Functional details of common sand tank multi-way valves

Introduction to the function of the multi-directional valve of the sand filter: WINTER——antifreeze, after the pump is stopped, it is used for exhaust. FILTER—normal filtration WASTE—drain directly without filtering CLOSED—close (close the function in the filter) BACKWASH—backwash (discharge the dirt accumulated in the filter). RECIRE - Do not cycle through the filter.

RINSE——After backwashing, the remaining in the water pipe will be left in the water pipe. 1. Backwashing for maintenance of the stainless steel sand tank. If the reading of the pressure gauge on the filter sand tank is higher than 2.5kg or above, it is necessary to backwash the filter sand tank immediately; confirm the need The relevant water pump of the backwash sand tank has stopped running; Adjust the multi-way valve on the filter sand tank to the backwash (Backwash) state; Confirm that the relevant valve on the pipeline is in the correct position; First run the water pump; Check and observe the clean water on the sand tank mirror until the water comes out clean; then turn off the pump. If it is impossible to check the backwash water, the backwash time is generally 3-5 minutes. (Generally 2-3 times a month, such as once a week in peak season) After backwashing, turn off the water pump, adjust the multi-way valve to (RINSE) rinse state, then turn on the water pump to run for 1-2 minutes and then turn off the water pump.

2. Sand tank cleaning After the swimming season is over or before opening in the second year, it is best to use a sand tank cleaning agent to clean the sand tank once, which can prevent the oil produced by the human body from accumulating in the quartz sand for a long time and cause the filter sand to agglomerate , affecting the filtering effect. 3. Replacement and replenishment of quartz sand After three years of use, the general sand cylinder needs to be replaced and supplemented with quartz sand. Because quartz sand will become smaller due to friction after long-term use, and part of it will be washed away during backwashing. If it is not replaced and replenished for a long time, fine sand particles will rush into the swimming pool with the water flow after normal circulation. Due to the reduction of sand, the filter layer is reduced and the water quality is affected.

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