Agilent Technologies 1290 User Manual page 69

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 solvent to isopropanol.
2 Turn on the Prime function.
3 Purge the system with 10 ml, composition 50/50 and for 10 min.
4 Attach a column suitable for isopropanol and set the Max. pressure
5 Run the system at composition 50/50 and a flow rate that gives a
6 Observe the pressure fluctuations. The system is air free as soon as the
7 Change solvents and column according to the analytical conditions and
1290 Infinity Quaternary Pump User Manual
limit to the limit of the column.
pressure close to the limit of the column.
pressure is stable.
purge the system to change solvents.
4
Using the Pump
Priming the Pump
69