Water Analysis And Balance; Dissolution Of The Salt; Stabiliser; Total Alkalinity - Davey ProMatic Manual De Instalación Y De Mantenimiento

4. WATER ANALYSIS AND BALANCE

Before you switch the unit on, carry out the following steps:

4.1 Dissolution of the Salt

The salt is what makes the chlorinator work so insufficient salt means insufficient chlorine production. Running at low
salt can also lead to damage of your cell and reduced cell life.
The minimum quantity of salt required for the chlorinator to work effectively is 0.4% (4 g/L ).
Ideally salt levels should be around 0.45% (4,5 g/L) and no more than 0.7% (7 g/L)
When you put the unit into operation for the very first time, pour the required amount of salt into the diving area, ideally
near the drain hole. Operate the filter circuit with suction applied only via the drain hole so as to dissolve the salt faster.

4.2 Stabiliser

A stabiliser has to be used so as to prevent rapid deterioration of the chlorine by the ultraviolet rays. The level of
concentration should be maintained at 30 to 50 ppm. The stabiliser should only be put in once a year, when starting up
the equipment again. Too high a concentration, i.e. in excess of 100 ppm, could have the reverse effect.
4.3 pH
The right pH is essential to ensure the right water balance. The wrong pH can damage the cell. The effectiveness of the
chlorine also depends on the pH, which should be maintained at around 7.2 and in any event under 7.6.

4.4 Total Alkalinity

pH is not be confused with total alkalinity, which governs the speed and changeability of the pH. It is expressed in ppm,
with the ideal concentration ranging from 80 to 150 ppm. To measure alkalinity, use a suitable analytical instrument.
Low alkalinity can render the pH unstable, whilst excessive alkalinity can lead to high pH values.
For the unit to work efficiently and have a long service life, please ensure the pool water is balanced correctly, and this
can only be obtained by following the above instructions.
Adding other products may have harmful effects.
Additives containing copper or calcium carbonate are especially inadvisable: they can cause large deposits to form on
the cell, and invalidate the guarantee.
WARNING:
Do not add Hydrogen Peroxide to pool water or through swimming pool hydraulic or sanitiser
system. Use of Hydrogen Peroxide will void warranty on Davey products.

4.5 Insufficient Salt

If the salinity of the water is too low, this will cause the cell to oxidise more quickly and therefore reduce the life of the cell.
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