Stone cutting machine is stipulated by state certification and accreditation administration compulsory certification of products, so when the choose and buy, should first check whether the products have 3 c logo, check method is commonly, the tools of the nameplate of the packaging or tools for the 3 c logo, if still have doubt (due to the electric tool manufacturers through the annual review of the supervision, state committee to suspend or cancel the certificate), but the website of the state on, refer to the tool of 3 c certificate whether current effective.
According to the needs of users, the first difference between the family with or professional, because most of the power tools are designed for professional personnel, so before the purchase, should first distinguish between professional and general family use work shell. Generally, the power difference between professional tools and tools used by ordinary families is in the power. The power of professional tools is relatively large to facilitate the professionals to reduce the workload. For tools used by ordinary families, the input power of tools is not large due to the small project and relatively small workload.
Observe packing for stone cutting machine, the outer packing should be the pattern is clear, no damaged, open the box to observe the appearance of the stone cutting machine, should be uniform color, plastic surface have no obvious shadow and dent, there should be no scratches or knock against, shell parts assembling mismatch between 0.5 mm or less, aluminum casting coating is smooth and beautiful without defect, and the machine surface should be free of oil and stain. Hold with the hand, feel better feel, switch handle should be flat. The length of the cable should not be less than 2 meters in general.
Check the nameplate and manual of the stone cutting machine. The nameplate parameters should be consistent with those on the 3C certificate. The specification shall include the detailed address and contact information of the manufacturer and the manufacturer. The nameplate or certificate of conformity shall bear the batch number of the product traceable. Hold the stone cutting machine with your hand, switch on the power, and operate the switch frequently with your hand to start the tool frequently. Observe whether the on-off function of the stone cutting machine switch is reliable. At the same time to observe the scene of television, fluorescent lamp whether there are abnormal phenomena. To verify that the tool is fitted with an effective radio interference suppressor.
Bridge saw machine power running for a minute, when running with hand holding, hand should not feel any abnormal vibration, observe the commutation spark, the commutation spark should not be more than 1.5 level, generally from the tool into the air, in the commutator surface should be no obvious arc light. When running, there should be no normal noise and so on.
