ActionStep
Unscrew the purge valve by turning it counter-clockwise, and lift off the
metal ring.
4
Unscrew the plastic nut of the upper check valve using an adjustable wrench,
and gently lift off the upper check valve.
5
Unscrew the two white plastic screws located below each pump head. Pull
the plastic connectors to the sides to release the inlet manifold.
6
174 ÄKTA avant Operating Instructions 29101556 AB
7 Maintenance
7.5 Clean pump head check valves
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