92 Agilent 6500 Series Q-TOF LC/MS Maintenance Guide
2Maintenance
To replace the APCI nebulizer needle
To replace the APCI nebulizer needle
When required When the needle is plugged. Common symptoms of a plugged needle are
increased LC back pressure or off-axis spray from the nebulizer (difficult to
see in an APCI system).
Tools required • Adjustment fixture (p/n G1946-20215)
• Gloves, clean, lint-free (large, p/n 8650-0030; small, p/n 8650-0029)
• Pliers, long-nose (p/n 8710-0004)
• Wrench 3-mm, open-end (p/n G1946-20203)
• Wrench ¼-inch x 5/16-inch, 2 required (p/n 8710-0510)
Parts required Nebulizer needle kit, APCI (includes needle, ferrule, and needle holder, p/n
G2428A).
1 Install the nebulizer in the adjustment fixture.
Figure 36 Installing the nebulizer in the adjustment fixture
2 Examine the needle for signs of wear or corrosion. If the needle appears
corroded or damaged, continue to the next step.
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