Agilent Technologies G6600-90006 Diagnosing General Problems, Troubleshooting Detector Issues

Diagnosing General Problems

Table 5 Troubleshooting Detector Issues

Problem	Possible Cause	Diagnosis	Corrective Action
No Response	No ozone	Little or no difference in	Continue below. See No
		output signal between ozone	Ozone in Problem column.
		ON vs. OFF. Typically the
		background signal will be
		0.3-0.8 mV higher with the
		ozone ON.
No Ozone	Blown fuse	Ozone indicator light	Replace ozone fuse.
		remains off when ozone
		button is pushed.

No Ozone	High Voltage Transformer	No difference in output
	and/or ozone generator is	signal between ozone ON vs.
	inoperative.	OFF even though flow
		through the ozone generator
		is good (about
		25-35 mL/min).

Have ONLY someone with high voltage experience use a high voltage probe to check the input to the ozone generator across the two wires. It should be

>6000 volts. If it is not then replace high voltage transformer. If it is, replace ozone generator.

No Ozone	Ozone restrictor(s) plugged.	Needle on the regulator	Replace plugged
		inside front panel does not	restrictor(s).
		move downward when
		regulator is turned fully
		counterclockwise. The
		measured flow is low or
		non-existent.
No Response	Hydrogen and/or air ran out.	Measure flow rates.	Set correctly.
No Response	Broken ceramic tube(s).	Pressure on Controller	Change tubes.
		and/or Detector is too high
		or too low.
No Response	Heating element failure.	Temperature at Controller	Replace heating element.
		<100 °C.
Low Response	Improper hydrogen/air flow	Measure flow rates.	Adjust flow rates.
	rates.
Low Response	Detector leaks.	Note pressures on	Locate and repair leaks,
		Controller.	check integrity of ferrules.

Operation and Maintenance Manual 113