ICS-1000 Ion Chromatography System Operator's Manual

2 • FeaturesPressure TransducerFlow exiting the secondary pump head is directed to the pressuretransducer (see Figure 2-12), which measures the system pressure.Pressure measurements, which can be monitored from the ChromeleonControl Panel, indicate that the pumping system is delivering smooth,accurate flow.The system pressure should remain consistent (no more than a 3%difference from one pressure reading to the next). High and low pressurelimits can be used to stop the pump flow if a limit is exceeded. SeeSection 4.1 for troubleshooting information if a pressure limit isexceeded.Pulse DamperFlow output from the pressure transducer continues to the pulse damper,which smooths minor pressure variations. From there, flow is directed tothe injection valve and then to the remainder of the chromatographysystem.Piston Seal WashThe pump includes a piston seal wash assembly that can be set up tocontinuously rinse the back of the piston seals to remove salt crystals andprolong the life of the seals. To use this feature, an external water sourcemust be connected. See Section B.21 for connection instructions.For continued protection of the pump, replace the piston rinse seals (seeSection 5.6) and O-rings in the seal wash assembly every 6 months, orwhenever you replace the main piston seals for the ICS-1000 pump.Doc. 031879-01 3/03 2-23