Manual EVoBASIC v.7 72 / 80
the measured value of pH7. After 60 seconds, clean the probe and
immerse it in the pH4 standard solution and press OK. Wait 60 seconds;
the display indicates the measured value of pH4.
At the end of the 60 seconds, the message “Calibration OK” will appear.
Press “OK”. If an error message appears, it may be due to a dirty (see
maintenance) or defective probe, contaminated standard solutions or a
bad connection.
If you have entered the calibration program by mistake, exit it by
pressing “OK” several times. The error message appears, and the
previous calibration is not altered.
4.1.6.5- Switching the pH adjustment on and off
To switch off or start-up the pH control again stopping the acid pump,
access the main menu, select "pH" in the last line. In the pH menu select
the bottom line. By pressing "OK", it alternatively passes from "pH ON"
to "pH OFF".
When the pH control is off, the 3rd line of the screen displaying the
parameters indicates "pH OFF".
4.1.6.6- Priming the pump.
Once the acid pump has been installed, it should be primed to eliminate
the installation air.
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