Metrohm 807 Dosing Unit - Manual (Page 18)

3.1 Greasing the dosing unit
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807 Dosing Unit
3 Installation
3.1 Greasing the dosing unit
We recommend that the upper side of the centering tube and interior
edges of the upper side of the housing be greased with paraffin grease
6.2803.010 before the dosing unit is used for the first time. This measure
will reduce friction resistance when the centering tube is rotated.
Removing the housing
Figure 5 Removing the housing
Remove the housing of the dosing unit as follows:
1 Place the dosing unit on a flat, level surface so that the lettering of
the volume specification faces towards the front.
2 Keep the locking button pressed down.
3 Rotate the housing of the dosing unit by ca. 1 cm to the right (in
counterclockwise direction).
4 Release the locking button.
5 Carefully raise the housing upward.
When removing the housing, take care to ensure that the spring clip
on the interior side of the housing does not slide out of place.