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ABB GLA131 Series Microportable Analyzers
User Manual
ABB PROPRIETARY INFORMATION
77
Preventive Maintenance
Daily Operation Checklist
Table 13 describes routine maintenance tasks that keep your analyzer operating
smoothly.
Table 13: Maintenance Checklist
Frequency
Task
Every 1-2 days
On the
Spectrum
display, verify that the spectrum is
correct. The spectrum should appear as shown in
Figure 27 and Figure 28. 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 42 and
Figure 43)
Recommended Maintenance
The recommended maintenance is:
ICOS mirror cleaning
Inline particulate filter
Solid-state drive (SSD) maintenance
Lithium-ion battery inspection
Mirror Ringdown 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.
If a significant change occurs in the mirror ringdown time (for example, greater
than 20% reduction), the precision of the measurements may be reduced.
Periodically note the ringdown time. If a significant reduction in ringdown time
occurs: