Sealey MIGHTYMIG150 - Manual (Page 7)

7. TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REMEDY
1. Power source stops Overheating protection activated due to overload Protection automatically resets when transformer has cooled (about 15 min)
2. No weld current Rectifier blown Replace rectifier.
3. No weld current Bad connection between clamp & 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
4. Feed motor not working, lamp is on
Gear damaged or worn Replace gears. (Contact service agent)
Motor defective Replace motor (Contact service agent)
PCB fault Replace PCB
5. Wire does not feed, feed roller rotates Pressure roller improperly adjusted Adjust tension.
Dirt, copper, dust, etc, has collected in torch liner Clean the liner from the machine forward. Use compressed air. If too much dirt,
replace the liner.
Gas cup (Nozzle) or tip defective Replace gas cup (nozzle) and/or tip. (Section 4.1.8 to 4.1.11)
Deformed wire Check roller tension and adjust it if necessary (Section 4.2)
6. 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 4.1.8 to 4.1.11).
Gas cup (Nozzle) spattered Clean or replace gas cup (nozzle) (Section 4.1.8 to 4.1.11)
Feed roller groove clogged Clean feed roller.
Feed roller groove deformed Replace feed roller.
Pressure roller tension improper Adjust tension. (Section 4.2)
7. Unstable arc Incorrect settings Check settings.
Impurities in weld area Clean and/or grind workpiece.
Worn or defective gas cup (nozzle) Replace gas cup (nozzle). (Section 4.1.8 to 4.1.11)
8. Porous weld No gas Open gas cylinder, regulate gas flow
Gas cup clogged Clean or replace cup. (nozzle) (Section 4.1.8 to 4.1.11)
Draft blowing away shielding gas Screen off welding site or increase gas flow
Rusty or dirty joints Clean and/or grind workpiece. (Section 4.1.1)
Torch too far from or at wrong angle to work The distance from gas cup to workpiece should be 8 to 10mm
Gas leak Check hoses, connections and torch assembly. Press the gas cup into correct
position
Faulty Electrovalve Clean out or replace
9. Electrode sticking in gas cup (nozzle) Worn or defective gas cup (nozzle) Replace gas cup (nozzle). (Section 4.1.8 to 4.1.11)
Electrode deformed Check roller tension. (Section 3.10)
Wire speed too slow See recommendations for wire speed
10. Irregular weld head Torch incorrectly held Use correct torch angle
Wire weaving in weld pool Check roller tension and adjust as needed. (Section 4.2)
11. Weld bead too narrow and raised Weld current too low Increase power and wire speed.
Weld speed too high Move torch slower and weave a little more
12. Weld bead too wide Weld current too high Decrease power and wire speed.
Weld speed too low Move torch faster and weave less
Arc too long Bring torch closer to workpiece
13. Poor penetration Weld current too low Increase power and wire speed.
Arc too long Bring torch closer to workpiece
14. Excessive penetration Weld current too high Decrease power and wire speed.
Weld speed too slow Move torch faster
incorrect distance of torch to workpiece Torch distance should be 8-10mm
Parts support is available for this product. To obtain a parts listing and/or diagram,
please log on to www.sealey.co.uk, email [email protected] or phone 01284 757500.
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 product.
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.
01284 757500
01284 703534 [email protected]
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park ,
Bury St. Edmunds, Suffolk,
IP32 7AR
www.sealey.co.uk
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Original Language Version MIGHTYMIG150 Issue: 2 - 26/02/10