1.5 AC ARGON ARC WELDING
1. Put switch "19" (AC/DC) onto the position "AC".
2. The method of the connection same as 1.1
3. Regulating "13" to select right "sp(AC balance)"
SP=
tp
tn
*100%
tp: the time of I
2
at positive
tn: the time of In at Negative
4. Regulate "15" to select right AC square wave frequency.
5. The Method of the welding same as 1.1
2. Hand welding with electrode
1.
Connect input power for the welder, then switch on the power. The Data Display Meter (“7”)
light will switch on.
2.
Put switch"12" (MMA/TIG/CUT switch) onto the position "MMA".
3.
Regulate Current Knob "4" (base current regulator) to select right welding current (Pulse
current regulator to minimum, turning it anticlockwise to the end)
select empiric formula: I=40d, d
is dia. of the electrode.
4.
Notice positive and negative connections during welding.
A. NEGATIVE CONNECTION
B . POSITIVE CONNECTION
WELDER
WELDER
ELECTRODE
HOLDER
WORKPIECE
ELECTRODE
HOLDER
WORKPIECE
5.
Pay attention to the rated welding current and t h e rated duty cycle of the welder. Overload
is not allowed.
6. After the welding operation is finished let the welder cool down for a few minutes before
cutting off the power switch.
