Metrohm 806 Exchange Unit - Manual (Page 20)

3.2 Start-up
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806 Exchange Unit
5 If the exchange unit does not snap in, check the following:
Position of the piston rod
Stopcock position of the exchange unit
The switching lever must be directed to the right (stopcock in dosing
position). The arrow marking must point upwards (see step 1).
If the exchange unit is attached correctly, its initialization is being acti-
vated by a micro switch which is triggered by the guide bolts of the
exchange unit. It is being recognized and the data is being read automati-
cally from the data chip.
The control device automatically rotates the stopcock and returns the
stopcock in dosing position.
After this, the LED Status on the control device lights up constantly.
3.2.3 Filling the tubings
The proceeding during the filling of the tubings of the exchange unit
depends on the control device and control software. Consult the corre-
sponding manual for manual dosing and filling.
The function Preparing or PREP of the control software is used to rinse
the cylinder and tubings of the exchange unit and fill them air bubble-free.
You should carry out this function before the first determination or once
per day.