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8 . TROUBLESHOOTING
PROBLEM
Power source stops.
No weld current, supply fuse blown.
No weld current.
Feed motor not working, lamp is on.
Wire does not feed, feed roller rotates.
Wire feeds unevenly.
Unstable arc.
Porous weld.
Electrode sticking in gas cup (nozzle).
Irregular weld bead.
Weld bead too narrow and raised.
Weld bead too wide.
Poor penetration.
Excessive penetration.
Fuse blowing.
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.
POSSIBLE CAUSE
Overheating protection activated due to overload. Protection automatically resets when transformer has cooled
Rectifier blown.
Bad connection between clamp and workpiece.
Break in earth lead.
Break in torch lead.
Fuse blown.
Gear damaged or worn.
Motor defective.
Pressure roller incorrectly adjusted.
Dirt, dust, etc, have collected in torch liner.
Gas cup (nozzle) or tip defective.
Deformed wire.
Dirt, etc., in liner.
Gas cup (nozzle) or tip defective.
Gas cup (nozzle) spattered.
Feed roller groove clogged.
Feed roller groove deformed.
Pressure roller tension incorrect.
Incorrect settings.
Impurities in weld area.
Worn or defective gas cup (nozzle).
No gas.
Gas cup clogged.
Draft blowing away shielding gas.
Rusty or dirty joints.
Torch too far from, or at wrong angle to work.
Gas leak.
Faulty electrovalve.
Worn or defective gas cup (nozzle).
Electrode deformed.
Wire speed too slow.
Torch incorrectly held.
Wire weaving in weld pool.
Weld current too low.
Weld speed too high.
Weld current too high.
Weld speed too low.
Arc too long.
Weld current too low.
Arc too long.
Weld current too high.
Weld speed too slow.
Incorrect distance of torch to workpiece.
Wire tension too great.
Gas cup contact tip clogged.
Sole U.K. Distributor
Sealey Group
Bury St. Edmunds
Suffolk.
REMEDY
(about 15 min).
Replace rectifier.
Clean or grind contact surface and weld area.
Repair or replace earth lead.
Repair or replace torch.
Replace fuse.
Replace gears (Section 6).
Replace motor (Contact service agent).
Adjust tension.
Clean the liner from the machine forward. Use compressed air.
If too much dirt, replace the liner (Section 6).
Replace gas cup (nozzle) and/or tip (Section 6).
Check roller tension and adjust it if necessary (Section 3).
Clean the liner from the machine forward. Use compressed air.
Replace gas cup (nozzle) and/or tip (Section 6).
Clean or replace gas cup (nozzle) (Section 6).
Clean feed roller (Section 6).
Replace feed roller (Section 6).
Adjust tension (Section 3).
Check settings. (Section 4).
Clean and/or grind workpiece. (Section 4).
Replace gas cup (nozzle). (Section 6).
Open gas cylinder, regulate gas flow.
Clean or replace cup (Section 6).
Screen off welding site or increase gas flow.
Clean or grind the workpiece (Section 4).
The distance from gas cup to workpiece should be 8-10mm
Check hoses, connections and torch assembly.
Clean out or replace.
Replace gas cup (nozzle). (Section 6).
Check roller tension. (Section 3).
See recommendations for wire speed. (Section 4).
Use correct torch angle.
Check roller tension and adjust as needed. (Section 3).
Increase power and wire speed. (Section 4).
Move torch slower and weave a little more.
Decrease power and wire speed. (Section 4).
Move torch faster and weave less.
Bring torch closer to workpiece.
Increase power and wire speed. (Section 4).
Bring torch closer to workpiece.
Decrease power and wire speed. (Section 4).
Move torch faster.
Torch distance should be 8-10mm.
Adjust tension. (Section 3).
Clean gas cup and contact tip. (Section 6).
01284 757500
Web
01284 703534
Supermig250
www.sealey.co.uk
sales@sealey.co.uk
Issue No: 1 - 03/03/09
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