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(See Figure B.2)
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The 2 Step - Trigger Interlock
switch changes the function of the
gun trigger. 2 Step trigger opera-
tion turns welding on and off in
direct response to the trigger.
Trigger Interlock operation allows
welding to continue when the trig-
ger is released for comfort on long
welds.
Place the toggle switch in the '/&position for 2
Step operation or in the UP position for Trigger
Interlock operation.
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2 Step trigger operation is the most common. When
the gun trigger is pulled, the welding power source
energizes the electrode output and the wire feeder
feeds wire for welding. The power source and wire
feeder continue welding until the trigger is released.
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Trigger Interlock operation provides for operator com-
fort when making long welds. When the gun trigger is
first pulled, the welding power source energizes the
output and the wire feeder feeds wire for welding.
The gun trigger is then released while the weld is
made. To stop welding, the gun trigger is pulled
again, and when it is released the welding power
source output turns off and the wire feeder stops feed-
ing wire.
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(See Figure B.2)
When cold feeding, the wire
drive will feed electrode but
neither the power source nor
the gas solenoid will be ener-
gized. Adjust the speed of cold
feeding by rotating the WFS
knob. Cold feeding, or "cold
inching" the electrode is useful
for threading the electrode
through the gun.
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