Metrohm 796 Titroprocessor User Manual
Page 261
12
12. . Troubleshooting
Troubleshooting
796 Titroprocessor, Instructions for use
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SYSTEM
SYSTEM 1:
Execution not possible while measuring
The selected function cannot be carried out while a method is running. Wait
until the method has ended.
SYSTEM 2:
Measuring start inhibited at this state
It is not possible to start a method while alterations are being carried out in
the method editor at the same time. Close the method editor.
TITRATION
TITRATION 1:
dosing drive not responding
The connection to the selected dosing drive has been interrupted during the
titration. Stop the determination, switch off the Titroprocessor and reconnect
the dosing drive. Switch the Titroprocessor on again.
TITRATION 2:
A/D converter error
The analog/digital converter of the sensor interface is faulty. Please contact
the service department of your local Metrohm agency.
TITRATION 3:
measuring point list overflow
More than 1000 measuring points have been recorded. An evaluation of the
further measuring points is not possible. Correct the control parameters of
the titration, see page 137 (DET), 145 (MET), 152 (SET), 159 (KFT), or 176
(MEAS).
TITRATION 4:
end-point list overflow
More than 9 equivalence points have been found. Further equivalence
points cannot be evaluated. Optimize the recognition parameters and, if
necessary, the control parameters of the titration, see page 139.
TITRATION 5:
max. number of measuring points reached
More than 1000 measuring points have been recorded. An evaluation of the
further measuring points is not possible. Correct the control parameters of
the titration, see page 137 (DET), 145 (MET), 152 (SET), 159 (KFT), or 176
(MEAS).
TITRATION 6:
end-point already reached
The set target end-point has already been reached at the start of the titra-
tion. An attempt may have been made to retitrate a sample which has al-
ready been titrated.
TITRATION 7:
no end-point set
No set target end-point has been entered for an end-point titration (SET,
KFT, SEC, KFC). Add the set target end-point to the method.