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•
To modify this value, press the arrow keys▲and▼ until the desired value is displayed.
•
To validate the new value and exit setting mode, press the
8.3.2 Redox
The Redox potential of water is a measurement that is in tight correlation with the concentration of free
Chlorine. However, this correlation is influenced by the following water parameters:
•
pH (when the free Chlorine concentration is fixed, the Redox potential will decrease as the pH increases)
•
temperature (when the free Chlorine concentration is fixed, the Redox potential will decrease as the
temperature rises)
•
stabiliser concentration (when the free Chlorine concentration is fixed, the Redox value will decrease as the
concentration of stabiliser increases)
Therefore, in order to establish the Redox value that should be selected as the set point:
•
bring the pH of the pool to the set point value,
•
adjust the concentration of stabiliser in the pool to the desired value,
•
heat the pool to the desired temperature, and maintain it at this temperature (if the pool is not equipped with
a heating system, simply wait until the water naturally reaches the lowest temperature at which bathers will
use the pool).
•
Next, adjust the concentration of free Chlorine to the desired level.
•
To do this, add Chlorine in successive increments and measure the free Chlorine concentration after each
addition using a photometer that measures free Chlorine concentration with adequate precision and that
has been calibrated at least within the last year.
•
Do this until the desired concentration of free Chlorine has been reached (usually between 0.75 and 1.25
ppm). Check that the pH is still correct, adjust it if necessary.
•
Chlorine may be added either manually using non stabilised liquid Chlorine, or by forcing the electrolyser
on in Turbo mode for decreasing periods of time (see paragraph 8.4) (caution: in Turbo mode, the set point
is not taken into consideration).
•
Once the desired concentration of free Chlorine has been reached, display the Redox potential measured
by EES Pro. This value will be the set point.
The Redox value set point factory setting is 650 mV.
The Redox set point may be modified within the range 550 – 900 mV.
To do this:
•
Press the
button once: the current Redox set point will be displayed.
•
To modify this value, press the arrow keys▲and▼ until the desired value is displayed.
•
To validate the new value and exit setting mode, press the
!
IMPORTANT
An increase of the Redox set point will cause an increase of the free Chlorine
concentration in the pool, while decreasing the Redox set point will entail a decrease of the free
Chlorine concentration.
!
IMPORTANT
The correlation between the Redox potential and the desired free Chlorine concentration
should be re-established:
•
Each year when the pool is reopened, if the pool was winterized
•
if a significant volume of the pool water (more than 1/3) is renewed
•
if a decision to alter the stabiliser concentration is made
To do this you will need a photometer capable of measuring the Chlorine concentration with adequate
precision, and that has been calibrated within the last year; if necessary adjust the concentration by adding
small amounts of Chlorine successively, until the required concentration is reached. Note the Redox
TRAITEMENT DE L'EAU
button twice.
button once.
2021/02 - Indice de révision : E - Code : 29650
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