Metrohm 806 Exchange Unit - Manual (Page 31)

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5 Handling and maintenance
806 Exchange Unit
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6 Check the piston and cylinder for any changes once more before
assembling the exchange unit. If the dosing cylinder should exhibit
scratches or rough areas, then it must be replaced.
5.1.3 Assembling the exchange unit
Mounting the cylinder
Proceed as follows:
1 Insert the greased piston (see above) carefully into the cylinder for
approx. 1 cm.
2 Slide the cylinder holder from above over the cylinder (O-ring must
be on the upper side) and press firmly.
3 Insert the cylinder with holder into the light protection and press
firmly.
4 Attach the exchange unit onto the control device.
5 Dose manually until the piston rod of the drive protrudes just out of
the body of the exchange unit.
6 Insert the cylinder with light protection from above into the cylinder
holder.