8-1
This section provides a systematic approach to establishing the cause of an instrument
malfunction. Before taking any corrective action, be certain you have collected as much
pertinent information as possible.
To establish probable cause, you should:
»
Review the printed reports for trends in data and errors. Use the detailed format, if
possible, to obtain as much information as possible. An explanation of the report data is
covered in this section.
»
Check reagent and membrane installation dates. Compare the elapsed time to the
recommended time.
»
Look and listen for problems (fluid leaks, salt build-ups, air bubbles in the chamber,
loose connections, noisy components, etc.).
»
Review Section 5.4, Menu Diagnostics, to learn more about how you can test individual
components of the 2700 SELECT.
»
Use the troubleshooting chart in this section to assist you in identifying the problem,
then use the chart to guide you to a corrective action.
If the problem cannot be resolved, contact YSI Customer Service (address and phone
information in Appendix F). When communicating with service personnel, please indicate the
serial number of the instrument. If writing or transmitting a FAX for assistance, please include
a thorough description of the problem and copies of printouts, if possible.
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