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14.1.8 Unlocking the system:
An eighth press on the menu-key in this menu brings you to the "Code" menu. To prevent unau-
thorized access to the settings in the system control, changes to the settings can only be carried
out when the correct code from the Assignment Table that follows is entered and confirmed with
the Enter-key. The unlocking remains active for 5 minutes. Each access via the code is typed
out by the printer (RS 232), complete with date, time and abbreviated code number ("Code
0001" corresponds to code 150, "Code 0002" to code 250 etc.).
The display shows Menu-Punkt F:
Code numbers can be assigned to individual persons according to the Assignment
Table that follows on the next page.
Remove this page from the Operating Instructions and storeit where it is safe from
unauthorized viewing.
Thermo Scientific Barnstead LabTower AFT
Code
Press Enter !
0000
Pure water system
29
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