Agilent Technologies 7890 Series Troubleshooting

ALS and Detector Symptoms 2
Agilent 7890 Series Troubleshooting 31
FID Ignitor Does Not Glow During Ignition Sequence
1 Remove the detector top cover.
2 Turn the FID flame On.
3 Observe the ignitor plug though the FID chimney. The small
hole should glow during ignition sequence.
If the test fails, check for the following possible causes:
• The ignitor may be bad; replace the ignitor. (See To Perform
Maintenance on the FID Collector Assembly.)
• Detector temperature is set to < 150 °C. Agilent recommends
operating the FID at > 300 °C.
• The ignitor is not making a good connection to the ground:
• The ignitor must be tightly screwed into the FID castle
assembly.
• The three T-20 Torx screws that hold the collector
assembly in place must be tight.
WARNING
Keep body parts at a safe distance from the FID chimney while
performing this task. If using hydrogen, the FID flame will not be
visible.

Agilent Technologies 7890 Series Specifications

General

Brand	Agilent Technologies
Model	7890 Series
Category	Laboratory Equipment
Language	English