Agilent Technologies InfinityLab LC Series User Manual page 161

8 Maintenance
Exchange the Active Inlet Valve (AIV) or its Cartridge
1 Unplug the active inlet valve cable from the connector.
2 Disconnect the solvent inlet tube from the inlet valve (be aware that solvent
3 Unscrew the adapter from the active inlet valve.
4 Using a 14 mm wrench loosen the active inlet valve and remove the valve
Active inlet valve cartridge
Active inlet valve
5 Using a pair of tweezers remove the valve cartridge from the actuator
6 Before inserting the new valve cartridge clean the area in the actuator
7 Insert a new cartridge into the actuator assembly (make sure the valve
8 Insert the new valve into the pump head. Using the 14 mm wrench turn the
9 Position the valve such that the solvent inlet tube connection points towards
10 Using the 14 mm wrench tighten the nut by turning the valve into its final
11 Reconnect the adapter at the active inlet valve.
12 Reconnect the solvent inlet tube to the adapter. Reconnect the active inlet
13 Purge the system with 30 mL of solvent in order to achieve a low pressure
Agilent InfinityLab LC Series 1260 Infinity II Isocratic and Quaternary Pumps User Manual
may leak out of the tube due to hydrostatic flow).
from the pump head.
Figure 12 Active Inlet Valve Assembly
assembly.
assembly. Flush the cartridge area thoroughly with alcohol.
cartridge is completely inserted into the actuator assembly).
nut until it is hand tight.
the front.
position (not more than a quarter turn).
valve cable to the connector in the Z-panel.
ripple.
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