PROBLEM
POSSIBLE CAUSE
REMEDY
Power source stops.
Overheating protection activated due to overload. Protection automatically resets when transformer has cooled
(about 15 min).
No weld current, supply fuse blown.
Rectifier blown.
Replace rectifier.
No weld current.
Bad connection between clamp and workpiece.
Clean or grind contact surface and weld area.
Break in earth lead.
Repair or replace earth lead.
Break in torch lead.
Repair or replace torch.
Feed motor not working, lamp is on.
Fuse blown.
Replace fuse.
Gear damaged or worn.
Replace gears (Section 6).
Motor defective.
Replace motor (Contact service agent).
Wire does not feed, feed roller rotates.
Pressure roller incorrectly adjusted.
Adjust tension.
Dirt, dust, etc, have collected in torch liner.
Clean the liner from the machine forward. Use compressed air.
If too much dirt, replace the liner (Section 6).
Gas cup (nozzle) or tip defective.
Replace gas cup (nozzle) and/or tip (Section 6).
Deformed wire.
Check roller tension and adjust it if necessary (Section 3).
Wire feeds unevenly.
Dirt, etc., in liner.
Clean the liner from the machine forward. Use compressed air.
Gas cup (nozzle) or tip defective.
Replace gas cup (nozzle) and/or tip (Section 6).
Gas cup (nozzle) spattered.
Clean or replace gas cup (nozzle) (Section 6).
Feed roller groove clogged.
Clean feed roller (Section 6).
Feed roller groove deformed.
Replace feed roller (Section 6).
Pressure roller tension incorrect.
Adjust tension (Section 3).
Unstable arc.
Incorrect settings.
Check settings. (Section 4).
Impurities in weld area.
Clean and/or grind workpiece. (Section 4).
Worn or defective gas cup (nozzle).
Replace gas cup (nozzle). (Section 6).
Porous weld.
No gas.
Open gas cylinder, regulate gas flow.
Gas cup clogged.
Clean or replace cup (Section 6).
Draft blowing away shielding gas.
Screen off welding site or increase gas flow.
Rusty or dirty joints.
Clean or grind the workpiece (Section 4).
Torch too far from, or at wrong angle to work.
The distance from gas cup to workpiece should be 8-10mm
Gas leak.
Check hoses, connections and torch assembly.
Faulty electrovalve.
Clean out or replace.
Electrode sticking in gas cup (nozzle).
Worn or defective gas cup (nozzle).
Replace gas cup (nozzle). (Section 6).
Electrode deformed.
Check roller tension. (Section 3).
Wire speed too slow.
See recommendations for wire speed. (Section 4).
Irregular weld bead.
Torch incorrectly held.
Use correct torch angle.
Wire weaving in weld pool.
Check roller tension and adjust as needed. (Section 3).
Weld bead too narrow and raised.
Weld current too low.
Increase power and wire speed. (Section 4).
Weld speed too high.
Move torch slower and weave a little more.
Weld bead too wide.
Weld current too high.
Decrease power and wire speed. (Section 4).
Weld speed too low.
Move torch faster and weave less.
Arc too long.
Bring torch closer to workpiece.
Poor penetration.
Weld current too low.
Increase power and wire speed. (Section 4).
Arc too long.
Bring torch closer to workpiece.
Excessive penetration.
Weld current too high.
Decrease power and wire speed. (Section 4).
Weld speed too slow.
Move torch faster.
Incorrect distance of torch to workpiece.
Torch distance should be 8-10mm.
Fuse blowing.
Wire tension too great.
Adjust tension. (Section 3).
Gas cup contact tip clogged.
Clean gas cup and contact tip. (Section 6).
NOTE:
It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT:
No liability is accepted for incorrect use of this equipment.
WARRANTY:
Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION:
For a copy of our latest catalogue and promotions, call us on 01284 757525 and leave your full name and address, including postcode.
Supermig250
Issue No: 1 - 03/03/09
01284 757500
www.sealey.co.uk
01284 703534
Sole U.K. Distributor
Sealey Group
Bury St. Edmunds
Suffolk.
Web
8 . TROUBLESHOOTING
