| 摘要 |
A water softener having two equal sized ion exchangers programmed with a regenerating unit so that one ion exchanger is regenerating while the other ion exchanger provides soft water. The two ion exchangers being so dimensioned that the time for the maximum production of soft water of one ion exchanger corresponds exactly to the time which is required to regenerate the other ion exchanger. The outlet of the regenerating unit is connected to each ion exchanger to give impulses to a program control unit to control the cycling of the water softener.
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