Specifications

CI Maintenance 5
5975 Series MSD Troubleshooting and Maintenance Manual 169
To Refill the CI Calibrant Vial
Materials needed
• PFDTD calibrant (8500-8510)
Procedure
1 Set the reagent gas flow to Gas Off.
2 Vent the MSD.
3 Remove the capillary column from the GC/MSD interface.
4 Pull the MSD away from the GC to expose the calibration vial and valve.
See page 103.
5 Loosen the collar holding the calibration vial in place. Do not remove the
collar.
6 Remove the calibrant vial. See Figure 33.
7 Fill the vial no higher than the bottom of the internal tube with fresh
PFDTD calibrant (8500-8510).
8 Replace the vial and tighten the collar.
9 Reposition the MSD next to the GC. See page 105.
10 Reinstall the capillary column.
11 Pump down the MSD.
12 Purge the calibration valve. See page 111.

CAUTION
Do not rinse the vial with any solvents. Never expose the inside of the vial to
chlorinated solvents or isopropyl alcohol or water — this will result in severe loss of CI
sensitivity.
CAUTION
After removing the calibrant vial, you must purge the calibration valve. Failure to do so
will result in severe contamination of the ion source and damage to the filament and
electron multiplier.