User Manual of CIC-D100 Ion Chromatograph
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2. Turn the exhaust valve counterclockwise for 1/4-1/2 turn to start the exhaust valve;
3. Draw the injector or control the flow rate of the pump to 1 mL/min, and slowly pump out
the gas in the pipeline or the eluent before replacement;
4. Keep pumping until about 20 mL of new replacement eluent is extracted to ensure that
the gas and residual eluent in the pipeline have been completely drained away;
5. Finally, adjust the flow rate to normal and tighten the exhaust valve clockwise.
B.11 System balance
1. When the pump flushing is finished, turn on the pump and gradually set the pump flow
rate to the operating speed;
2. Flush the pipeline for about 30min to balance the flow path of the whole system;
3. Monitor the pressure fluctuation of the pump by looking at the pump window or reverse
control software;
4. Confirm whether the eluent flow path finally flows out from the REGEN OUT end of the
suppressor and whether the pump pressure is stable;
5. Confirm whether the background baseline conductance is normal.
B.11.1 Backpressure requirement of eluent storage tank
To remove the electrolytic gas generated by the eluent generator, the system pressure at the
rear end of the eluent generator is required to be in the range of 8 Mpa to 17MPa (including the
overall pressure of the protection column, chromatographic column, suppressor and conductivity
cell). If the pressure of the functional components is less than 8MPa, a backpressure pipe can
be added at the position from the outlet of the eluent generator to the front of the injection valve
to increase the system pressure to a suitable value. When the system pressure at the rear end of
the eluent generator is ≤8MPa, the gas removal is incomplete, which is easy to cause baseline
fluctuation; when the system pressure at the rear end is ≥17MPa, it is easy to cause the degassing
device to rupture.
