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CURRENT CONTROL. Adjusts welding current by controlling power source output.
VOLTAGE CONTROL. Adjusts arc voltage by control- ling wire feed speed.
TRIGGER INTERLOCK. With the switch in the OFF position, the wire feed motor runs and the welding cir- cuit is energized only when the gun trigger is pressed. The operator must hold the trigger in from the start to the finish of the weld. To stop the arc, the operator releases the trigger and raises the gun from the work. With the switch in the ON position, the operator holds the trigger until the arc is established, then the trigger can be released. When the welding is completed, the operator raises the gun from the work to break the arc.
WIRE FEED DIRECTION CONTROL. The direction the electrode passes through the wire feeder is con- trolled by this switch. The electrode is fed through the wire feeder in the same direction that the switch is pointing.
CIRCUIT BREAKER. Protects the circuit from severe wire feed motor overloads and short circuits. Press to reset.
GROUND LEAD PROTECTOR RESET BUTTON. The ground lead protector guards the ground lead in the control cable from damage that can occur when the electrode circuit touches the wire feeder frame while the gun trigger is pressed. This button resets the ground lead protector circuit.
VOLTAGE CONTROL. Adjusts arc voltage by control- ling power source output voltage.
CURRENT CONTROL. Adjusts wire feed speed to control welding current.
FIGURE B.2 – CONSTANT VOLTAGE CONTROLS
CURRENT
CONTROLS
VOLTAGE
CONTROLS
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CONSTANT VOLTAGE CONTROLS
Operator controls for welding using a constant voltage power source that differ from the constant current con- trols are illustrated in Figure B.2. Refer to the figure and the following explanations of the controls.
