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download/files/LCQ Deca_Duo Hardware Troubleshooting_8601.pdf

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<strong>Troubleshooting</strong> the APCI Probe<br />

◗ Spray voltage erratic: Spray current should not exceed 20µA<br />

Once 20µA level is reached, the spray<br />

voltage will be lowered to compensate<br />

for the 20µA threshold<br />

◗ Spray current too high: Problematic mixture of solvents/sample/etc.<br />

◗ Contamination: Bake out the probe for 10-60 minutes at 50ºC<br />

above desired Vaporizer Temperature<br />

◗ Lack of sensitivity: Make sure the corona needle is seated<br />

and is not deformed

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