1. Before starting the machine: Make sure that the direction of the motor is consistent with the direction indicated by the water pump, and it is strictly forbidden to reverse the damage to the pump;

2. Start up: Turn on the start button of the dissolved air pump. After the motor reaches the rated speed, slowly open the outlet valve of the dissolved air tank on the air flotation device ( air intake floating pool pipeline ) , adjust the outlet pressure of the dissolved air pump to 0.5MPa , and then slowly Close the water inlet regulating valve to make a vacuum appear on the inlet side of the dissolved air pump. When the vacuum pressure gauge at the inlet of the dissolved air pump is 0.01-0.02MPa ( negative pressure ) , open the air inlet regulating valve to make the air intake amount reach the dissolved air pump inlet. 10%-15% of the water flow , at this time the dissolved air pump of the air flotation equipment ( return water ) is 20-30% of the processing capacity of the air flotation tank , and the outlet pressure of the dissolved air pump drops to the normal range. 3. Shutdown: Since the outlet of the dissolved gas pump is equipped with a check valve, there is no need to close the outlet valve of the dissolved gas tank ; press the button to stop the dissolved gas pump, and then close the water inlet valve. If the dissolved air pump is shut down for a long time, the water in the pump body should be emptied to prevent the water pump from freezing and cracking and scaling after the shutdown.

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