16
Reassemble the pipette (refer to the figure, page 15).
Tighten the connecting nut (turn clockwise).
Refit the tip-ejector (see above).
changing the o-ring
The O-ring and seal are on the piston;
they must not be
autoclaved
, if worn or damaged in any way (chemical or
mechanical), they must be replaced.
The dimensions of the O-ring vary depending on the
model of pipette.
Remove the tip-ejector (see above).
Unscrew the connecting nut by turning it counter-
clockwise.
Carefully separate the lower and upper parts.
Remove the piston assembly, O-ring and seal.
Clean or replace the seal then the O-ring.
Reassemble the pipette (refer to the figure, page 15).
Tighten the connecting nut (turn clockwise).
Refit the tip-ejector (see above).
multichannel models
changing the Tip-ejector
To remove the tip-
ejector, keep both
ejector locks de-
pressed.
Pull the tip-ejector
down.
To refit the tip-
ejector, gently re-
insert the tip-ejector
vertically into the
rails of the ejector
support.
Pull lightly on the
tip-ejector to check
the position.
Ejector lock
Tip-ejector
Ejector spacer
