- Aug 30, 2017 -
A machine for cutting stones is the national certification committee of the mandatory certification products, so in the purchase, the first should check whether the product has a 3C logo, access methods are generally, in the packaging of the tool or tool on the nameplate is there 3C logo, if there is still doubt (because the manufacturer of power tools did not pass the annual supervision review, the State Commission to suspend or revoke its certificate), on the National Certification Commission website, access to the tool 3C certificate Effective now.
According to the needs of users, the first distinction between family use or professional use, because most of the power tools are designed for professionals, so before the purchase, should first distinguish between professional and general family with the shell. Usually professional and general household tools with the difference in power, professional tools with large power to facilitate the professionals to reduce the workload, the general household tools because of the small project, the workload is relatively small, so the tools The input power does not need to be large.
Observation of stone cutting machine packaging, packaging should be clear, no damage, open the box to observe the appearance of stone cutting machine, should be uniform color, plastic surface no obvious shadow and dents, there should be no scratches or bumps traces , Between the shell parts of the assembly dislocation ≤ 0.5mm, aluminum casting paint smooth and beautiful without defects, the whole surface should be no oil and stains. Hand holding, the feeling of feeling better, the switch handle should be flat. The length of the cable should generally be no less than 2 meters.
Check the nameplate and brochure of the stone cutting machine. The nameplate parameters should be consistent with the 3C certificate. The manufacturer should specify the address and contact details of the manufacturer and the manufacturer. The nameplate or certificate should have a traceable number of the product. Hand holding stone cutting machine, turn on the power, hand frequent operation switch, so that the tool frequently start to observe the stone cutting machine switch off function is reliable. At the same time observe the scene of the TV, fluorescent lights are abnormal phenomenon. In order to confirm whether the tool is equipped with a valid radio interference suppressor. Stone cutting machine running for one minute, running hand holding, hand should not feel any abnormal vibration, observe the exchange of sparks, the sparks should not be more than 1.5, generally from the tool into the air Look in the commutator surface should be no obvious arc. Run, there should be no normal noise and so on.