Toc Offset; Problems Changing The Program Language - GE Sievers 500 RL Operation And Maintenance Manual

Chapter 8: Troubleshooting
4. Wait for the TOC Autozero to complete before proceeding.

TOC Offset

At extremely low TOC concentrations, very small changes in water system conditions may make it difficult to
utilize the TOC autozero procedure for the purposes of achieving instrument-to-instrument agreement
consistent with the stated analyzer specifications. If the TOC autozero procedure does not yield acceptable
agreement between multiple instruments, you may utilize the manual TOC zero offset adjustment to adjust the
TOC reading to match a known accurate reference value.
NOTE: adjusting the TOC offset value manually will affect all TOC readings by an amount equal to the amount of
adjustment. This procedure should only be used when all other recommended methods of calibration and
autozero have failed to allow multiple instruments to match within the stated accuracy specifications of the
analyzer.
To set the TOC Offset, follow these steps:
1. If the Analyzer is taking measurements, press the Stop Analysis button.
2. Press the Menu button, select the Maintenance tab and press the Cal/Ver/Validate button.
3. Press the Program Autozero button.
4. Press the Offset button.
5. Use the number keypad to enter a positive or negative number for the offset.
6. Press the Enter button.

Problems Changing the Program Language

When you have multiple languages loaded on your Analyzer, if you change the program language out of your
native language, it is possible that you will not be able to switch back easily since you cannot read the program
menus. If this happens, follow these steps to navigate to the correct menu to change the program language
back to your language:
1. Make sure the Menu screen is displayed. If the Main screen is displayed (it shows the chart of
measurements), press the button at the bottom left corner of the screen.
2. Select the fourth tab from the left (this is the Maintenance tab).
3. Counting from the top, press the fourth button in the left column (Advanced).
4. Press the fourth button in the left column (Advanced Setup).
5. Press the fifth button in the left column (Select Language).
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