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OM-884 Page 20
3-5. Burnback Control
Ref. ST-119 647-C / SB-191 630
Burnback circuitry keeps welding
wire from sticking to workpiece
after arc is extinguished. This
circuitry keeps weld output on
welding wire from 0 to 0.25 seconds
after wire has stopped feeding. This
delay action permits welding wire to
burn back to a point where it neither
sticks to workpiece or contact tip.
To adjust burnback time, open front
access door.
1 Interface Board PC3
2 Potentiometer R37
Rotate R37 clockwise to increase
burnback time.
Close and secure front access
door.
Tools Needed:
Non-Conductive
1
2