Edition 03/2022 - ACE – Technical documentation - page 8
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WATER SOFTENERS
➢ When the mains water has a high hardness (>10°TH or >4 °KH), it is recommended:
o To use a water treatment
o To regularly regenerate the filters.
➢ What is the total Hardness of the water?
o This is the amount of calcium and magnesium ions in the water.
o These ions are partly responsible for limestone formation.
o It is measured with the test strip provided with the machine.
o The unit of measurement is the ° French (° TH) or the ° German (° dH).
➢ What is the Karbonat Hardness of the water?
o This is the amount of Carbonate Calcium ions and Carbonate Magnesium ions in the water.
o These ions are completely responsible for limestone formation.
o It is measured with chemical dropper testers.
o The unit of measurement is ° Carbonate (°KH)
There are 2 types of water treatments:
➢ Saltwater softeners
o They treat the total water hardness (°TH)
o By an exchange of sodium ions with calcium and magnesium ions.
o They require periodic regeneration of the resins by the user.
o To use when the water hardness is > à 10°TH or > 5 °GH.
➢ Resins filters:
o They treat the Carbonat hardness water (°KH)
o By fixing carbonate ions on the resins.
o Often fitted with microfiltration and carbon filtration.
o To use when the Carbonat Hardness is > à 6°KH.
o Highly recommended by the manufacturer:
▪ The machines are equipped with suitable protection in accordance with flowrate and
the water encountered.
▪ The changing cartridges is carried out by the technical service, at intervals to be
determined.
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