DescriptionPartDescriptionPart
Piston seal7Piston1
Outlet check valve8Return spring2
O-ring9Pump membrane housing3
Purge valve10Star screws4
Star screws11O-ring5
Inlet check valve12Support washer6
Star screws13
Introduction
Follow the instructions below to replace the O-rings, piston seal, and pump membrane housing of
pumps P9 and P9H.
Always replace the O-rings, piston seals, and pump membrane housing of both pump heads
of a pump at the same time.
Note:
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
ÄKTA pure User Manual 29119969 AB 337
7 Maintenance
7.8 Replacement procedures
7.8.10 Replace pump piston seals of Pump P9 or P9H
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