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