1. The pressure gauge has no pressure
After the booster pump is running, the indicator of the pressure gauge of the dissolved air tank is zero, which means that the booster pump cannot pump water because there is air in the pump. At this time, press the stop button of the booster pump to stop the booster pump Then open the exhaust valve of the booster pump to discharge the air together with the water. Start the booster pump again. If there is still air in the pump, continue the above steps until the air is completely removed and the pressure gauge of the dissolved air tank indicates within the range of 0.35~0.5Mpa. The air flotation device still has not reached the pressure, check whether there are other places for air leakage.
2. No bubbles in the reaction zone
If after 30 minutes of operation of the booster pump, there is no large number of tiny bubbles coming up from the reaction area of the air flotation device, it means that the suction part of the ejector fails to inhale air. The main reasons are as follows:
(1) The ejector is blocked. Disassemble the injector, check the adjusting ball valve of the injector, and clear out the debris if it is blocked.
(2) The intake air volume is too small. Slowly adjust the regulating ball valve of the air intake ejector, and touch the air suction port with your hands to feel whether there is gas being inhaled, and repeatedly adjust the ball valve of the "intake ejector" to keep the pressure of the dissolved air tank between 0.35~0.5Mpa During this period, gas is inhaled from the air suction port. Be careful not to inhale too much air, otherwise too much air will enter the booster pump and the water will not be pumped. The pressure of the dissolved gas tank drops.
3. The surface of the scum is not flat, large bubbles appear locally or the water flow is unstable
Possibly the releaser is clogged. Remove the releaser of the air flotation device, check whether the releaser is blocked, and if it is blocked, remove the sundries in the releaser.
