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; Disconnect The Tubing Of The Pump Piston Rinsing System - GE AKTA avant Operating Instructions Manual

Disassemble the pump head
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ÄKTA avant Operating Instructions 29101556 AB
7.3 Replace pump piston seal, O-ring, and rinse membrane of Pump P9-S
Action
Make sure that no run is in progress on the instrument.
Disconnect the tubing from the pump head, and disconnect the pump inlet
tubing.
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.

Disconnect the tubing of the pump piston rinsing system.

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.
7 Maintenance
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