Compu Pool CPSC Series Manual 8
6.2.5 Do not use Rock salt. Insoluble impurities mixed with the rock salt can shorten the
life of the unit.
6.3 Salt Level
6.3.1 The Compu Pool CPSC Series chlorinator can work with a broad salinity range,
from a minimum of 3000 ppm (parts per million), up to 6000 ppm. However, the
ideal level for operation is 3500 ppm. To achieve this level of salinity, add 30 lbs. of
salt for every 1000 gallons of water. If you are unsure of the number of gallons in
your pool, double-check with the equations below.
6.3.2 The ideal salt level is 3500 ppm. If the salt level is low, determine the number of
gallons in the pool and add salt according to the chart below. A low salt level will
reduce efficiency of the chlorinator and result in low chlorine production. A high salt
level can cause a salty taste to your pool. In addition, operating the unit outside the
recommended salt range will rapidly reduce the longevity of the cell. The salt in
your pool/spa is constantly recycled and the loss of salt throughout the swimming
season should be small. This loss is due primarily to the addition of extra water to
replace water lost from splashing, backwashing, and draining (because of rain).
Salt is not lost due to evaporation.
6.3.3 If salt content is too high you will need to reduce the level of water in your pool/spa
and refill the pool/spa with fresh water that has not been diluted with salt.
6.3.4 To initially start a pool with the correct amount of salt, add salt to the pool at a rate
of 0.03 pounds of salt for every 1 gallon of water.
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