Teledyne 9110AH - Nitrogen oxides analyzer User Manual
Page 166
TELEDYNE Model 9110AH NO
X
Analyzer Operator Manual, 01620, Rev. F
9-50
The generator cartridge - transformer assembly is potted to eliminate corona and increase
safety. The module cannot be disassembled.
Common faults in the ozone generator are:
1. A leak or some other failure in the drier will let ambient air into the generator. There is
enough water vapor in room air to cause the generator to make nitric acid aerosol. It is very
corrosive and causes the generator cartridge to short out, and plug up due to salt build-up.
This reduces the ozone concentration generated, which can cause the analyzer to be non-
linear due to insufficient ozone concentration. Also, the nitric acid can destroy parts down
stream of the generator.
2. Contaminated ozone generator cartridge. Disconnect fittings and run water through the
cartridge to clean.
3. Failure of the driver board.
Table 9-10: Ozone Generator Control Conditions
Condition
Description
Ozone
Generator
1
Manual override off (SETUP-MORE-DIAG-OZONE GEN).
OFF
2
Manual override on.
ON
3
Ozone flow below low warning limit for 5 minutes (OFLOW_SET
setup variable).
OFF
4
Instrument powered on for more than 30 minutes.
ON
5
Instrument powered off for less than 1 hour and ozone generator was
on when instrument was powered off.
ON
6
Ozone flow above low warning limit for 0.5 minutes and condition 4
or 5 is true.
ON
NOTE
The ozone generator is independently controlled in the SIGNAL I/O, OPTIC
TEST, and ELECTRICAL TEST diagnostics. After exiting these diagnostics,
the ozone generator is restored to the state specified by the above
conditions.