4
will light, and the welder will turn off the output;
If the air inlet or outlet or the air duct is blocked, the fan rotates abnormally, the ambient
temperature is too high, and the welding machine is overloaded and used continuously, etc.,
the internal temperature will be too high;
When the temperature in the standby falls below the temperature protection point, the
indicator will go out and the welder will automatically return to standby.
（
2
）
Input fault: When the power supply of the welder is lower than 300V, this indicator will
light and the welder will turn off the output.
（
3
）
Current meter: When the welding torch switch is not pressed, the relative value of the
wire feeding speed is displayed;
The actual welding current value is displayed when the torch switch is pressed.
（
4
）
Crater current: used for crater current adjustment.
（
5
）
Electric arc characteristic knob: used to adjust the rate of current change during the
droplet transfer during welding. This knob adjustment will directly affect the softness and
hardness of the arc, the size of the splash, the formation of the weld and the stability of the
arc combustion. It is in the standard state at the “0” position and meets the needs of most
normal welding. The left-hand adjustment knob is scaled from “0” to “-5”, the arc is gradually
hardened, suitable for small gauge welding, the right-hand rotation adjustment is from “0” to
“+5” scale, the arc is gradually softened, suitable for medium specification and large
specification welding. .
Note: The arc hard splash is slightly larger, and the arc soft splash is small;
（
6
）
“welding/check gas”: When switching to the "check gas”, set or check the flow rate of
the shielding gas before welding, and after the requirements are met, switch to the
"welding" position, the gas is automatically controlled;
（
7
）
Crater switch: Used to switch “2-step/4-step”function switch.
（
8
）
Crater voltage: used for crater voltage adjustment.
（
9
）
Voltage meter: The preset welding voltage value is displayed when the welding torch
switch is not pressed;
The actual welding voltage value is displayed when the torch switch is pressed.
3.2 Down front panel
Down panel function as follows fig.2