Shenlong Pump News Center

pump industrys new and pump technology articles

we provide advice of submersible pump installation,submersible pump working,submersible pump troubleshooting,submersible pump stopped and other pump technology articles.

Technology

Home > News > Technology

Use and maintenance of electrical motor

Motor

1.Starting: motor before starting the first mechanical aspects of the inspection should be carried out, such as inspection of the rotating shaft is flexible; bearings should be properly lubricated; fan and the wind cover can not collide, motor base fixed rate, etc.. And then the circuit must be checked, and check whether the lead wire of the motor is connected to the. Some of the outlet box of the motor only two lines, easy to connect to this, some have four lines, then must according to the relevant manual connection, otherwise it will burn out the motor. The thread must be firmly installed in the motor; the best fuse socket, fuse the Ampere Ampere quota quota should be compared with the motor is 10 ~ 25%. Before running the motor, it is best not to carry the load to load test to see if the rotation is normal, whether the steering is in line with the requirements, etc.. Steering of single phase motor. Manufacturers have been connected to the winding, not easy to change. 

When starting the motor 3 to 5 seconds after the start, if more than this time the motor not turn up or not up to 70 to 80% of the rated speed, should be promptly cut off the power supply, check the cause of the problem, do not delay, otherwise easy winding burn. This situation may be too large load; voltage is low. The centrifugal switch does not move, the motor windings have problems, etc.. 
 
2.Operation: the motor with load, the speed is uniform, the sound is moderate, and the heat is appropriate. But should always pay attention to the motor temperature rise, if found serious fever and other adverse symptoms must be pulled to stop running. In most rural areas due to the lower voltage, the fever, although sometimes will not burn winding, but to reduce the service life of the motor. To ensure that the motor is damp proof and well ventilated, the outlet box and capacitor can not be flooded, and there is no mechanical damage. The shelter of the wind can not be blocked, the motor casing should be a good grounding and so on. When the capacitor is damaged and updated, the voltage value of the new capacitor shall not be less than the voltage value of the old capacitor. 
 
3. Maintenance: motor operation for a long time can be open maintenance. To clean up the internal debris dust, fill in the lubricating oil (with calcium sodium base grease 1, etc.), it is best to use a 500 volt meter measuring winding insulation resistance, the normal should be not less than 500 billion ohm. 
 
Attention should be paid when dismantling: 
 
1).The internal connection of the winding, the welding point of the centrifugal switch shall not be mistaken or disconnected, 
 
2).The no Pengpo winding insulation, good protection action gap centrifugal switch, ensure the normal contact action, the spark contact spot, usable fine grinding gently rag. 
 
3).The aluminum shell motor should pay attention to avoid pounding, protect the motor endface stop, do not put the shell, end cap on the heat dissipation ribs damaged, in order to maintain a good heat radiation conditions. Fan blade can not touch the break, the bearing and the shaft must not have mechanical damage, etc.. Motor storage should be placed in a ventilated and dry place.
 

Chat Online & Leave Message

Please send email to : enquiry@apkpump.com
Or leave message in following form.
@
Please briefly tell us your needs (pump type, working envirment)