Patent ID: 7966097

Claim:
A system for scheduling regeneration of a resin bed of a water softener based upon the remaining available exchange capacity of the resin bed, the system comprising: a microcomputer control configured to, determine when a regeneration of the resin bed should be scheduled, the microprocessor further configured to, i) determine the average amount of exchange capacity used and variation from the average amount of exchange capacity used on each day of the week by monitoring and recording on a daily basis the quantity of water of a predetermined hardness passing through the softener, and ii) schedule a regeneration when the amount of exchange capacity of the resin bed used since the most recent regeneration plus the variation from the average amount of exchange capacity used on the next day of the week plus the average amount of exchange capacity of the resin bed used on the next day of the week is greater than the remaining available exchange capacity of the resin bed.