Other Factors Likely To Stop Production; Spring Mode; Maintenance; Cleaning The Cell - Davey ProMatic Mode D'emploi

5.5 Other Factors likely to Stop Production

Calcium Scale Build-up on Cell
If the cell is scaled, this may well stop the production of chlorine in order to protect the unit, as scale will cause
the unit to heat up. Not only that, but a cell encrusted with scale will wear out more quickly than a clean cell.
Cold Water
If the water is too cold (below 20ºC), production will drop (switch the unit to "Spring mode").
Worn Out Cell
The cell will eventually wear out and chlorine production will decrease. This can be offset by adding salt to the
pool, with the unit set to winter mode. However, there will come a time when, even with increased salinity and in
winter mode, production will be insufficient and the cell will have to be replaced.

5.6 Spring Mode

When the temperature of the water drops (to below 20°C), the unit will produce less chlorine, which may
activate the low salinity protection system. To prevent this, select "SPRING MODE" (off season) as soon as
the temperature of the water falls too low. Production will be reduced by 15% - from 100% to 85% - and the
"SPRING MODE" indicator will come on.
The unit should not be in Spring mode during summer as it reduces production and alters the
setting of the protective system.
The unit should be OFF if the temperature of the water does not exceed 15°C.

6. MAINTENANCE

There are three essential points to monitor:
The cleanliness of the cell (no white deposits)
•
The salt levels in the water
•
The water balance (pH).
•

6.1 Cleaning the Cell

Mineral salts and calcium are deposited on the electrodes and in the tube during the process of electrolysis. These
deposits can impede flow in the cell and reduce chlorine production by damaging the unit. This means that it is
absolutely essential to check the cell regularly and clean it whenever necessary. The speed at which these deposits
can form varies from one pool to another, and depends on the following factors:
Water hardness
•
Water temperature
•
Water pH
•
The use of chlorinated lime
•
So please check the cell at regular intervals to see if there are any white deposits on the electrodes. With the right water
balance you will need to clean the cell far less often.
To reduce cell scaling, put product designed to lower the pH into the skimmer while the filter pump is working. This will
clean the cell (if it is not too dirty) and slightly lower the pH, which should be maintained at around 7.2.
If the cell is very dirty (white deposit clearly visible on the cell screen), clean it. To do this, stop the pump, close any
open isolating valves, undo the nut and remove the electrodes from their housing. For the 50gm cell, undo nuts and
remove from the pipe line.
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