1. Class II products should be used in general occasions, and Class II or Class III products should be used in places with good electrical conductivity such as damp places or metal frames. In metal containers, pipes, boilers and other narrow places should be selected Class III products. If Class I products are used, other necessary safety measures should be taken according to safety requirements.

2, before use, it should be carefully checked, the appearance is not damaged, the switch action is flexible without the card, the power lead and the shell of the power tool should be intact. The insulation resistance between the winding and the housing shall not be less than 0.5 megohm when measured with a 500V megohm meter. Hand-held power tools with metal shells should have a reliable protective grounding wire.

3, the power socket must match the power plug of the power tool, keep the equipment away from rain and wet environment. When using power tools outdoors, use an extension cord that allows outdoor use and keep the cord away from heat sources, oil stains, sharp edges, or moving tool parts. The operating switch should be placed within reach of the operator.

4, according to the form and characteristics of power tools with personal protective equipment, wear appropriate clothing. Remove and remove the adjusting screwdriver or wrench before opening the power tool. Properly connect and use the power tool in strict accordance with the relevant safety operation procedures, and do not overload the power tool. Keep awake, focus on and operate the power tool rationally.