GE AKTA avant Operating Instructions Manual page 168

7 Maintenance
7.3 Replace pump piston seal, O-ring, and rinse membrane of Pump P9-S
Step
2
3
Assemble the pump head
Make sure to assemble the pump head correctly. Refer to
Step
1
168
Action
Wet a new seal with 20% ethanol. Place the new seal in the hole in the front
section of the pump head and press it into position.
With the pump head facing downwards on the bench, place the rinse
chamber onto the front section of the pump head with the rinse ports in line
with the check valves. The conical depression in the rinse chamber shall be
facing upwards. Wet a new membrane with 20% ethanol, and place the
membrane into the rinse chamber with the conical face upwards.
Action
Place the drain plate on top of the assembly. Screw the two screws through
the drain plate and the rinse chamber using a cross-headed screwdriver.
Illustrations, on page
ÄKTA avant Operating Instructions 29101556 AB
153.