Disassemble the pump head
ActionStep
Make sure that no run is in progress on the instrument.1
Disconnect the tubing from the pump head, and disconnect the pump inlet
tubing.
2
Unscrew the two white plastic screws located below each pump head by
hand. Pull the plastic connectors to the sides to release the inlet manifold.
3
Disconnect the tubing of the pump piston rinsing system.4
Unscrew one of the two screws of the pump head using a hex wrench. Un-
screw the second screw, and at the same time push firmly on the front of
the rinse chamber to compensate for the pressure of the piston return spring.
5
ÄKTA avant Operating Instructions 29101556 AB 165
7 Maintenance
7.3 Replace pump piston seal, O-ring, and rinse membrane of Pump P9-S
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