Doc. 031851-05 12/04 4-1
4 • Troubleshooting
This chapter is a guide to troubleshooting problems that may occur while
operating the ICS-90 Ion Chromatography System.
• Section 4.1 describes the error messages displayed in the Chromeleon Audit
Trail.
• The remaining sections in this chapter describe other operating problems and
how to resolve them.
If you are unable to eliminate a problem, contact Dionex for help. In the U.S., call
Dionex Technical Support at 1-800-346-6390. Outside the U.S., call the nearest
Dionex office.
4.1 Alarms and Error Conditions
Chromeleon displays a message in the Audit Trail if any of the following alarm
conditions occurs.
• PUMP OVER PRESSURE ALARM
The ICS-90 has a maximum system pressure limit of 28 MPa (4000 psi). In
addition, the pressure limit can be lowered from Chromeleon (in the Server
Configuration or in the control program). If the system pressure exceeds the
set limit for at least 0.5 second, Chromeleon will stop the pump and the
following error message will appear in the Audit Trail:
To troubleshoot:
1. Check for blockages in the liquid lines by working your way
backward from the cell to the pump (see Figure 2-7
for the flow
schematic).
2. Restart the pump from the ICS-90 Control panel in Chromeleon.
The system pressure has exceeded the limit.
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