WeiNan
1. According to the needs, distinguish between home and professional use. Most power tools are designed for professionals. When purchasing, you should distinguish between professional and general household tools. Often the difference between professional and general household tools is in power. Professional tools have relatively high power. In order to facilitate professionals to reduce workload, ordinary household tools have relatively small workload because of relatively small projects. Therefore, The input power of the tool also does not need to be very large.
2. The outer packaging of the tool should have a clear pattern and no damage, the plastic box should be sturdy, and the hasp to open the plastic box should be durable and firm.
3. The appearance of the tool should be uniform in color, there should be no obvious shadows and dents on the surface of the plastic parts, there should be no scratches or bump marks, the assembly dislocation between the shell parts should not be greater than 0.5mm, and the aluminum casting coating should be smooth and beautiful without defects. The surface of the whole machine should be free of oil and stains. When held by hand, the handle of the switch should be flat. The length of the cable should generally not be less than 2 meters.
4. The nameplate parameters of the tool should be consistent with those on the CCC certificate. The detailed address and contact information of the manufacturer and the manufacturer should be included in the instruction manual. The batch number for traceability of the product shall be on the nameplate or certificate of conformity.
5. Hold the tool by hand, turn on the power supply, frequently operate the switch to make the tool start frequently, and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether there are any abnormal phenomena on the TV and fluorescent lamps on site. in order to confirm that the tool is equipped with an effective radio interference suppressor.
6. The tool should be powered on and run for one minute. Hold it by hand during operation. The hand should not feel any abnormal vibration. Observe the reversing spark. The reversing spark should not exceed level 3/2, generally from the air inlet of the tool. Looking inside, there should be no obvious arcing on the surface of the commutator. During operation, there should be no abnormal noise.
2. The outer packaging of the tool should have a clear pattern and no damage, the plastic box should be sturdy, and the hasp to open the plastic box should be durable and firm.
3. The appearance of the tool should be uniform in color, there should be no obvious shadows and dents on the surface of the plastic parts, there should be no scratches or bump marks, the assembly dislocation between the shell parts should not be greater than 0.5mm, and the aluminum casting coating should be smooth and beautiful without defects. The surface of the whole machine should be free of oil and stains. When held by hand, the handle of the switch should be flat. The length of the cable should generally not be less than 2 meters.
4. The nameplate parameters of the tool should be consistent with those on the CCC certificate. The detailed address and contact information of the manufacturer and the manufacturer should be included in the instruction manual. The batch number for traceability of the product shall be on the nameplate or certificate of conformity.
5. Hold the tool by hand, turn on the power supply, frequently operate the switch to make the tool start frequently, and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether there are any abnormal phenomena on the TV and fluorescent lamps on site. in order to confirm that the tool is equipped with an effective radio interference suppressor.
6. The tool should be powered on and run for one minute. Hold it by hand during operation. The hand should not feel any abnormal vibration. Observe the reversing spark. The reversing spark should not exceed level 3/2, generally from the air inlet of the tool. Looking inside, there should be no obvious arcing on the surface of the commutator. During operation, there should be no abnormal noise.