10
4.3 TROUBLE SHOOTING GUIDE
Trouble Possible
cause
Solution
•
The welding machine supplies
limited current.
→
Line fuse blown.
Replace line fuse.
→
Burnt out diode or diodes.
Replace the pieces.
→
Burnt out electronic board.
Replace it.
→
Loosened torch or earth
connection or any other electrical
power connection.
Tighten all connections.
→
Voltage adjustment switch has a
loose contact.
Replace the switch.
•
Welding with a lot of metal
spatter.
→
Improper adjustment of welding
parameters.
Select the correct parameters through the
welding-voltage potentiometer and the wire-
speed adjustment potentiometer.
→
Insufficient grounding.
Check grounding connections.
•
The wire jams or entangles
between the drive rolls and the
torch in feed wire guide.
→
Contact tip with wrong diameter.
Replace it.
→
Misalignment of the drive roll
groove.
Realign.
→
Inlet wire guide out of position.
Position it as close as possible to the drive roll.
→
Obstructed or clogged liner.
Remove and clean.
•
No wire feed or irregular wire
feed.
→
Drive roll with too large a groove. Replace the drive roll.
→
Obstructed or clogged line.
Remove and clean.
→
Wire holding roller not completely
tightened.
Tighten all the way.
→
Spool holder clutch too tight.
Loosen the clutch through the adjustment.
→
Clogged contact tip.
Replace.
•
Porosity in the welding seam.
→
Insufficient shielding gas.
Increase gas delivery.
→
Excess oxidation of the edges to
be welded.
Thoroughly clean the edges with a metal brush.
→
Gas nozzle partially or completely
clogged by spatter.
Remove and clean or replace being careful not
to clog the gas outlets.
