Operating Manual
Operation instructions Page13-7
as well as the display of the measured values is controlled from the operator panel.
13.3.6 Trouble-shooting
The oxygen probe does not contain user-serviceable parts. Therefore, in case of defects the
probe has to be returned complete and unopened to MBRAUN or the authorized
representative. On request, MBRAUN may offer exchange probes.
Description of Malfunction Possible Solution
The display measuring value comes
very slowly
The sensor is still charged with oxygen
by a
below 10 ppm, whereas it is certain that
the previous operation at high oxygen
real value is much lower (Check,
whether this is
concentrations or long storage in air.
In this
really the case or the display is correct).
case operate the sensor for some
hours in
clean inert atmosphere and it will
come down.
The sensor has a very stable zero-
point, so
before sending the probe for repair
you must
exclude the possibility that e.g.
hydrogen in
ppm-levels is present or was present
in higher
levels.
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