The cause of the fault (1) Grease too much or too little; (2) oil bad quality impurities; (3) bearing journal or end cap mismatch (too loose or too tight); (4) bearing bore eccentric, rub with the shaft; ⑤ motorcover or the bearing cap is not installed level uncorrected; the ⑥ motor load coupling or belt too tight; (7) bearing gap is too large or too small; ⑧ motor shaft bending. Troubleshooting (1) according to the provisions of grease (1/3-2/3 of the volume); (2) replace the clean grease;

A three-phase asynchronous motor does not start after power, only hums. Analysis and examination: three-phase asynchronous motor is powered only hum but not turn the phenomenon, indicating that the power supply is off not one phase melt-off is the motor winding phase circuit, immediately turn off the power and check. The detection result is contact with a poor contact. Repair methods: by adjusting and tuning contactor when closing test in case of no electricity drop-down, three-phase moving co

Y160L-6-11KW motor running current unbalance motor overheating. Analysis of inspection: unstable operation of the aircraft, hand touch the chassis feeling of overheating, the measured load current three-phase unbalanced load throw off, and then measuring the no-load current phase unbalance, measured three-phase winding DC resistance unbalance. The analysis may be winding inter-turn short circuit, to heart pumping check the stator windings, did not identify the part turns overheating and insulat

Energized motor does not turn a buzz l. The cause of the fault (1) stator and rotor winding circuit (phase disconnection) or power a relative loss of power; (2) winding pinout whole story fault termination or winding internal reversed; (3) power circuit contacts loose, the contact resistance; ④ motor load the large rotor stuck; (5) power supply voltage is too low; the ⑥ small motor assembly is too tight or bearing grease perfect; (7) bearing stuck. 2. Troubleshooting (1) identify the breakpo

1.Plus load to check for abnormal vibration and sound, such as abnormal, should stop to check.2.Various parts without local overheating (including wiring).3 plus load all normal speed drops.4. Have abrupt change of the working state of the motor.5.Ministries temperature rise should not exceed the specified value, large motor cooling medium with the motor at the inlet and outlet temperature and cycle oil temperature specified by the manufacturer standards.6 motor vibration shall not exceed the re

1 The type of power supply and voltage are consistent with the motor nameplate power capacity and motor capacity and starting method is appropriate. 2 is appropriate wire gauge, wiring for errors, whether or loose terminals, contact is good. 3 switch and the capacity of the contactor is appropriate, whether the contact is clean, contact is good. 4 Fuses and the rated current of the motor thermal relay capacity matches the thermal relay is reset. 5 Crank flexible string should not exceed the

1.Bearing oil dry, too little lubricant. Bearings should be cleaned and inject new lubricants. 2. The motor bearing leakage Too much oil. General lubricating oil added to two-thirds of the bearing chamber. 3. The belt tension is too tight or the coupling assembly is not in the same line. At this time turning the rotor, to check the belt tension, coupling connection with the case, and make the appropriate adjustments. 4. Bearing Indoor impurities or iron filings and other objects. Available th

(1) motor winding circuit When the motor winding phase winding open circuit, or a parallel branch in a branch circuit, will result in unbalanced three-phase current, the motor from overheating. (2) motor winding short-circuit When the motor winding short-circuit fault, short-circuit the winding copper loss is much greater than the normal operating current increases, causing the windings to overheat and even burn. (3) Motor connection error When the wrong motor connected in star delta connecti

The common type moisture add tropical KBQ. When the motor to stop working in a wet environment,, KBQ moisture plus tropical started working. It allows the motor winding temperature is always higher than the ambient temperature 5 ° C, in order to avoid the motor coil windings due to moisture condensation, ensure that the motor is still work properly in wet conditions. The moisture plus tropical KBQ specifications applicable to the different centers of the motor center height to select. KBQ mois

1 thermocouple Thermocouple temperature and over-temperature protection for motor windings or bearings. Motor common thermocouple the WRF iron - copper-nickel thermocouple temperature range of -40 to 750 ° C. For WRF-X-type thermocouple, when in use, the thermocouple embedded in the winding end portion of the coil taping fixed, together with the coil dipping drying argument would lead to the terminal, and is connected to a special instrument. WRF-M-type thermocouple, when in use, the motor b