134 1290 Infinity Quaternary Pump User Manual
9 Maintenance
Replacing the Inlet Weaver
Replacing the Inlet Weaver
Parts required p/n Description
G4204-81090 1290 Infinity Quaternary Pump Inlet Weaver Assembly
Preparations • Switch off pump at the main power switch
• Remove the front cover
• Use an optional solvent shutoff valve or lift up solvent filters inside solvent bottles for avoiding
leakages
• For easy access to the inlet weaver assembly, remove tubing connections between MCGV and
degasser
1 Open the screw at the bottom of the inlet valve. 2 Open the fitting at the center of the multi-channel
gradient valve (MCGV). Do not open the screw marked
with the red cross. Remove the inlet weaver from the
MCGV.
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