How to use hand-held power tools correctly

1. Check carefully before use, the appearance should be intact, the switch action should be flexible without jamming, and the power cord and the housing of the electric tool should be intact. Measure the insulation resistance between the winding and the shell with a 500-volt megohmmeter, and it shall be no less than 0.5 megohmmeter.

2. Hand-held electric tools with metal shell should have reliable protective grounding wire. The power cord is a multi-core soft rubber sheathed cable, and both ends of its grounding protection line should be firmly connected.

3. Hand-held power tools should be used by full-time personnel with certain professional knowledge. When using, you should strictly abide by the relevant safety operation procedures. 4. Before use, you must first check whether the related electrical protection devices and mechanical protection devices are in good condition. Its application should be normal. Also pay attention to whether the rotating part rotates flexibly without jamming.

5. When using Class I hand-held power tools, you must wear protective articles that meet the requirements and set up qualified protective articles. And take corresponding safety protection measures to prevent electric shock according to regulations, such as installing leakage protectors in power supply lines, or wearing insulating gloves, shoes or standing on insulating mats.

When using Class II hand-held electric tools in damp and narrow places, a leakage switch should be installed, with the working current of the switch less than 1.5mA and the action time less than or equal to 0. 1 sec. The leakage switch should be placed in a container and supervised by a special person.