Replace O-ring, piston seal, and rinse membrane
ActionStep
Unscrew the purge valve of the pump head. Replace the O-ring on the purge valve with
a new O-ring, 3x1 mm, and screw the purge valve back into the pump head.
1
Note:
Always use Lubricant 56686700 when exchanging the O-ring 3 x 1 mm.
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.
2
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.
3
348 ÄKTA pure User Manual 29119969 AB
7 Maintenance
7.8 Replacement procedures
7.8.11 Replace pump piston seals of Pump P9-S
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