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Troubleshooting and Diagnostics
This section describes how the 241CE II Analyzer detects and displays alarms
associated with its operation, what the alarms mean, and action to take to
correct the alarms. This section also discusses how to view the alarms from the
User Interface and how to reset the analyzer if a system reset is required.
Generally, most troubleshooting and diagnostics can be done by working from
the User Interface on the front of the analyzer's Electronics Enclosure.
About Alarms and Status Codes
The analyzer incorporates a built-in diagnostics function that continuously
monitors key operating parameters and the progression of each stage of the
measuring cycle.
If the diagnostics function detects parameter values that are different from the
established norm or if the measuring cycle stage ends abnormally, primary
Status Code (SCode) messages are generated. The SCode, which is the sum of
the primary SCodes, can be viewed from the Stat\History menu. The SCode
is also presented on an analog output channel (which allows you to view it
on the User Interface). Primary SCodes relating to analyzer performance set
alarms which trigger relay contacts that turn on LEDs on the User Interface.
Alarms are generated if the determined HCDP temperature is above the preset
value or if other operating threshold parameters exceed (fall below/rise above)
their predetermined values.
A description of each alarm is recorded in the appropriate sub-menu (SCode
or XSCode) in the Stat\History menu. The alarm description is preceded by 'w'
for a warning alarm (example, "w TimeOut") or 'f' for a Fault alarm (example,
"f Cool Cct"). After an alarm has been corrected, it is stored in its correspond-
ing History Buffer (^SC or ^XSC). A history of the last nine alarms generated by
the analyzer (if they have been corrected) can be logged in each buffer.
4-36 | 241CE II Hydrocarbon Dewpoint Analyzer
PN 903-8797, Rev A
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Table of Contents
Troubleshooting
