby.
Ensure that the emitter does not touch the extraction
7-3.