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This chapter is a guide to troubleshooting problems that may occur while
operating the Dionex ED50A Electrochemical Detector. Turn to the section that
best describes the operating problem. There, the possible causes of the problem
are listed in order of probability, along with the recommended courses of action.
For instructions on running the Dionex ED50A diagnostics program, refer to
Appendix C.
When necessary, refer to User's Compendium for Electrochemical Detection
(Document No. 065340). The compendium is the primary source of basic
troubleshooting help for electrochemical cells and electrodes.
If you are unable to eliminate a problem, contact Thermo Fisher Scientific. In the
U.S., call 1-800-346-6390 and select the Technical Support for Dionex products
option. Outside the U.S., call the nearest Thermo Fisher Scientific office.
4.1
No Detector Response
•
Cell is off
Turn on the cell (from the
•
Analog output range set too high; although the display indicates a
response, no recorder response observed
Select a more sensitive analog output range.
•
Wrong full-scale output (or no full-scale output) selected
Select 0.01, 0.10, or 1 volt full-scale.
•
No flow from pump
Check the pressure reading on the pump to verify that the pump is on.
•
Detector offset out of range
Press
Offset
•
Cell cable disconnected
Check the cell cable connection on the electronics chassis (see Section 2.3).
Doc. 065551-01 6/13
or
MAIN
on the Dionex ED50A front panel.
4 • Troubleshooting
screen).
DETAIL
4-1
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