1. First, find out whether the motor burns the bearing (mechanical fault) or the coil (electrical fault).
If it is the fault of burning coil, it is mainly caused by overcurrent, sometimes too high or too low voltage will also cause the coil to heat and short circuit, so check that the voltage when running is too different from the rated voltage.There may be several reasons for over-current short-circuiting:
A. the equipment is overloaded to make the motor run for a long time at rated or over rated current. In particular, the starting current of the motor is 3-5 times that of the rated current. Therefore, we should try to avoid running with load or full load when starting the equipment (mainly depending on the matching allowance of rated current and normal operating current of motor).
B, the motor works in a wet working environment. The insulation of the coils should be checked before the motor starts. The insulation requirements of different voltage grades are also different. May refer to the relevant national standard inspection. In the motor operation process should pay attention to the electrical machinery waterproof and moisture-proof.
C, machine mechanical failure caused by overload of the motor, excessive current and burning coil.
D, motor heat dissipation problem. The general motor coils are air-cooled shell, submersible is water-cooled shell. Large motors are mostly air-air heat exchanger, air-water heat exchanger cooling. If the cooling water (air) is broken. Cause the coil not to dissipate heat, may burn the coil.
2. The actual use of the lift is lower than the nameplate head too much;The centrifugal head is used to overcome the height and resistance. When the high head works at the high head, its flow rate is the flow rate at the design point, and if it works at the low head, the equivalent outlet resistance is reduced. The centrifugal flow rate will increase, the motor will overload, excessive to a certain extent will destroy the motor.For example, a water supply unit has a lift of 50 meters and a flow rate of 50 cubic meters per hour. When it supplies water to a height of 50 meters, its flow rate is 50 cubic meters per hour, and when it supplies water to a height of 40 meters. Its height and resistance reduce its flow rate to 80-90 cubic meters / hour or more, when the motor will heat or burn.
3. Water works too long without water.
4. Motor damage can be caused by starting with load.
Jiangxi Gelaili pump industry co.,ltd produce centrifugal water pump,we have CDL,CDLF series,CHL,CHLF series stainless steel electric pump,can be used as ro booster pump, shower pump,fire pump,coolant pump,aquarium water pump and so on,we also supply cast iron pump,they are WQ series dewatering pumps,dirty water pump and GD series pipeline pump.
Gelaili pump industry co.,ltd supplies you competitive price and high quality products.
If it is the fault of burning coil, it is mainly caused by overcurrent, sometimes too high or too low voltage will also cause the coil to heat and short circuit, so check that the voltage when running is too different from the rated voltage.There may be several reasons for over-current short-circuiting:
A. the equipment is overloaded to make the motor run for a long time at rated or over rated current. In particular, the starting current of the motor is 3-5 times that of the rated current. Therefore, we should try to avoid running with load or full load when starting the equipment (mainly depending on the matching allowance of rated current and normal operating current of motor).
B, the motor works in a wet working environment. The insulation of the coils should be checked before the motor starts. The insulation requirements of different voltage grades are also different. May refer to the relevant national standard inspection. In the motor operation process should pay attention to the electrical machinery waterproof and moisture-proof.
C, machine mechanical failure caused by overload of the motor, excessive current and burning coil.
D, motor heat dissipation problem. The general motor coils are air-cooled shell, submersible is water-cooled shell. Large motors are mostly air-air heat exchanger, air-water heat exchanger cooling. If the cooling water (air) is broken. Cause the coil not to dissipate heat, may burn the coil.
2. The actual use of the lift is lower than the nameplate head too much;The centrifugal head is used to overcome the height and resistance. When the high head works at the high head, its flow rate is the flow rate at the design point, and if it works at the low head, the equivalent outlet resistance is reduced. The centrifugal flow rate will increase, the motor will overload, excessive to a certain extent will destroy the motor.For example, a water supply unit has a lift of 50 meters and a flow rate of 50 cubic meters per hour. When it supplies water to a height of 50 meters, its flow rate is 50 cubic meters per hour, and when it supplies water to a height of 40 meters. Its height and resistance reduce its flow rate to 80-90 cubic meters / hour or more, when the motor will heat or burn.
3. Water works too long without water.
4. Motor damage can be caused by starting with load.
Jiangxi Gelaili pump industry co.,ltd produce centrifugal water pump,we have CDL,CDLF series,CHL,CHLF series stainless steel electric pump,can be used as ro booster pump, shower pump,fire pump,coolant pump,aquarium water pump and so on,we also supply cast iron pump,they are WQ series dewatering pumps,dirty water pump and GD series pipeline pump.
Gelaili pump industry co.,ltd supplies you competitive price and high quality products.
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