100 Agilent 1290 Infinity II Flexible Pump User Manual
7 Maintenance
Replace the Multi-Channel Gradient Valve (MCGV)
Replace the Multi-Channel Gradient Valve (MCGV)
Tools required p/n Description
0100-1710 Mounting Tool for Tubing Connections
8710-0899 Pozidriv screwdriver
Parts required p/n Description
G1311-67701 Multi channel gradient valve (MCGV)
Preparations • Switch off pump at the main power switch
• Open the doors
• Use an optional solvent shutoff valve or lift up solvent filters inside solvent bottles for avoiding
leakages
For best performance and life time, use lower channels A and D for aqueous solvents in
buffer applications.
1
Use the mounting tool for removing tubing connections
between the degassing unit and the MCGV.
2 Remove the inlet weaver, see “Replace the Inlet
Weaver” on page 90.
3 Remove the cover from the MCGV.
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