초록 ▼

A process and system are provided for treating fluid. In one illustrative embodiment, the treatment comprises the recharging of a resin bed in a water softener. A flow switch and accumulating timer are actuated when a selected flow rate is detected. The accumulating timer is set to a selected elapse

A process and system are provided for treating fluid. In one illustrative embodiment, the treatment comprises the recharging of a resin bed in a water softener. A flow switch and accumulating timer are actuated when a selected flow rate is detected. The accumulating timer is set to a selected elapsed time. A chronological timer is also provided and is set for a selected time of day to recharge the resin bed. A reserve brine capacity is provided by delivering a selected amount of water to a brine tank at predetermined elapsed time intervals of the accumulating timer. The resin bed is recharged when both a selected elapsed time of the accumulating timer has occurred and it is the selected time of day.

대표청구항 ▼

In a process for treating fluid with a water softening material or a filtering material, a process for rejuvenating the water softening material or the filtering material in the absence of a flow meter, including the steps of: providing a flow switch which will be actuated only when a selected flow

In a process for treating fluid with a water softening material or a filtering material, a process for rejuvenating the water softening material or the filtering material in the absence of a flow meter, including the steps of: providing a flow switch which will be actuated only when a selected flow rate of the fluid is detected; providing a first timer; coupling the flow switch to the first timer to actuate the first timer only when the flow switch is actuated; determining the elapsed time of the first timer whereby a volume flow measurement is simulated; and rejuvenating the water softening material or the filtering material in response to a signal generated by the first timer when a selected elapsed time has occurred, whereby the use of a flow meter is obviated.