Zodiac pH Link - I Balancing the Water

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4.2 I Balancing the water
The water used must originate from a supply network compliant with Direcve 98/83/EC on the quality of water intended
for human consumpon. In order for the water to be treated opmally, carry out measurements and adjust the values
in accordance with the following recommendaons:
4.2.1 Seasonal analyses in "preparaon for re-use"
- Stabiliser (cyanuric acid) (<30 mg/L, ppm): the stabiliser protects chlorine from the destrucve power of the sun's
U.V. rays. Excessive stabiliser can block the disinfecng power of chlorine and turn the water turbid.
- Metals (Cu, Fe, Mn) (± 0 mg/L, ppm): metals damage the metallic parts of the pool (corrosion phenomenon) or
can cause permanent stains.
4.2.2 Monthly analyses
- TH (10-30°f) or (100 - 300 mg/L CaCO
3
, ppm): the TH measures the calcium hardness (quanty of calcium
carbonate), and this value can vary signicantly depending on the geographical region concerned.
- TA (8-15°f) or (80 -150 mg/L CaCO
3
, ppm): the TA measures the water alkalinity, and this value allows the pH to be
stabilised. It is important that the TA is adjusted before the pH.
4.2.3 Weekly analyses
- pH (7.0 - 7.4): the pH measures the acidity or alkalinity of the water. A pH in the range 7.0 to 7.4 helps to preserve
the pool equipment and maintain eecve disinfecon. Taylor's balance method, as shown below, is used to
adjust the pH value:
: Mark the value of the TH aer
adjustment.
: Mark the value of the TA aer
adjustment.
: Draw a line between the TH value
and the TA value to determine the pH
value to be adjusted.
Taylor's balance
- Free chlorine (0.5 - 2 mg/L or ppm): this quanty of free chlorine makes the water both disinfected and disinfecng.
Contact your retailer to determine the type of corrector product or automac control appliance to
be used to adjust the values.
EN