Westweld NB-350MK, Manual Instruction

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4
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 property 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.
4.2 Down front panel
Down panel function as follows fig.2
Fig.2 Front panel function