Agilent Technologies G6600-90006 - Manual (Page 109)

Operation and Maintenance Manual 109
Ozone Generation Problems
Following the verification of power to the instrumental components, the next
step in tracing a problem is the determination of ozone production. With the
ozone toggle off and the vacuum pump on, read the signal output on the front
of the Detector. Toggle the ozone on. A properly operating Detector will
typically display a difference in background of 0.2 to 2 mV. If no change is
observed, a problem most likely lies within the ozone generator itself, the high
voltage transformer supplying power to the ozone generator, or in the transfer
line system between the ozone generator and the reaction cell.
Ozone Generator
Loss of ozone from the ozone generator may arise from generator fault, or from
a leak in the corona discharge tube. Typically a pungent ozone odor will be
noticed emanating from the side of the Detector if the ozone generator is
leaking.
Removal of the left side panel (as seen from the front of the Detector) and
removal of the ozone generator cover panel may reveal corrosion caused by
escaped ozone. If this is the case, replace the ozone generator. Resistance
across the leads to the ozone generator should be infinite. Measure the
resistance with an ohmmeter to verify. If there is a resistance, replace the
ozone generator.
High Voltage Transformer
Using high voltage probes, directly measure the secondary output of the ozone
generator. A properly functioning generator will produce approximately
7500 volts. Output less than 3000 volts mandates replacement of the high
voltage transformer.
WA R N I N G
Any operation requiring access to the inside of the equipment, could result in injury. To
avoid potentially dangerous shock, disconnect from power supply before opening the
equipment.
WA R N I N G
High voltages supply the ozone generator. Unplug the instrument.
WA R N I N G
The high voltage transformer produces 6000 - 8000 volts.
The following test should only be performed by those with high voltage experience using
high voltage probes.