NOTES ON CALIBRATION:
If the calibration process is interrupted for whatever reason, the pH-
controller will automatically leave the calibration mode if the intervention of
the user is not detected in a few seconds. In this case, “E1” indication in
green display will appear.
If the pH value detected during the calibration process is very different from
the expected one (e.g., defective electrode, etc.), green display will indicate
“E2”, not allowing calibration.
If the pH measure is unstable during the calibration process, code “E3” will
appear. In addition, the pH-electrode calibration will not be allowed.
6.5 CALIBRATION OF THE ORP ELECTRODE
The calibration frequency of the controller will be determined in each particular application.
Nevertheless, we recommend to make it at least, once a month during the use period of the
pool. The ORP controller has an automatic calibration system for the ORP electrodes based
on the utilisation of a 470 mV reference solution.
PROCEDURE:
IMPORTANT: before closing the by-pass valves, press “STOP” in the Control Panel of the
unit
Extract the ORP electrode from the holder and wash it with tap water.
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