17
HEAVYMIG 350-4 / 350 GR / 450 GR / 450 WS
EN
TROUBLESHOOTING
SYMPTOMS
POSSIBLE CAUSES
REMEDIES
The welding wire speed is not
constant.
Debris is blocking up the opening.
Clean out the contact tip or change
it and replace the anti-adherence
product.
Ref.041806
The wire skids in the rollers.
- Check the roller pressure or replace
it.
- Wire diameter incompatible with
roller
- Covering wire guide in the torch
incompatible.
The rollers slide over the wire
Check and tighten the roller’s screws.
The wire-feeder motor doesn’t ope-
rate.
Reel or roller brake too tight.
Adjust the brake and rollers.
Electrical supply problem.
Check that the power switch is in the
"On" position.
Bad wire feed.
Covering wire guide dirty or da-
maged.
Clean or replace
Reel brake too tight
Adjust the brake
No welding current
Bad connection to the main supply.
Check the mains connection and
ensure the supply is 400 V (3PH).
Bad earth connection.
Check the earth cable (connection
and clamp condition).
Torch trigger inoperative.
Check the torch trigger / replace
torch
The wire jams (after the rollers)
Guide wire sheath crushed.
Check the sheath and torch body.
Wire jammed in the torch
Clean or replace.
No capillary tube.
Check the presence of capillary tube.
Wire speed too fast
Reduce the wire speed
The welding bead is porous
The gas flow rate is not sufficient.
Adjust flow range 15 to 25 L / min.
Clean the work-piece.
Gas bottle empty.
Replace
Gas quality unsatisfactory.
Replace
Air flow or wind influence.
Prevent drafts, protect welding area.
Gas nozzle dirty.
Clean or replace the gas nozzle.
Poor quality wire.
Use suitable WIRE for MIG-MAG
welding.
Work-piece in bad condition. (rust,
etc…)
Clean the metal before welding.
The arc produces a lot of sparks
Arc voltage too low or too high.
See welding settings.
Bad earth connection.
Check the earth cable (connection
and clamp condition)
Insufficient gas flow.
Adjus the gas flow.
No gas flow at the end of the torch.
Bad gas connection.
Check that the gas pipe is plugged
properly.
Check the solenoid valve.
