ICS-1000 Ion Chromatography System Operator's Manual

3 • Operation and Maintenance3.8 Equilibrate the System and Verify Operational Status1. Allow the system to equilibrate. During equilibration, the ChromeleonControl Panel displays the background conductivity (the conductivity of theeluent before sample injection) and the system backpressure.2. Monitor the background conductivity. Refer to the column manual for theappropriate background conductivity for your application.3. Offset the background and zero the reading by clicking the Autozero buttonon the Chromeleon Control Panel (see Figure 3-4).4. Monitor the system pressure from the Control Panel to make sure it is at theexpected pressure for the installed column (refer to the column manual fordetails) and it stable.• If the pressure is less than the expected amount, gas may be trapped in thesystem. Release the gas by removing the pump fitting on the injectionvalve port, labeled P (2). Allow the air to escape and then reconnect thefitting.• If the pressure fluctuates by more than about 0.13 MPa (20 psi), prime thepump. See Section 4.3 for additional troubleshooting information.• If the pressure is too high, there may be a restriction in the systemplumbing. See Section 4.7 for troubleshooting information.5. Verify that the baseline conductivity is at the expected reading for yourapplication and is stable. In general, it should be