11
Before returning a pipette, please ensure
that it is completely free of any chemical,
biological, or radioactive contamination.
Replacing the push-button assembly
Perform the following steps to replace the push-
button assembly.
1- Hold the Distriman in one hand and pull the
push-button assembly gently in the axial direc-
tion, to remove it.
2- Fit the new push-button assembly by placing
the core of the push-button into the hollow shaft
and then pressing on the push-button with your
thumb until it clicks back into place.
Replacing the DistriTip retaining spring
To replace the retaining spring, perform the fol-
lowing steps.
1- Remove the DistriTip.
2- Pull the filling-knob fully upwards.
3- Make a note of the position and orientation of
the spring (K, page 10).
3- Pull on the retaining spring at an angle of 90° to
the body of the Distriman. This can be done by
inserting a small screwdriver under the spring,
or by pulling on it with a small pair of pliers.
4- The new spring can be fitted by simply pushing
it back into the slot from which it came. How-
ever, make sure that spring goes all the way
back into the Distriman's body. You may need
to apply moderate lateral force to the ends of
the spring to make sure that they are located
in their retaining slots.
Replacing the piston retaining assembly
The DistriTip retaining collar is fixed to a steel shaft
to form the piston retaining assembly. The piston re-
taining assembly, which connects to the filling-knob,
must be replaced as a unit. To replace the retaining
collar (D, page 10), perform the following steps.
