Strata EZIMIG185C, Operating Instructions Manual

Page: 32 / 48

Fault Cause Remedy
A gap is le by failure of the
weld metal to fill the root of
the weld.
Figure 62
Welding current too low. Increase welding current.
Electrode too large for joint. Use smaller diameter
electrode.
Insufficient gap. Allow wider gap.
Non-metallic par cles are
trapped in the weld metal.
Figure 63
Non-metallic par cles may be
trapped in undercut from
previous run. If a bad undercut is present
clean slag bout and cover with
a run from a smaller gauge
electrode.
Joint prepara on too restricted. Allow for adequate
penetra on and room for
cleaning out the slag.
Irregular deposits allow slag to
be trapped. If very bad, chip or grind out
irregulari s.
Lack of penetra ons with slag
trapped beneath weld bead. Use smaller electrode with
sufficient current to give
adequate penetra ons. Use
suitable tools to remove all slag
from comers.
Rust or mill scale or preven ng
full fusion. Clean joint before welding.
Wrong electrode for posi on in
which welding is done. Use electrodes designed for
posi on in which welding is
done, otherwise proper control
of slag is difficult.
A groove has been formed in
the base metal adjacent to
the top of a weld and has not
been filled by the weld metal
(undercut).
Figure 64
Welding current is too high. Reduce welding current.
Welding arc is too long. Reduce the length of the
welding arc.
Angle of the electrode is
incorrect. Electrode should not be
inclined less than 45° to the
ver cal face.
Joint prepara on does not
allow correct electrode angle. Allow more room for joint for
manipula on of the electrode.
Electrode too large for joint. Use smaller gauge electrode.
Insufficient deposit me at
edge of weave.
Pause for a moment at edge of
weave to allow weld metal
build-up.
Power source is set for MIG
(GMAW) welding. Set power source to STICK
(MMA) mode.
6.9 MMA (Stick) Troubleshooting
31
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EZIMIG185C