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