The JustChlor Chlorinator uses electrolysis to sanitise your pool’s water. This simple process is completed by saltwater passing through an electrolytic cell, converting chloride in the water into chlorine. The J200 Self Cleaning Chlorinator is designed to operate on a reverse polarity process (bidirectional), this unit utilises the main pump timer to facilitate the switching process. The unit recharges its polarity system when turned off and operates in the reverse direction on the next cycle – shedding any calcium build up (white chalky deposit) from one set of electrode plates to the next. This unit is suitable for pools up to 75,000 litres.