download/files/LCQ Deca_Duo Hardware Troubleshooting_8601.pdf
download/files/LCQ Deca_Duo Hardware Troubleshooting_8601.pdf
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