128 5977B Series MSD Troubleshooting and Maintenance Manual
4 General Maintenance
To Refill the EI Calibration Vial
Materials needed
• PFTBA (05971-60571)
Procedure
1 Stop any tuning or data acquisition.
2 Turn off the analyzer.
3 If your MSD is equipped with a vacuum gauge, turn off the gauge.
4 Remove the analyzer window cover.
5 Loosen the calibration vial collar. (See Figure 18.) Do not remove the
collar.
6 Pull the calibration vial out. You may feel some resistance due to residual
vacuum.
7 Syringe or pipette PFTBA into the vial. With the vial vertical, the liquid
should be just below the end of the internal tube, approximately 70 µL of
sample.
8 Push the calibration vial into the valve as far as possible.
Figure 18 Removing the EI calibration vial
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