DC Helical Worm Geared Motors after a long period of time may appear to use the situation is not charging, and the reasons for the emergence of this situation can be summarized as the following aspects.
1, the wire connector is loose or fall off, wire foreskin damage caused by short circuit.
2, the fan pulley is too loose or oil skid.
3, the Helical worm Gearmotors commutator wear, burn or have oil, magnetic field coil circuit or short circuit, armature coil circuit or short circuit, rectifier short circuit, insulated charcoal holder.
4, Helical parallel shaft geared motor regulator or throttle contact ablation or dirt, balance resistance circuit, the pressure regulator bridge line burned, the pressure relief spring tension is weak, the air gap is too small