PN 903-8797, Rev A
Diagnostic Flowcharts
If problems with the analyzer are detected, AMETEK recommends that you fol-
low the Diagnostic Flowcharts. Since the Measuring Cell is the component that
is most susceptible to problems, such as contamination, the primary objective
is to ensure proper care of the Measuring Cell Assembly and proper operation
of the analyzer’s sample system.
Preventing leaks in the sample system is critical to proper analyzer op-
eration. The analyzer’s sample system must be leak-checked whenever
it has been dismantled for maintenance or repair.
Generally, preventive/general maintenance consists of:
• Cleaning the Electronics Enclosure’s amepath and checking it for damage
(scratches, dents, wear, etc.).
• Ensuring operating temperatures are within range of their setpoints and
ambient temperatures are suitable.
• Ensuring the ambient temperature is at least 15 °C (27 °F) above the high-
est expected hydrocarbon dewpoint temperature. It is extremely impor-
tant to maintain a relatively stable ambient temperature in the vicinity of
the analyzer, with no rapid uctuations.
• Determining if it is necessary to clean the Measuring Cell and sample
system, and how to clean the Measuring Cell and its components. Also,
determining if Measuring Cell parts require replacement, and changing
out the necessary parts.
• Cleaning and changing out the Filterblock Assembly components.
• Determining if the air lters for the shelter purge and air conditioning sys-
tems (if used) require replacing.
• Determining if the Sample and Vent Lines are plugged, damaged, or sag-
ging.
4-6 | 241CE II Hydrocarbon Dewpoint Analyzer
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