Maintenance and Troubleshooting | 5-11
Measuring Cell Preventive Maintenance
The o-rings in the Measuring Cell should be replaced every year to avoid
a leak in the sample system. If the sample system operates above atmo-
spheric pressure, sample fluid can leak from the Measuring Cell into the
Oven/Sample System Enclosure. While the Measuring Cell is disassem-
bled, clean its chambers and parts.
More frequent cleaning may be required if the sample fluid contains
excessive contaminants.
Clean the Measuring Cell and its windows:
• If the analyzer responds slowly to zero when the sample system is free
of restrictions, or
• If evidence of contamination is present in the Sample Line and/or Vent
Line, or
• Every year as indicated in the “Analyzer Preventive Maintenance
Schedule.”
Replace the o-rings/windows in the Measuring Cell:
• If, during an unscheduled cleaning (see cleaning requirements above),
the Measuring Cell Windows are found to be damaged (scratched,
cracked, or chipped).
Replace the o-rings in the Measuring Cell every time this assembly is
apart.
• Every year as indicated in the “Analyzer Preventive Maintenance
Schedule.”
This procedure is based on a 40 cm Measuring Cell. For other Cells,
refer to the Measuring Cell Manual Supplement in the “Supplemen-
tal Information” section of this manual and the Documentation Pack-
age shipped with the analyzer.
O-ring part numbers can vary, depending on the application. Verify
all part numbers before ordering/replacing.
When cleaning the Cell and/or other sample system components,
use only cleaning materials that are suitable for use with the
sample species.
!
WARNING
NOTE
NOTE
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