Metrohm 803 Ti Stand Handbuch Seite 21

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4 Troubleshooting
4.1 Problems
Problem
Solvent is added at
the same time dur-
ing aspiration.
The pump conveys
no liquid.
The solvent flows on
into the titration
vessel after the
addition, without
the add key being
pressed.
803 Ti Stand
Cause
The drying tube is blocked.
The add/aspirate key is not
pressed tightly enough.
The solvent bottle is not set
up correctly.
Remedy
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.
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.
Set the solvent bottle up in such a way that
the liquid level in the bottle is lower than that
in the titration vessel.
4 Troubleshooting
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