Eco-Matics are manufactured in Australia by  Davy Industries (Formally Monarch Industries)  and are sold under the Chloromatic brand world wide.   They produce manual clean and self cleaning salt water chlorinators. 

Salt Levels=  Manual Clean Minimum 4000 to 5000 ppm  /  Self Cleaning Minimum = 4000 to 5000 ppm

 Running at lower levels will damage the cell and may cause damage to the control box.