100 Agilent 6500 Series Q-TOF LC/MS Maintenance Guide
2Maintenance
To replace the corona needle
To replace the corona needle
When required When symptoms indicate poor corona needle performance and cleaning the
needle does not restore performance.
Tools required • Cloths, clean, lint-free (p/n 05980-60051)
• Gloves, clean
• Isopropanol, reagent grade or better
Parts required Corona needle (p/n G2429A)
1 Pull the corona needle assembly out of the spray chamber.
2 Unscrew the needle collar from the corona needle shaft.
Figure 45 Unscrew the corona needle from the shaft.
Do not hit the tip of the needle as you insert the nebulizer. The tip of the needle is easily
damaged.
If this procedure fails to restore system performance, replace the corona needle.
The needle and related parts get very hot during operation. Make sure they have
cooled before proceeding.
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