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POOLDENS
COSMOGAS
9.5.3 TAC -Total Alkalinity Certificate
The TAC is the Total Alkalinity: this means the water’s capacity
to resist changes in pH. In other words, it determines the
stability of the pH.
The optimal value of this parameter is around 100 to 140
mg/l. If the TAC is below 80 mg/l, it indicates a very unstable
pH and rather aggressive water. On the other hand, if the
TAC is above 250 mg/l, it indicates a pH that is too stable.
In this case, too, it is not all right, and action must be taken,
constantly dosing with chemical products. Initially do the test
once a week. Once you have found the right stability, you
can do the check once a month. Contact your valued dealer
to buy a suitable kit.
Parameters to check in content of water
Parameters to be checked **
Ideal values
Frequency of check
Free chlorine
From 0.6 to 1.0 mg/l *
Daily
Combined chlorine
Lower than 0.4 mg/l
Daily
pH
From 7.2 to 7.6 pH *
Daily
Cyanuric acid
From 25 to 50 mg/l
Weekly
Total alkalinity
From 100 to 140 mg/l
Monthly
Hardness
From 200 to 400 mg/l CaCo3
(20-40 °F) *
Monthly
* Failing to observe the parameters listed can cause
early breakdown of the heat exchanger and will invalidate
the warranty. Where local regulations in force are more
restrictive, refer to them.
** Make sure you check any other physical or chemical
requirement set by the local regulations in force.
9 - INSTALLATION - Plumbing
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