Things to note when operating an electric fusion welder

For new or long-term unused welding machines, the insulation resistance between the windings and between the windings and the casing is often greatly reduced due to moisture. Short circuits and groundings are likely to occur when starting to be used, causing equipment and personal accidents. Therefore, use a megger to check whether the insulation resistance is qualified before use. Before starting a new welding machine, you should check whether the contactor part of the electrical system is in good condition. If it is normal, you can start it for trial operation under no load.
Only when it is proven that there are no electrical hazards can it be put into trial operation under load, and finally put into normal operation. The DC welding machine should rotate in the specified direction. For those with a ventilator, pay attention to whether the direction of rotation of the fan is correct. Blowing from above should be used. To achieve the purpose of cooling the welding machine.