Dc motor commutation spark causes are varied, must be in numerous factors, find the main reason, can discharge fault, improve the reversing. Check out the commutation deterioration reason. Usually said reversing conditions normalize check and adjustment, is commonly used in dc motor commutator accident treatment method, its principle is as follows. In a dc motor was put into operation or in the operation of the past, the reversing has been is normal, but in the later operation process, gradually deteriorate or sudden deterioration of motor before reversing deterioration, the sliding contact, the motor structure and various parts work is normal. Some part in the process of the motor running, the working condition changed, or the environment changes, which destroyed the sliding contact, changed the normal state of reversing, and lead to the deterioration of the reversing. If on these factors, which affect the motor commutator to conduct a comprehensive inspection and adjustment, make its can restore the original normal state, the reversing can be back to normal. Test for reversing the normalization is dc motor for reversing the cause of the accident and troubleshooting of common method, it includes the following main items: 1. Resistance measurement between two commutator. Commutator pendulum to measure 3. Brush the neutral check 4 below. Brush pole pitch, drama and crack check and adjustment of 5. Brush and brush work performance tests
