Common faults of self-priming pump

① No response after power on. Most of them are caused by short circuit of power plug, power outgoing line and motor winding.
② , difficult to start or unable to start, accompanied by "buzzing" sound. During maintenance, small bamboo can be used to quickly move the fan blade according to the running direction. If the motor runs quickly, it indicates that the starting capacitor or starting winding is damaged. Replace the capacitor with the same capacity or repair the starting winding; If the motor is stuck, it is mostly the mechanical failure of the motor and pump head, such as bearing damage, impeller jamming, etc.
③ The motor can run, but the speed is slow, and the casing is overheated and has a burning smell. Most of them are caused by short circuit of motor winding. The motor shall be disassembled and repaired by welding, jumper, isolation, rewinding and other measures according to the damage.
④ Large noise and vibration during operation. In most cases, the bearing is damaged or the fit between the bearing and the casing is improper. The motor needs to be disassembled for inspection. If the bearing is damaged, it should be replaced; If the bearing runs out of the outer circle, the matching surface of the pump shell can be chiseled; If the bearing runs inside the circle, the worn parts of the motor shaft can be chiseled. If the wear is serious, the method of surfacing first and then turning shall be adopted for repair.
Our self-priming pump products include: ZW Self-priming sewage pump, ZX self-priming (clean water, chemical) pump, zcq stainless steel self-priming magnetic pump, zcq-f fluoroplastic self-priming magnetic pump, ZBF self-priming plastic magnetic pump, fzb fluoroplastic self-priming centrifugal pump, WFB unsealed automatic self-priming pump and CYZ self-priming centrifugal pump

Roots vacuum pump and maintenance of exhaust filter element of treatment of vacuum drop