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Appendix A Help Guide
The Help Guide is a step by step set of instructions for the
DR 3900, for the execution of a stored program or procedure in
accordance with process specifications. The Help Guide is
available for the most used HACH LANGE tests and the Hach
powder pillow reagent tests.
A.1 Display of the Help Guide for stored programs
1. Press Stored Programs in the Main Menu to view an
alphabetical list of stored programs with program numbers.
Highlight the required test and press Start.
2. Press the information icon.
3. The first procedure step according to the selected
test/method will be displayed.
Note: Use the arrow keys to navigate through the next or previous
pages or to the first or last page.
4. Follow the step-by-step descriptions on the screen.
5. If the method requires a timer, press Cancel and then press
the timer icon.
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