NOTE! The operator should set the functions that meet the welding requirements. If
the selections are incorrect this may lead to problems such as an unstable arc,
spatter, or sticking of the welding electrode to the work piece.
Arc force: Arc force prevents the electrode sticking when welding. Arc force provides a
temporary increase in current when the arc is too short and helps maintain consistent
excellent arc performance on a wide range of electrodes. The Arc force value should be
determined according to welding electrode diameter, current setting, and process
requirements. High arc force settings lead to a crisper, higher penetration arc but with some
spatter. Lower arc force settings provide a smooth arc with lower spatter and a good weld
seam formation, but sometimes the arc is soft or the welding electrode can stick.
Hot start current: The hot start current is an increase in welding current at the start of the
weld to give excellent arc ignition and to avoid the electrode sticking. It also can reduce weld
defects at the start of the weld. The magnitude of hot start current is generally determined
based on the type, specification, and welding current of welding electrode.
During DC welding the heat on the positive and negative electrodes of the welding arc is
different. When welding using DC power supply, there are DCEN (DC electrode negative)
and DCEP (DC electrode positive) connections. The DCEN connection refers to the welding
electrode connected to the negative electrode of the power supply and the work piece
connected to the positive electrode of the power supply. In this mode the work piece
receives more heat, resulting in high temperature, deep molten pool, easy to weld through,
suitable for welding thick parts. The DCEP connection refers to the welding electrode
connected to the positive power supply with the work piece connected to the negative power
supply. In this mode the work piece receives less heat, resulting in low temperature, shallow
pool, and difficulty in welding through. This is suitable for welding thin parts.
7.1.5 During welding
NOTE! This unit has anti-stick function by default. In the welding process, if short
circuit occurs for 2 seconds, it will automatically enter anti-stick function. This means
the welding current will automatically drop to 20A to allow the short circuit to be
cleared. When the short circuit is cleared the welding current will automatically return
to the set current.
7.1.6 Turn off the power supply after welding
The power switch is located on the rear panel of the machine and set it to the "off" position.
After a time delay, the panel indicator is off and the welder stops working.
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