Common micro-electric self-priming pump failure:
1. Motor section (1) No response after turning on the power. Most of the power plug, power leads and motor windings open circuit.
(2) difficult to start or can not start, and accompanied by "buzzing" sound. Overhaul can be used when the direction of small bamboo quickly move the fan, if the motor is running quickly, that is starting capacitor or winding damage, should replace the same capacity capacitor or repair winding; if the motor card, mostly motor and pump head Mechanical failure, such as bearing damage, impeller stuck.
(3) the motor can run, but the speed is slow, and the chassis overheating, burning smell. Most of the motor windings caused by a short circuit, the motor should be disassembled as the case of damage by welding, jumper, isolation, rewinding and other measures to repair.
(4) noise during operation, vibration. Most of the bearings are damaged or improperly matched with the bearing housing, the need to open the motor check, if the bearing damage should be replaced; if the bearing "run outside the circle", the casing with the pump can be used to deal with Kui flowers; Round ", the wear parts of the motor shaft can be used to deal with Kui, serious wear and tear, the use of the first method of surfacing surfacing repair.
2. Pump head part (1) the motor is running normally but the water is little or no water. This situation should first check the pump seal, check should first unplug the power plug, hand plug the suction port, the pump filled with water, the mouth stuck in the mouth forced inward blowing, observe whether the pump head leaks, leaking Where is the seal damage. Common parts of the faulty suction pad, outlet mat, impeller pad, maintenance should be replaced. If there is no full water phenomenon, mostly impeller damage, between the water chamber and the water chamber between the water within the septum wear, pump head water separated by grinding flat, impeller and the pump housing to increase the gap, etc., should replace the impeller and pump housing . Replace the wheel should pay attention to the complete removal of residual copper pump blades, so as not to damage the new impeller again.
(2) chassis charged. Most of the water seal damage, water penetration into the motor shaft through the motor so that the motor insulation performance deterioration. Can be replaced by water seal, drying motor and other methods of repair. It should be noted that because of long-term water contact with the pump and open-air work, easily damp caused by deterioration of insulation properties, in order to ensure personal safety, electric self-priming pump should be reliably grounded; winter should be used to drain the case of water and keep warm To prevent freezing the case.
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