WATER SOFTENER, METHOD FOR JUDGING DEGREE OF DETERIORATION OF ION EXCHANGE RESIN IN WATER SOFTENER AND METHOD FOR CONTROLLING WATER SOFTENER

摘要

PROBLEM TO BE SOLVED: To provide a water softener capable of judging the degree of deterioration of an ion exchange resin to clear the replacing pieriod of the ion exchange resin, a method for judging the degree of deterioration of the ion exchange resin in the water softener and a method for controlling the water softener. ;SOLUTION: The water softener is equipped with an inlet hardness measuring means for measuring the hardness of water supplied to a resin cylinder filled with the ion exchange resin, a treated water quantity measuring means for measuring the flow rate of treated water after passed through the reins cylinder and a hardness lead detection means for measuring hardness after passage through the resin cylinder to detect a hardness leak.;COPYRIGHT: (C)2001,JPO