1. How should the motor damp dry?
    If the conditions are best to the damp motor sent to the professional repair department dry; if unconditional can handle their own, the motor connected to the 220V single-phase power supply (that is, the motor three lines connected to the single-phase line of fire, the other three outlet connected to the zero line) , If a slight damp bake can be two hours, if the more severe moisture to bake one to two days. Baking good before use, measured with megger measured insulation resistance, not less than 0.5MΩ can be used normally.
2. How to deal with the three-phase motor current uneven?
    When the three-phase power supply is balanced, the deviation of any phase and three-phase average of the three-phase no-load current of the motor should be no more than 10% of the average of the three phases. Users of the proposed three-phase current imbalance problem, the vast majority of the motor outside the user power problems (including their own voltage imbalance and poor contact caused by the wiring), the specific method is to check the three-phase power phase (Note that must be in the motor outlet box wiring parts down, so you can clearly determine the motor outside the part of the fault), that is assumed that the three-phase power wiring sequence U, V, W, now re-connected into W, U , V, this still can guarantee the original steering of the motor, such as the original three-phase current of the highest or lowest phase in the process of reversing the line which changes with the line, then the power problem, the motor itself is no problem, such as the highest Or the minimum phase fixed in the original phase does not move, then the motor may be a problem. But sometimes the user is using the star angle conversion start, from the motor is out of the six lines, then use the same method first down the top three, if not, then down the next three lines.
3. How is the motor overload?
  Remove the drive belt and turn the driven spindle by hand to see if the spindle is flexible. If it can not be flexible rotation, you should find out the reasons and maintenance; if flexible rotation that reason is not here, it should adjust the ancillary equipment, reduce the pump flow or fan air flow or feed equipment into the volume, in order to reduce the motor The load.

4. How does the motor phase lack?
  Motor failure phase failure, are generally occurred in the winding outside the lead line, so check whether the fuse fuse, the terminal is off and lead whether the open circuit, the fault can be ruled out.
5. What are the causes of motor bearing overheating, how should they be handled separately?
Motor bearing overheating causes are the following:
(1) bearing damage, replacement of new bearings;
(2) too much oil, too little or poor oil, the replacement of new lubricants;
(3) bearing and shaft with too loose to take the inner or too tight, repair bearing Taiwan;
(4) bearing and end cover with too loose to go outside or too tight, replace the end cover;
(5) the belt is too tight, adjust the belt to the appropriate;
(6) the coupling is not good equipment caused by the motor and the device is not heart, re-adjust the concentricity.