Precautions for purchasing electric tools: firstly, electric tools are hand-held or movable mechanical tools driven by electric motor or electromagnet and driven by transmission mechanism. Electric tools are easy to carry, easy to operate and various functions. They can greatly reduce labor intensity, improve work efficiency and realize manual operation mechanization. Therefore, they are widely used in construction, housing decoration, automobile, machinery, power, bridge, horticulture and other fields, and a large number of them enter the family.
The characteristics of electric tools are light structure, small volume, light weight, small vibration, low noise, flexible operation, easy to control and operate, easy to carry and use, strong and durable. Compared with manual tools, it can increase labor productivity several times to dozens of times, and is more efficient, lower cost and easier to control than pneumatic tools.
Precautions for purchasing electric tools:
1. According to the need to distinguish between home use and professional use, most of the power tools are designed for professionals, so the professional and general household tools should be distinguished when purchasing. Generally, the difference between professional tools and general household tools is in power. The power of professional tools is large, so as to facilitate professionals to reduce workload. Due to the small engineering and relatively small workload, the input power of tools is not large.
2. The outer package of the tools shall be clear and free from damage. The plastic box shall be firm and the buckle for opening the plastic box shall be firm and durable.
3. The appearance of the tool shall be uniform in color, and the surface of the plastic parts shall be free of obvious shadow and dent, scratch or bump mark. The assembly dislocation between the shell parts shall be no more than 0.5mm. The coating of the aluminum casting shall be smooth, beautiful and free of defect. The surface of the whole machine shall be free of oil stain. When holding by hand, the handle of the switch should be flat. Generally, the length of cable shall not be less than 2m.
4. The nameplate parameters of tools shall be consistent with those on CCC certificate. The detailed address and contact information of the manufacturer and manufacturer shall be provided on the instruction manual. There shall be traceability batch number on the name plate or certificate.
5. Hold the tool by hand, turn on the power supply, operate the switch frequently to start the tool frequently, and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether the TV and fluorescent lamp are abnormal. In order to confirm whether the tool is equipped with effective radio interference suppressor.
6. When the tool is powered on and operated for one minute, hold it by hand. There should be no obvious vibration in the hand. Observe the commutation spark. The commutation spark should not exceed 3 / 2 level. Generally, from the air inlet of the tool, there should be no obvious arc on the surface of the commutator. During operation, there should be no abnormal noise.