The welding power source is protected by a self resetting thermostat. The indicator will illuminate if the duty cycle of the power source has been exceeded. If the Over Heat light illuminates wait for the Over Heat light to extinguish before resuming welding.
The wire feed speed is increased by turning the Wire Feed Control knob clockwise or decreased by turning the Wire Feed Control knob counterclockwise. The wire feed speed should be set according to the specific application. Refer to the wire manufacture's literature for further information.
The Power Switch turns on and off the power supply to the welding power source.