Agilent Technologies 7250 Troubleshooting And Maintenance Manual page 74

4 General Maintenance
6 Syringe or pipette PFTBA into the vial. With the vial vertical, the liquid should
7 Push the calibration vial into the valve as far as possible.
8 Withdraw the vial 1 mm. This prevents damage when you tighten the collar.
9 Turn the collar clockwise to tighten it. The collar should be snug but not
10 Reinstall the source window cover.
After removing a calibrant vial, you must purge the calibration valve. Failure to
C AU T I O N
do so will result in damage to the filament, microchannel plate, and the
photomultiplier.
11 In the Instrument Control panel, select the MS Tune icon to display the
12 Turn off the Emission by selecting the check box.
13 Purge the calibration valve by selecting the EI Cal Valve check box to open
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be just below the end of the internal tube, approximately 70-120 µL of
sample.
overly tight. Do not use a tool to tighten the collar. It does not require that
much force.
GC-Q-TOF Tune dialog box. Select the Manual Tune tab then select the Ion
Source tab to display the ion source parameters.
the calibration valve. Close the EI Cal Valve after 30 seconds.
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual