Lincoln Electric Aspect 230 DC Operator's Manual page 28

ASPECT ® 230 DC
TIG WELDING ISSUES
PROBLEMS
(SYMPTOMS)
Poor starting
Black area along weld bead
Output quits momentarily; gas flow
and hi-freq are also interrupted
Arc flutters
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
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
Poor work clamp connection
Start current is too low
Oily or organic contamination on work piece
Tungsten electrode may be contaminated
Leaks in gas line or torch connection
Gas tank is near empty
May be caused by hi-freq interference
Faulty Components, PC Boards or
Connections
Pulser may be turned on inadvertently
Electrode may be too large for current setting Use smaller Tungsten
Insufficient gas shielding
Contaminated gas or leaks in gas line, torch,
or connections
Spot Timer may be turned on inadvertently
Faulty Components, PC Boards or
Connections
COURSE OF ACTION
Check and secure work connection
Increase start current
Clean work piece
Grind to clean electrode
Check connection
Replace the gas tank
Check for proper machine ground connection;
surrounding machines that generate hi-freq also
should be grounded properly
Contact your local Lincoln Authorized Service Facility
Turn Pulser off
Adjust flow rate
Check gas line & connections
Access "GTAW" menu (see operation section) and
change "SPOT" to "OFF"
Contact your local Lincoln Authorized Field Service
Facility.
E-2
TROUBLESHOOTING
RECOMMENDED