1, welding machine shell, there must be a good zero or grounding protection, the power supply should be installed by an electrician. Welding machine between the primary and secondary windings, windings and iron core, windings, leads and shell between, insulation resistance shall not be less than 0.5 megohm.
2, the welding machine should be placed in a rainproof and well-ventilated place, welding site is not allowed to pile up flammable, explosive substances, the use of welding machines must be required to wear protective equipment.
3, AC arc welding machine primary power line length should not be greater than 5 meters, welding machine secondary cable length should not be 30 meters.
4, welding pliers and handle line must be well insulated, firmly connected, replace the welding rod should wear gloves. Work in wet locations. Should stand on the insulated rubber or wood.
5, is strictly prohibited in the pressure of the container or pipeline welding, welding of electrically charged equipment must first cut off the power supply.
6, welding stored flammable, explosive, toxic substances of the container or pipe, must first be cleaned up, and all orifices open.
7, in the closed metal container welding, the container must be reliable grounding, good ventilation, and should be supervised. Strictly prohibit the content of the container into the oxygen.
8, welding preheating workpiece, there should be asbestos cloth or baffle and other heat insulation measures.
9, handle line, time line, prohibit contact with steel wire weaving, not to mention the use of wire rope or electromechanical equipment instead of zero line. All ground joints, must be firmly connected.
10, replacement site to move the line, should cut off the power supply, and shall not hold the line to climb the ladder.
11, remove the welding slag, the use of arc gas planer root clearing, should wear protective glasses or mask, to prevent iron slag splash injury.
12, more than one welding machine in a centralized welding, welding platform or welding must be grounded, and should have heat insulation board. All grounding (zero) shall not be connected in series to the grounding body or zero trunk.
13, tungsten-plated poles to be placed in a closed lead box, grinding pin tungsten-plated poles, must wear gloves, masks, production will be timely exclusion of dust.
14, carbon dioxide gas preheater shell should be insulated, end voltage should not be greater than 36 volts.
15, thunderstorms, should stop open-air welding operations; replacement of the site should be cut off the power to move the line, may not hold the line to climb the ladder.
16, must be in the flammable and explosive gases or liquids in the diffusion zone welding, should be tested by the relevant departments after permission before welding.
17, the end of the work, should cut off the power supply of the welder, and check the operation location, confirm that there is no fire hazard before leaving. Equipment should be maintained, do a good job of the cross operation (cleaning, lubrication, adjustment, fastening, anti-corrosion).
18, nearby piles of flammable and explosive products, in the absence of a thorough cleanup or take effective safety measures, can not be welded.
19, welding fire, should first cut off the power supply of the welding machine, and then carbon dioxide, 1211 dry powder and other fire extinguishers, prohibit the use of foam fire extinguishers.
20, welding should be applied according to the site fire prevention system fire approval procedures and guardianship measures