USER MANUAL | ICOS | INSTRUCTIONS | UM/ICOS-EN REV. B.2
5 Maintenance
Daily Operation Checklist
Table 12 describes routine maintenance tasks that keep your analyzer operating smoothly.
Table 12: Maintenance Checklist
Every 1-2 days
On the
Spectrum Display
, verify that the spectrum is correct.
The spectrum should appear as shown in Figure 30. Become
familiar with the normal appearance of the spectrum (the best
way of diagnosing analyzer performance). Any deviations
from normal could indicate a problem with the analyzer.
Log the transmitted intensity displayed in the upper panel of
the spectrum screen. Any decrease in transmitted intensity
could be indicative of dirty mirrors.
Log the analyzer pressure. Any decrease in pressure could be
indicative of an obstruction in the flow system. An increase in
pressure could be indicative of a leak in the system or a pump
failure.
Every 3-6 days Check the Laser Offset and adjust if necessary. (Figure 43)
Mirror Ring-Down Time and Maintenance
Measurement cell mirrors are protected from contamination by an internal inlet filter. With
continued use the mirrors may gradually decline in reflectivity.
Because of the relatively short path length used in the analyzers, the ring-down is too short
to actively measure. To track mirror reflectivity, monitor the measured value of the
reference standards and note any decrease.
If the measured value of a known reference cylinder has changed by more than 20%:
1. Request a mirror cleaning kit from ABB-LGR, and clean the mirrors.
2. Measure the reference cylinder again.
3. If the analyzer performance does not improve, contact ABB-LGR.
o Technical Support: icos.support@ca.abb.com
Only authorized persons may open the analyzer cover or perform internal
maintenance. Make sure the analyzer is unplugged before working with
the internal components. Failure to do so may result in damage to the
analyzer and electric shock.
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