The grinding machine electrical equipment is composed of various switches, buttons, contactors and other components connected by wires. They often occur in the operation of a variety of failures, when the failure should not be aimlessly searching, so that not only can not quickly eliminate the fault, on the contrary will expand the fault and cause serious accidents.

General machine tool electrical failure causes, can be roughly divided into two categories:

First, the natural development of faulty electrical components after long-term use, will inevitably produce contact burn damage, switch, motor and other mobile parts of mechanical wear, as well as various components, wire insulation aging and other natural phenomena, such as these phenomena can not be planned to prevent or eliminate, it will affect the normal operation of electrical equipment.

Two: Man-made failure refers to the electrical equipment is damaged by undue mechanical external force, and the quality of components is not good or due to improper operation and other reasons caused by the fault.