METHOD OF CONTROLLING REGENERATION OF FILTER MATERIAL FOR BATH HOT WATER SUPPLIER

摘要

PROBLEM TO BE SOLVED: To prevent the outflow of filter material arranged in a filtering vessel. SOLUTION: Each kind of sediment on the surface of the layer of filter material 13 is peeled off gradually and air mixing and staying in the layer of the filter material 13 is floated gradually by operating a circulation pump for a short time several times. This equalizes the water passage through the filter material 13, and prevents the winding up of the filter material 13, and does away with the outflow of the filter material 13 from the filtering vessel 12. Moreover, this can prevent the water leakage caused by the bite of a switch- over valve D1 and the drop of cleaning capacity caused by the outflow of the filter material 13.