GE AKTA avant Operating Instructions Manual page 167

Step
9
10
Replace O-ring, piston seal, and
rinse membrane
Step
1
ÄKTA avant Operating Instructions 29101556 AB
7.3 Replace pump piston seal, O-ring, and rinse membrane of Pump P9-S
Action
Lift off the rinse chamber. Gently pull off the piston seal. Discard the used
seal.
Clean the pump head, rinse chamber and drain plate in an ultrasonic bath.
If there are particles on any surfaces, the check valves should be removed
and cleaned separately, see
page 173.
Action
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.
Note:
Always use Lubricant 56686700 when exchanging the O-ring 3 x 1 mm.
Section 7.5 Clean pump head check valves, on
7 Maintenance
167