Metrohm 806 Exchange Unit - Manual (Page 37)

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6 Troubleshooting
806 Exchange Unit
￭￭￭￭￭￭￭￭ 29
Problem Cause Remedy
￭ Remove the dosing drive and check
whether the dosing piston is connected to
the dosing drive. The piston stopper must
be flush with the upper side of the hous-
ing.
￭ Check whether the connection cable is
attached to the dosing drive.
The exchange unit
cannot be attached. The flat stopcock of the
exchange unit is not in the
exchange position. Switch the flat stopcock manually to the
exchange position (lever switch directed to the
right).
The piston rod in the
exchange unit is not in the
right position. Switch the piston rod to the right position.
The exchange unit
cannot be removed
and the LED "Sta-
tus" is flashing
slowly. It is being dosed or filled
and/or the Titrando is not
in the exchange position. Stop the run or carry out a "filling".