1290 Infinity II High-Speed Pumps User Manual 46
3Using the Pump
Purging the Pump
If the system has been run dry or air has diffused into the pump it might require
additional steps to get rid of the air again. Following the procedure below will give
the best and fastest results.
1 Change solvents to isopropanol.
2 Purge the system with 3 mL/min, composition 50/50 and for 10 min.
3 Attach a column suitable for isopropanol and set the Max. pressure limit to
the limit of the column.
4 Run the system at composition 50/50 and a flow rate that gives a pressure
close to the limit of the column. Turn on the Conditioning function.
5 Observe the pressure fluctuations. The system is air free as soon as the
pressure is stable.
6 Change solvents and column according to the analytical conditions and purge
the system to change solvents.