Agilent Technologies G1960-67470, Руководство пользователя, Страница: 10 / 16

To adjust or replace the nebulizer needle
10 Nebulizer Adjustment Fixture User Guide
If the needle is pushed in too far, when the union is installed and the
ferrule is compressed, the HPLC flow is restricted or blocked, which
results in poor or no spray from the nebulizer.
h Reinstall the locknut and the union. Hand-tighten the union.
i Hold the needle holder steady with a 3-mm open-end wrench or ¼-inch x
5/16-inch open-end wrench , depending on your nebulizer holder style.
j Tighten the union one-half to three quarters of a turn, or until an audible
squeak is heard.
The ferrule is now compressed.
8 Use a ¼-inch x 5/16-inch open-end wrench to adjust the top of the needle to
the proper distance from the end of the nozzle. See Table 2 .
9 Tighten the lock nut and verify adjustment while you view the nebulizer tip
through the magnifier.
See Figure 7 and Figure 8 for images of correctly adjusted nebulizer needles.
Table 2 Recommended Needle adjustment Distance
Nebulizer Distance
Microflow Nebulizer Assembly 0.003 inch
ES Tested Nebulizer 0.000 (flush)
Tested ESI Nebulizer Assembly 0.003 inch
Tested APCI Nebulizer Assembly 0.000 (flush)