Agilent Technologies InfinityLab LC Series User Manual page 159

8 Maintenance
Replace the Solvent Selection Valve (Isocratic Pump)
6 Carefully pull the valve with a cable out of the pump
mainframe.
8 Tighten the screws of the degasser front cover and the
valve holder.
Agilent InfinityLab LC Series 1260 Infinity II Isocratic and Quaternary Pumps User Manual
7 Exchange the defective solvent selection valve.
9 Reconnect all tubings to the solvent selection valve.
NOTE
After an exchange of the valve it may be required to pump
several mL of solvent before the flow stabilizes at a
pressure ripple as low as it used to be when the system was
still working properly.
159