Metrohm 873 Biodiesel Rancimat Manual User Manual
Page 168
6.1 Problems
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160
￭￭￭￭￭￭￭￭
873 Biodiesel Rancimat
Problem
Cause
Remedy
No air flow can be
detected in the measur-
ing vessel (it does not
bubble), although an
air flow can be dis-
cerned in the reaction
vessel.
The connection is blocked.
￭
Check tubing connector (5-
reaction vessel cover for blockages
and, if necessary, clean.
￭
Check Iso-Versinic
®
) for
blockages and, if necessary, clean.
￭
) and
) on the measuring
vessel cover for blockages and, if nec-
essary, clean.
The connection is leaking.
Check Iso-Versinic
®
) for leak-
ages and, if necessary, replace.
The reaction vessel cover
(5-
) is not mounted correctly
or is too loose.
￭
If the reaction vessel cover is oblique
or not completely mounted, press
down as far as the limit stop.
￭
If the reaction vessel cover is loose on
the reaction vessel despite correct
assembly, the cover has to be
replaced.
The connection is wrongly con-
nected.
￭
) is
mounted to the air supply at the open-
ing In (5-
) of the measuring vessel
cover.
￭
Ensure that the Iso-Versinic
®
tubing
adapter, which is mounted in the
opening In (5-
).
￭
Ensure that the reaction vessel is con-
nected to the measuring vessel
belonging to the corresponding
measuring place.
The conductivity is dis-
played in the upper part
of the Live window dur-
ing startup.
The conductivity of the water
used is too high.
Check the conductivity of the water used
and, if necessary, use deionized water
from another source.
The conductivity measuring
cell is contaminated.
Check cell constant of the measuring cell.
The cell constant should be between 1.0
and 1.2. If this is not the case, the meas-
uring cell must be cleaned (see Chapter
4.6.4, page 80).