Lincoln Electric ASPECT 375 Operator's Manual page 37

ASPECT™ 375
SYMPTOMS
Insufficient cleaning
Insufficient penetration
Unstable
Tail-out current too high
Output shut off during
welding
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE CAUSE
Wave shape settings may not suit
application
Wave shape settings may not suit
application
Wrong Wave form setting
AC frequency may not suit application
Finishing current may be set too high
Spot Timer may be turned on
inadvertently
Faulty Components, PC Boards or
Connections
RECOMMENDED COURSE OF ACTION
Set for manual balance and
increase EP or reduce balance
percentage
Set for manual balance and
increase EN or balance
percentage
Access "GTAW" menu (see
operation section) and change
"WAVE" setting to "SQRE" or "SOFT"
Adjust AC frequency
Reduce Finishing current
Access "GTAW" menu (see
operation section) and change
"SPOT" to "OFF"
Contact your local Lincoln
Authorized Field Service Facility.
CAUTION
E-4
TROUBLE SHOOTING