6.4. pH-ELECTRODE CALIBRATION
The recalibration frequency of the unit will have to be determined in each particular
application. However, we recommend carrying out it at least once a month during the period
of use of the swimming pool. The integrated pH-controller has two calibration modes of the
pH-electrode: “FAST” and “STANDARD”.
6.4.1. “FAST” MODE
“FAST” MODE allows the calibration of the pH-electrode when there are small reading
deviations with no need to extract the electrode from the installation or to use calibration
solutions.
IMPORTANT: before closing the by-pass valves, press “STOP” in the Control Panel of the
unit.
PROCEDURE:
Be sure the point of insertion of the pH-electrode is flooded, and the pump is in
recirculation.
Using a pH-test kit, measure the water pH of the swimming pool. For a suitable pH
measurement, we recommend using a pH portable meter, or another similar device
Press “CAL” key for 5 seconds approx. The pH-DISPLAY (green colour) will be turned-off,
and the SETPOINT display (red colour) indicates “7.0” blinking.
Keep the “SET” key pressed until the pH-value previously measured in the water with the
pH-test kit appears. Once reached, loosen and press “CAL” key. If no error has been
detected, the system will have been calibrated.
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