Agilent 6500 Series Q-TOF LC/MS Maintenance Guide 93
Maintenance 2
To replace the APCI nebulizer needle
Figure 37 Corroded needle in nebulizer
3 Loosen the locknut next to the zero-dead-volume (ZDV) union.
4 Remove the union from the nebulizer.
5 Loosen the locknut of the needle holder.
6 Unscrew the needle holder and pull it out of the nebulizer.
7 Slide the non-tapered end of the needle through the new needle holder from
the narrower side.
Figure 38 Sliding the non-tapered end of the needle through the new needle holder
8 Push a new ferrule, flat-side first, onto the needle.
9 Be sure the needle does not extend from the ferrule.
10 Reinstall the locknut and the union. Hand tighten the union.
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