PROMIG 200ML/0509 – 9
© KEMPPI OY
3. OPERATION
Welding in places presenting an immediate
fi
re or explosion hazard is forbidden!
3.1. Welding processes
3.1.1. MIG/MAG -welding
In MIG/MAG-welding the
fi
ller wire is feeded through welding gun wire conduit to the
welding joint. Welding current strenght and wire feed speed are chosen according to the
characteristics of the work piece to be welded. The values are selected and adjusted with
separate potentiometers.
3.1.2. Synergic MIG/MAG -welding or 1-MIG
In synergic MIG-welding the parameters are determined by the wire feed speed set-
ting. This means that in the synergic process, welding power can be adjusted using one
potentiometer only. In the beginning of the process, a synergic curve suitable for the
fi
ller wire and gas must be chosen, to make the parameters adjustable from wire feed
potentiometer.
3.1.3. Synergic pulsed MIG-welding
In synergic pulsed MIG-welding the welding current is cut in pulses, so that the
fi
ller
material can be transferred to work piece controlled and without spatter. In the synergic
process, welding power can be adjusted using one potentiometer only. In the beginning
of the process, a synergic curve suitable for the
fi
ller wire and gas must be chosen, to
make the parameters adjustable from wire feed potentiometer. The pulse parameters of
power source change automatically when wire feed speed is changed.
3.2. Special functions
3.2.1. Welding gun trigger 2-sequence function
Gas
fl
ow and wire inch start, when the gun switch is pressed and stop when the switch
is released.
3.2.2. Welding gun trigger 4-sequence function
Gas
fl
ow starts, when the gun switch is pressed. When the switch is released, wire inch
starts and welding begins. When the gun switch is pressed again, wire inch stops and
when the switch is released, gas
fl
ow stops.
3.3. Operation functions
See also 2.4. Installation and main parts.
3.3.1. Wire feed unit and function panel
Before starting welding, welding settings suitable for the work piece are chosen in
function panel. See 3.1. Welding processes. When needed, the settings can be adjusted
on function panel. The main functions of the ML-panel are presented on the following
page.
