ActionStep
Place the pump head face down on the bench. Pull out the piston together
with the return spring.
6
Inspect the piston and return spring for sign of damage. If damaged, discard
the piston and return spring and use a new piston and return spring when
assembling the pump head.
7
Unscrew the two screws securing the drain plate and the rinse chamber.
Lift off the drain plate, and discard the membrane located between the drain
plate and the rinse chamber.
8
166 ÄKTA avant Operating Instructions 29101556 AB
7 Maintenance
7.3 Replace pump piston seal, O-ring, and rinse membrane of Pump P9-S
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