Argon arc welding machine does not arc, protection lamp is bright
The red light may have two kinds: the machine in 1. due to overheating, overload long time machine heat is too high due to thermal protection, machine level stop output, the red light, then we used to call "thermal protection lights," 2. machine level fault or misoperation fault at the machine level will stop output, red light we used, called "fault light"The difference between the two: when the red light, has been unable to welding, then do not turn off the power by the cooling fan operation, observed a few minutes, such as red light welding and output, proved to be thermal protection, can continue to work, if long time light does not extinguish, the machine is still no output, must promptly turn off the power to exclude faultMost current models are used only to show the red light Lei of the above two cases, so it should be the correct identification, timely treatment for reference.
If it is an old welding machine, the biggest possibility is that the welding machine has not removed dust for a long time, and the dust cover on the main board affects the heat protection caused by heat dissipation.Use the air compressor to connect the blow gun and blow it out of each heat sink of the welder. Just fine。 The welder blows dust at least 2 times a month.
When the machine is turned on, protect the light, or press the gun to protect the light. Boot protection light, MOS pipe may be broken. Just above the board. Turn on the gun and protect it. Maybe the rectifier diode is out of order. It is also possible that the transient diode is out of order. There is also the protection caused by leakage of high frequency. Take the place where the welder is repaired. It's not expensive to fix it in a small machine
