SS2000 Operator’s Manual A–1
Appendix A: Troubleshooting
This section presents recommendations and solutions to common problems,
such as gas leaks, contamination, excessive sampling gas temperatures and
pressures, and electrical noise. If your analyzer does not appear to be
hampered by one of these related problems, contact your sales representative
for service.
Gas Leaks
Probably the most common cause of erroneous measurements is outside air
leaking into the inlet sampling line. It is recommended the inlet lines be
periodically leak-tested, especially if the analyzer has been relocated or has
been replaced or returned to the factory for service and the sample lines have
been reconnected.
Contamination
Contamination and long exposure to high humidity are valid reasons for
periodically cleaning the gas sampling lines. Contamination in the gas sampling
lines can potentially find its way to the sample cell and deposit on the optics or
interfere with the measurement in some other way. Although the analyzer is
designed to withstand some contamination, it is recommended to always keep
the sampling lines as contamination free as possible.
To keep the sampling lines clean:
1. Make sure that a membrane separator filter (included with most
systems) is installed ahead of the analyzer and operating normally.
Replace the membrane if necessary. If liquid enters the cell and
accumulates on the internal optics, a Laser Power too Low fault
will result.
2. If mirror contamination is suspected, see “Cleaning the Mirrors”
on page A-2.
3. Disconnect the gas sampling line from the inlet port of the analyzer.
4. Wash the sampling line with alcohol or acetone and blow dry with
mild pressure from a dry air or nitrogen source. It may be necessary
to heat the lines for a few minutes to clear residual solvent from the
lines.
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