What preparations need to be made before using the sand filter in the swimming pool

Preparation work before use of sand filter tank in swimming pool:
1. Before use, check to make sure that the connection objects of the swimming pool filter sand tank and the power supply of the water pump are safely connected;
2. Press down the handle of the control valve and turn it to the "BACKWASH" position (to prevent damage to the seal ring of the switch, the handle must be pressed before turning).
3. Start the water pump (to ensure that the water suction and return pipes are unblocked), the swimming pool filter sand tank can be filled with water in advance, once the water flows into the connected sewage, the pump will continue to run for 4 minutes.
4.turn off the water pump, turn the control valve to the "FILTER filter" position, restart the water pump, and now the sand filter tank in the swimming pool operates normally to filter out the dirt in the pool water.

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