IKA C 5000 control Package 2/12 - Manual (Page 76)

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IKA  -WERKE C 5000 control/duo-control Ver. 10 04.07
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The decomposition vessel is vented and the measurement cell cover opens.
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As soon as the message %RPE n appears, remove the decomposition vessel and
open it.
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Check the crucible for combustion residue. Both the cotton thread and the fuel sam-
ple must have been burned completely. If there are any signs of incomplete com-
bustion, the experiment must be repeated.
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It is of fundamental importance for the decomposition vessel to be clean and dry.
Contamination can change the heat capacity of the decomposition vessel and result
in imprecise measurement results. After each combustion experiment, the inner
walls of the vessel, the inner fittings (supports, electrodes, etc.) and the combustion
crucible (inside and outside) must be thoroughly cleaned.
In most cases, condensation must simply be removed from the inner walls of the
vessel and the inner fittings. It is sufficient to carefully wipe off the parts with an ab-
sorbent cloth that will not leave lint.
If the decomposition vessel cannot be cleaned with the procedure described (for
example because of burned or corroded spots), you should contact the Technical
Service Department.
The combustion residue in the crucible, for example soot or ash, should also be
carefully wiped off with an absorbent cloth that will not leave lint.
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