④power source input terminal (It is attached with the protective cover )●After connecting the power source input cables, please be sure to well install power source input protective cover.⑤external control wire inlet ( external terminal )●When the wire connection of external terminals, please guide the wires through rubber cover and fasten all wires.⑥ grounding terminal (M8 bolt )● please use reliable grounding method.⑦cooling fan air passage inlet● The fan intakes cool air from this inlet.● Do not leave any obstacles near this inlet● The operation of the cooling fan.When the power is turned on, the fan rotates. If the no-welding operation lasts more than seven minutes,electricity until the welding operation starts for the next time. (After TS-ONpressing the switch again, the fan continues to rotate).⑧The gas regulator is equipped with the socket and fuse●The output of gas regulator socket is AC V. Please do NOT use it on any other purpose.● fuse capacity is 3A.● please use the gas regulator provided by the Company.After turning on the power source switch, gas regulator socket outputs voltage immediately.to saveit automatically stops11④⑤⑤⑥⑦⑧Names and functions100