User manual

114 Bio-inert Quaternary Pump 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
G5611-60025 Active Inlet Valve (AIV, Bio-inert), without cartridge
G5611-60020 Cartridge for AIV (Bio-inert)
G1311-67304 Connecting tube, MCGV to AIV
Preparations • Switch off pump at the main power switch and unplug the power cable.
• Use a solvent shutoff valve or lift up solvent filters in solvent reservoirs for avoiding leakages.