MIG TROUBLESHOOTING TIPS
Improper wire spool installation
Use wire with a diameter between 0.023” (0.6mm) and 0.035” (0.9mm). Larger diameters draw too much amperage.
Trying to weld single pass on material larger than 3/8” (9.5mm) thick is not possible with this machine. Multi-pass recommended for thicker materials.
Welder should be the only thing plugged into the circuit.
• Usually due to low input power.
• Welder should be only thing plugged into circuit.
• Avoid using extension cords. If one must be used, it must be 3 conductor #12 AWG or larger up to 25 feet.
• Generators must be a minimum 4,000W (120V) or 10,500W (240V) continuous output with no low-idle function (or low-idle off), 5% THD Max.
Frequently tripping circuit breaker or exceeding duty-cycle
Low weld output or poor fusion
• Can cause feed issues and inconsistent weld quality.
• Verify all parts are in the proper place. Refer to manual.
Knob set ~2-3 marks
Too little pressure = roll can slip and feed can be erratic.
Too much pressure = can crush wire, causing wire feeding problems and welder damage.
Incorrect drive roll pressure
Trigger must be pulled to initiate the arc. This
will initiate the arc and begin feeding the wire.
DEPRESS THE TRIGGER COMPLETELY
No arc start on contact
• Can cause feed and weld issues and
arc instability.
• Each component must be sized for
wire diameter used.
Mismatched drive roll, liner, or
contact tip size
To ensure maximum quality, always clean
and prepare welding surfaces.
Workpiece Preparation
Connect ground clamp to clean, bare metal. No rust,
paint or other coatings. Attach the ground clamp
directly to the workpiece if you are experiencing issues.
Workpiece Grounding
1. Select process according to diameter of wire being used (TruSet MIG .024”, .030”, or
.035”).
2. Follow steps 3-9 of Manual MIG setup.
3. Push the right knob to light up the Wire/Gas LED then turn the knob to select the wire and
shielding gas combination being used.
4. Push the right knob again to light up the LED then turn the knob to select the
workpiece thickness.
5. The machine will set optimal voltage and WFS. Continue with step 11 of the Manual MIG
setup.
6. The automatic settings can be trimmed up or down with the left knob if you want to refine
the weld settings.
Expert-Tech Tips:
• Best performance is at a trim setting between -5 and +5.
• Step up to the next material thickness to get more penetration.
TruSet™MIG
MIG QUICK START GUIDE
190 MP WELDER
ITEM# 323
8” (200mm) wire spool 4” (100mm) wire spool
3
4
1
6
