User Manual of CIC-D100 Ion Chromatograph
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5 Common Faults and Troubleshooting
This chapter lists the causes of some problems that may occur during the operation of
CIC-D100 instrument and provides more detailed solutions. When facing similar problems
during use, please refer to this section to try to solve them yourself. If you encounter any
problem that cannot be solved, please call our customer service department (0532-68069791) for
more detailed solution.
5.1 Pump pressure fluctuation
1. The check valve of infusion pump is blocked
Solution: Replace the check valve or put the check valve into 1: 1 pure water/nitric acid
solution or absolute ethyl alcohol for ultrasonic cleaning.
2. The six-way injection valve is blocked
Solution: Investigate in sequence according to the direction of liquid flow, find out the fault
points and eliminate them.
3. The chromatographic column filter membrane is blocked
Solution: Remove the chromatographic column and unscrew the column head, carefully
take out the filter membrane, soak it in 1: 1 pure water/nitric acid solution, clean it with
ultrasonic wave for 30min, rinse it with ultrapure water and install it; or back flush the
chromatographic column after reverse connection; note that the chromatographic column should
not be connected to the flow path.
5.2 Frequent overpressure
1. The maximum pressure limit setting of infusion pump is too low
Solution: Under the working flow of chromatographic column, adjust the maximum
pressure limit to 5 MPa higher than the current working pressure.
2. The flow path is blocked
