Metrohm 803 Ti Stand - Manual (Page 24)

4.1 Problems ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
16 ￭￭￭￭￭￭￭￭ 803 Ti Stand
4 Troubleshooting
4.1 Problems
Problem Cause Remedy
Solvent is added at
the same time dur-
ing aspiration. The drying tube is blocked. ￭ Enlarge the hole of the drying tube cover
to 2 mm at least.
￭ Refill the drying tube, not packing too
tightly, eventually removing some of the
molecular sieve.
The pump conveys
no liquid. The add/aspirate key is not
pressed tightly enough. ￭ It is usually the case that the bottle attach-
ments are not screwed tightly enough to
the reagent and waste bottles.
￭ Check all connections for leak-tightness.
￭ Check whether the 803 Ti Stand has been
set up correctly.
The solvent flows on
into the titration
vessel after the
addition, without
the add key being
pressed. The solvent bottle is not set
up correctly. Set the solvent bottle up in such a way that
the liquid level in the bottle is lower than that
in the titration vessel.