Saving System Settings; Programming The Toc Autozero - GE Sievers 900 Series Operation And Maintenance Manual

4. Press the Contrast Adjust button and use the keypad to change the contrast level of the
display. Press Enter to change the contrast to the new value, and then push Menu to exit.

Saving System Settings

You can archive settings to the USB port and restore them at a later time. This feature provides a
backup mechanism in the event that you need to return to previous settings, including calibration
and user-configurable settings. Save your Analyzer's system settings as follows:
1. Select the Maintenance tab.
2. Press the Advanced button.
3. Press the USB I/O button. Make sure that the USB flash memory drive is attached to the
USB port.
4. Press the Save System button.
To use the restore feature, be sure that the USB flash memory drive containing the previously
exported data is attached to the Analyzer's USB port, repeat Steps 1 through 3 above, and select
Restore System.

Programming the TOC Autozero

If your application requires you to perform on-line TOC measurements, you may want to set the
Analyzer to automatically perform a TOC Autozero at a specific interval. The TOC Autozero is
recommended only if the TOC concentration in the sample stream is 50 ppb or less. The TOC
Autozero function is described in more detail on page 140.
1. If the Analyzer is taking measurements, press the Stop Analysis button.
2. Press the Menu button, select the Maintenance tab, and press the Calibrate button.
3. Press the Program Autozero button.
4. Press the State button and select On.
5. Press the Frequency button and use the number keypad to enter how often you want to
program the TOC Autozero function to work. The Frequency is measured in days; if you
enter 7 the TOC Autozero will run every week starting one week from the date you specify.
For example, if you enter 14, it will run every two weeks.
6. Use the date and time buttons to specify the start date and time for the TOC Autozero.
GE Analytical Instruments ©2009 117 of 236 DLM 90488-01 Rev. A