After the top-out sand tank filter has been used for a period of time, the accumulated dirt hinders the water flow and weakens it. At this time, it is necessary to clean the filter and turn the control valve to"BACKWASH backwash"Position, this is the water flow becomes the reverse direction flow, the water flow directly reaches the bottom of the filter cavity, and after the sand layer recoils up, the previously trapped dirt and residue are washed up and discharged from the sewage outlet. After flushing, the control valve should be turned to"rinse"position, turn on the water pump to remove the dirt in the sewage pipe, and then hit the"FILTER"position, restarting normal filtering. Function description of the multi-choice valve for the top-out sand tank filter 1. FILTER filtration: normally filter and clean the pool water. 2. BACKWASH backwash: discharge the dirt accumulated in the filter.
3. RINSE flushing: remove the dirt in the sewage pipe. 4. RECIRCULATE cycle: water circulation without filter. 5. WASTE sewage discharge: direct sewage discharge without filtering.
6. CLOSED: Close the function in the filter. 7. SERVICE maintenance: to remove the horizontal pin of the handle during maintenance. (11/2 only''Multiple choice valve) 8. WINTERIZE cold protection: prevent damage to the main body of the filter when the temperature is too low.
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