Metrohm 796 Titroprocessor - Manual (Page 247)

12 12. . Troubleshooting Troubleshooting
796 Titroprocessor, Instructions for use 241 241
DOSING 21: XX busy or not corresponding settings
Dosing drive XX is not answering at the moment. Wait until it is ready again
or, if necessary, switch the Titroprocessor off and then on again.
DOSING 22: XX already locked
• The dosing drive to be accessed is currently being used by a running
determination. Wait until this has been completed.
• A running method is trying to access a dosing drive which is currently
occupied with a manual operation. This interrupts the determination
('HOLD'). As soon as the dosing drive involved is again available the de-
termination can be resumed by pressing the <HOLD / CONT> key.
DOSING 23: XX not present, check dosing drive
Dosing drive XX is not connected. Switch off the Titroprocessor, connect up
the dosing drive and switch on again. Dosing drives are only recognized
correctly when the instrument is started up.
DOSING 24: XX check exchange unit
The exchange unit or dosing unit of dosing drive XX is not attached or is not
attached correctly.
DOSING 25: XX not corr. settings for DEVICES and METHOD
In the running method entries for the reagent are laid down which do not
coincide with the current entries on the dialog page 'Devices & Manual
Control'. Check whether the correct reagent is being used with the selected
dosing drive. Bring the entries up to date if necessary (<MAN CONTROL>
key). The name of the reagent can be selected from a suggestion list (with
space bar or [Select] softkey). If the comparison of the reagent names is not
required this can be switched off by completely deleting the entry.
DOSING 26: XX no power
Dosing drive XX is overloaded. Check the buret unit.
DOSING 27: XX not ready, probably filling
The dosing drive is currently occupied. Wait until it is free again.
DOSING 28: XX unexpected error, code XXXX
A fault has occurred which cannot be specified more closely. Check the
dosing drive and the dosing drive connections. If the fault cannot be reme-
died please contact the service department of your local Metrohm agency
and tell them the error code.
DOSING 29: XX no tubing set
No buret unit with tubing parameters has been entered for a PREP or
EMPTY command. Check the method.