4 • Troubleshooting
Doc. 031851-05 12/04 4-3
• OVER CONDUCTIVITY
This message usually appears for the first few minutes after the ICS-90 is
started. If the message appears at other times, it indicates a problem.
To troubleshoot:
1. Perform the suppressor QuickStart procedure:
a. Disconnect the separator column outlet line and connect it to the
DS5 cell inlet line.
b. Turn on the pump from the ICS-90 Control panel in Chromeleon
and allow the suppressor to regenerate for 5 minutes.
c. Turn off the pump and allow the suppressor to hydrate for
5 minutes.
d. Reconnect the separator column outlet line and cell inlet line.
2. If the high background persists:
• Prepare fresh eluent.
• Prepare fresh regenerant.
• Verify the cell calibration by pumping deionized water through
the cell (bypassing the column(s) and suppressor). The total
background should be less than 1.0
µS.
• Perform the suppressor off-line regeneration procedure. For
instructions, refer to the suppressor manual.
• If the problem persists, replace the suppressor (see Section 5.11).
• DATA BUFFER OVERFLOW ERROR
Various electronics-related problems can cause the following error message to
be displayed in the Audit Trail:
If this warning appears, call Dionex for assistance. The ICS-90
electronics components cannot be serviced by the user.
Conductivity exceeds limit.
Module data buffer overflow. Data may have been lost.
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