Chicago Electric MIG 200 93804 Assembly And Operating Instructions Manual page 24

POROSITY
Small cavities or holes in the bead.
TOP
VIEW
POSSIBLE CAUSES AND SOLUTIONS
1. Stickout too long:
Reduce stickout.
2. Dirty workpiece or welding wire:
Make certain that workpiece and wire are
both clean and free from oil, coatings, and
other residues.
3. Insufficient gas flow at weld:
Increase flow of shielding gas.
4. Dirty nozzle:
Clean nozzle by following the directions
in the cleaning section of this manual.
5. Wrong type of shielding gas:
Use only the correct welding gas for the
application and wire.
STRIKE TEST
A test weld on a PIECE OF SCRAP can be tested
by using the following procedure.
WEAR ANSI GOGGLES DURING THIS PROCEDURE.
1. After two scraps have been welded to-
gether and the weld has cooled, clamp one
scrap* in a sturdy vise.
2. Stay clear from underneath while you strike
the opposite scrap with a heavy hammer,
preferably a dead-blow hammer.
3. A good weld will deform but not break.
A poor weld will be brittle and snap at the
weld.
*This test WILL damage the weld it is performed
on. This test is ONLY an indicator of weld tech-
nique and is not intended to test working welds.
For technical questions, please call 1-800-444-3353;
SKU 93804
Troubleshooting section at end of manual.
CROOKED/WAVY BEAD
TOP
VIEW
POSSIBLE CAUSES AND SOLUTIONS
1. Stickout too long:
Reduce stickout.
2. Inaccurate welding:
Use two hands or rest hand on steady sur-
face.
EXCESSIVE SPATTER
Spatter that is grainy and large.
Fine spatter is normal.
TOP
VIEW
POSSIBLE CAUSES AND SOLUTIONS
1. Wire feeding too fast:
Reduce wire feed speed.
2. Stickout too long:
Reduce stickout.
3. Dirty workpiece or welding wire:
Make certain that workpiece and wire are
both clean and free from oil, coatings, and
other residues.
4. Insufficient gas flow at weld:
Increase flow of shielding gas.
5. Shielding gas being blown away from
weld area:
Protect the weld area from drafts.
Page 24