The motor wheel is overheated by the bearing or the locomotive, and the cause is two. The bearing damage is not insufficient or the uncleaning of the bearing shell and the bearing box is loose, and the locomotive is specially advised that the two bearing clearance is not suitable. Skewed card bearings. The knives are not bright and the foot sounds, and the cause is that there is an open circuit in the lighting resistance when the power cord or the grounding wire is broken, the fuse is broken, the contact is poor, or the multi-tube is connected in parallel. The storage voltage is also reduced by the voltage of the electric scoop device. The cause of the second power storage is also in the group. There are several power storage devices. The "reverse pole" power supply device directly loses the positive and negative voltages due to internal or external factors. The line and the storage battery are also poorly connected to the pole or the gold interceptor.
Startup type troubleshooting method and measures: Check whether the electrical appliance is disconnected, which may be due to insufficient elastic force, so that the skateboard is not connected to the overhead line or the power cable is disconnected, and the terminal is loose. Check if the main magnetic pole or the commutating magnetic pole coil of the traction motor is open, whether the connecting wire or the terminal is open, or the brush and the commutator are in poor contact. Check whether the contacts of the automatic switch are burned off, the power supply wire is broken, or the terminal is disconnected. Check if the grid voltage is too low and raise the line voltage. The uniform starting resistor is broken and the starting resistor is replaced. The wire is broken because the main and auxiliary contacts of the controller are detached or the horn is poor.
