Technicalinst. guide
Limpido XC2
v4.0
At 35°C the maximum salt level is therefore changed from 5g/l to 3.9g/l.
5.3. TAS / TH check
It is recommended when installing to ask a specialist to test the pool water's TAS (Total Alkaline
strength) and/or TH (Total Hardness). These two measurements are usually quite close and are most
often expressed in French degrees (°F). If the TAS and TH are different, use the mean value of the
two measurements. It is important to highlight that very soft water (TH <10°F) has the advantage
of preventing scale deposits, but can also be aggressive, depending on the pH and TAS.
At the other end of the scale, very hard water (TH>35°F) will cause scale deposits on the installation.
It is therefore recommended to correct the TAS and TH using the appropriate chemicals. Contact
your pool builder for more details.
5.4. pH checks
pH, or potential Hydrogen, measures the acidity of the water. Its value is between 0 and 14. A
solution with a pH of 7 is neutral. If the pH is below 7 the solution is acid, and if it is above 7 it is
basic (or alkaline). For the comfort of bathers, effective treatment and reliability of the installation,
the swimming pool water's pH must be kept at about 7.2. However, as the ideal pH for a pool
depends on all the elements used (coating, materials, etc.) in the pool, please check the pool builder's
recommendations. When the pH goes up from 7.2 to 8.2, the percentage of active chlorine passes
from 70% to 20%.
For more effective treatment it is essential to keep the water's pH within the range of ideal values
defined by your pool builder (see manuals).
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