From 20° of total hardness (TH), water is considered as hard.
This is often the case in France where two thirds of the ground is limestone based. Hard water causes considerable scaling of the chlorination cell. This implies regular checks and tedious cleaning.
To overcome this problem, POOL TECHNOLOGIE has equipped all of its chlorinators with polarity reversal.
Polarity inversion allows to clean automatically the chlorination cell (every four or six hours depending on the model). POOL TECHNOLOGIE has taken one step further: to adapt the regularity of polarity reversal to the water in your swimming pool,some models feature an adjustable polarity reversal frequency from 0 to 24 hours. The harder the water,the higher the inversion frequency must be.
The greater the hardness of the water, the greater the reversal frequency should be. The adjustment must be done carefully: the reversal frequency has an affect on the cell lifespan.