Tweco Hefty II CC CV Voltage Sensing Wire feeder - Manual (Page 36)

Reset by placing power switch in the off position for at least 60 seconds.
Replace the 12 VDC driver p.c. board if necessary.
K. Wire does not feed with inch switch depressed
Check inch/purge switch (S3) and terminal strip (TB1) for loose or faulty connections.
Check for defective inch/purge switch (S3).
L. Gas does not flow with purge switch depressed
Check inch/purge switch (S3) and terminal strip (TB1) for loose or faulty connections.
Check for defective inch/purge switch (S3).
M. Meters do not function
Check meters (M1 and M2) and plug J2 on the motor control p.c. board for loose, faulty, or re-
versed connections.
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TROUBLESHOOTING
June 5, 2000 Revised 7-5