Yeswelder MIG-205DS Operator's Manual page 25

PROBLEM
Work clamp, ground cable, and/or
welding cable get hot.
Gun nozzle arcs to work surface.
Feed motor operates but wire will
not feed.
Wire is "bird-nesting" at the drive
roller or jamming.
Wire burns back to contact tip.
Difficult arc start.
Arc is wandering (TIG).
POSSIBLE CAUSE
Bad ground or loose ground connection.
Spatter or Slag build-up inside nozzle or
nozzle is clogged.
Insufficient feed drive roller pressure.
Burr on end of wire.
Liner blocked or damaged.
Despooler tension too high.
Too much pressure on drive roller.
Contact tip is clogged or damaged.
Worn guides or drive roller alignment.
Wire feed speed is set too low for
voltage setting being used.
Stick-out too short.
Wrong size contact tip.
Contact tip is clogged or damaged.
Amperage is too low.
Make sure base metal is clean.
Make sure electrode is not damaged.
Tungsten is too large.
Gas flow is too high.
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POSSIBLE SOLUTION
Check the connection of the
gun to the machine. Check the connection of
the MIG ELECTRODE POLARITY JUMPER.
Check connection of the ground cable to the
work clamp. Tighten cable connection to
clamp if needed. Ensure the connection
between the work clamp and workpiece is
good and on clean, bare (not painted or
rusted) metal. Make sure cable is not
damaged.
Clean or replace nozzle as needed.
Adjust drive roller pressure.
Re-cut wire so it is square with no burr.
Clear with compressed air or replace liner.
Adjust despooler tension.
Adjust the drive pressure. See "Installing The
Welding Wire", page 10.
Replace contact tip.
Replace parts.
Increase wire feed speed (turn RIGHT KNOB
clockwise).
Increase stick-out (the amount the wire
extends past the contact tip).
Use correct size contact tip.
Replace contact tip.
Increase amperage setting.
Properly clean base metal.
Replace electrode if needed.
Use a smaller tungsten.
Reduce gas flow.
work clamp and
work