Agilent Technologies 1290 Infinity User Manual page 178

9
Maintenance
Pump Head Maintenance (Tool Free)
3
Turn the pump head assembly upside down.
5
Remove the inlet valve and the outlet valve from the
primary pump head.
N O T E
Clean the valves by sonication, if appropriate. A good
cleaning solution is 50 % isopropanol in water.
178
4
Remove the link plate by gently pulling it off the pump
head assembly.
The two pump chambers are now isolated.
6
Binary/High Speed Pumps only: Remove the high
pressure filter from the secondary pump head.
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