Welder UN-5-7 Usage method
Adjust pliers mouth according weld-ment before welding, let weld-ment clamped on the electrode, ensure
center line of pliers mouth positive, then adjust interval between pliers mouthes (normally weld-ment cross section is bigger, the interval is bigger, per contra is little), before welding working over cross section of weld-ment to ensure sound contact, choose proper electric current, rotate handle make pliers mouth to max interval, then clamp weld-ment on the electrode, then lay handle back, push switch close power source, last low-pressure electric current through weld-ment and instant fusing it, and auto-feeding by spring, at this time, welding finish.