BRAND Dispensette S Instrucciones De Manejo página 52

Replacement of discharge tube/ valves
Replacing the discharge tube (cont.)
Filling valve
1.
Pull out the recirculation tube and the telescoping filling tube
(Fig. 1).
2.
Use the mounting tool to unscrew the filling valve (Fig. 2).
3.
Screw in the new filling valve first by hand and then tighten it
with the mounting tool.
Note:
If the instrument does not fill up, and if some elastic resistance is
evident when the piston is pulled upward, then it is possible that the
ball valve is stuck.
In this case, loosen the ball valve using light pressure, for example,
with a 200 µl plastic pipette tip (see the figure at the side).
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