21
❹ Pool preparati on
4.1 I Water balance
The water used must originate from a supply network compliant with Directi ve 98/83/EC on the quality of water intended
for human consumpti on. To achieve opti mum water treatment, be sure to measure and adjust the values in line with the
following recommendati ons:
4.1.1 Seasonal «restart» analysis
-
Stabiliser (cyanuric acid) (<30 mg/L, ppm):
the stabiliser protects the chlorine against the destructi ve acti on of U.V
light from the sun. Excessive stabiliser levels may block chlorine's disinfecti ng acti on and cause the water to go bad.
-
Metals (Cu, Fe, Mn) (
±
0 mg/L, ppm):
metals aff ect the metal parts of the pool (corrosion phenomena) or may
cause indelible stains.
4.1.2 Monthly analysis
-
TH (10-30°f) or (100 - 300 mg/L CaCO
3
, ppm) :
TH measures the hardness of the water (amount of calcium). This
value may vary signifi cantly depending on locati on.
-
TAC (8-15°f) or (80 -150 mg/L CaCO
3
, ppm) :
TAC measures the total alkalinity of the water. This value is used to
stabilize the pH. It is important to adjust TAC before pH.
4.1.3 Weekly analysis
-
pH (7.0 - 7.4):
the pH level measures the acidity or basicity of the water. A pH level between 7.0 and 7.4 will
preserve the pool equipment
and ensure eff ecti ve disinfecti on.
Below is the Taylor’s watergram method to adjust
the pH value:
Alcalinity of the water
Hardness of the water
: Once the TH is adjusted, indicate its
value.
: Once the TAC is adjusted, indicate its
value.
: Draw a line between the TH value
and the TAC value to fi nd the pH value to
be adjusted.
Taylor’s watergram
-
Free chlorine (0.5 - 2 mg/L or ppm):
this amount of free chlorine ensures that the water is disinfected and
disinfecti ng.
Contact your dealer to determine the type of correcti ve product or automati c regulati ng device to
use to adjust the values.
