The main reasons for the loud noise of the air pump motor are: ① The coupler is damaged. The reason for its formation is: due to the damage of the coupling pad (ring) and not being replaced in time, the coupling screw is loose or the fixed key is loose and the fixed key is not fastened in time. The troubleshooting method is: when the coupling rubber pad (ring) is damaged and the sound is abnormal, the rubber pad (ring) should be replaced in time. If the screws are loose, they should be tightened or fixed in time. If it is easier to loosen after use, an improved method can be used to deal with it. The method is: first put a flat washer and a spring washer on the screw rod in turn, then tighten a screw cap, then tighten the second screw cap, and then take two corresponding wrenches to clamp a screw cap for further Fasten. If the screw rod has enough length, you can also add a suitable spring pad between the caps, and the effect will be better. The improved use condition is good, and the use period and overhaul period can be extended. ②The main cause of noise when the motor is lack of phase or the three-phase voltage is severely unbalanced is: vibration caused by the uneven magnetic force on the motor rotor. The troubleshooting method is: check the cause of the lack of phase, if it is caused by the main power supply, it should be repaired or work after the power supply is normal. When the three-phase voltage is unbalanced, check whether the wire head is oxidized. If the wire head is oxidized, the oxide should be removed or cut and reconnected. If the power is unevenly distributed, the load on each phase wire should be basically the same. Ways to change lines or adjust. If there is a problem with the total power supply, the cause should be found out and work after it returns to normal.
