Metrohm 807 Dosing Unit - Manual (Page 36)

3.8 Assembling the dosing unit
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807 Dosing Unit
3.8.2 Attaching cylinder unit in distributor
Attach the cylinder unit in the distributor as follows:
1 Place the distributor on a flat, level surface.
2 Place the complete cylinder unit in the distributor.
3 Rotate the cylinder unit in such a way that the marking rib on the
centering tube is lined up with the marking rib on the edge of the
distributor.
Figure 22 Marking ribs on the centering tube and edge of the dis-
tributor
The centering tube must be in correct position for the following assembly
of the housing.
3.8.3 Attaching the housing
Attach the housing as follows:
1 Check whether the interior spring clip is positioned correctly in its
guide groove.
It must be able to move readily when the exterior locking button is
pressed.
2 Slide the housing of the dosing unit onto the centering tube.
The marking rib on the housing must be lined up with the marking
rib on the edge of the distributor and the centering tube must fit into
the opening on the upper side of the housing.