136 1260 Infinity QuatPump VL User Manual
9 Maintenance
Exchanging the Active Inlet Valve (AIV) or its Cartridge
Exchanging the Active Inlet Valve (AIV) or its Cartridge
1 Remove the front cover.
2 Unplug the active inlet valve cable from the connector.
3 Disconnect the solvent inlet tube from the inlet valve (be aware that solvent
may leak out of the tube due to hydrostatic flow).
4 Unscrew the adapter from the active inlet valve.
When If internally leaking (backflow)
Tools required Description
Wrench, 14 mm
Pair of tweezers
Parts required # p/n Description
1 G5699A Active Inlet Valve Upgrade Kit
includes service and the parts listed below
1 G1312-60025 Active inlet valve body, without cartridge (OPTIONAL)
1 5062-8562 Active Inlet Valve Cartridge (400 bar)
1 G1311-67304 Connecting tube, MCGV to AIV
Preparations • Switch off pump at the main power switch and unplug the power cable.
• Use an optional solvent shutoff valve or lift up solvent filters in solvent reservoirs for avoiding
leakages.
The active inlet valve can be installed for highest method backward compatibility or special
applications.
By default, 1260 Infinity pumps do not have an active inlet valve. If an AIV shall be installed,
please contact your Agilent service representative.
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