26
Initial problems diagnosis
Abnormal Items
Check points and Maintenance
No arch
No Gas out
No Wire Feeding
Bad Arc Ignition
Unstable Arc
Dirt on Edge of Weld Sea
Wire Stick to Parent
Wire Stick to Conductive Tip
Blowhole Formed
Wire Feeder
1. Wire spool does not match the diameter of wire in
guide tube
2. Defective wire feeding wheel or groove blocked
3. Handle too tight or loose
4. Metal powder accumulated on the inlet of SUS
hose
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Weld Gun and Cable
1. Welding gun cable twisted
2. Wear, blockage or deformation in the welding gun
assembly (contact tip, gas hose, cable, etc.)
〇〇〇 〇
Body of welding gun
1. Loose connection of contact tip, nozzle and nozzle
contactor
2. Contactor of welding gun body is not properly
inserted or tightened
〇〇
Power supply cable of
welding gun as well
as cable of switch
control
1. Wear caused by improper cable winding
2. Damaged by weighted drop
〇〇〇 〇 〇
Wire length and
conditions of related
material
1. Oil, dirt, rust and paint residues
2. Wire too long
〇〇〇〇 〇
Output Cable
1. Insufficient section of cable connected to related
materials
2. Poor connection to(+), (-) output cable
3. Poor electric conductivity of related materials
〇〇〇
Lengthened Cable
1. Insufficient cable section
2. Folded or twisted cable
〇〇〇〇
Welding Work
Conditions
Welding current, voltage, angle of welding gun,
welding rate and wire length should be confirmed
once again
〇〇〇〇〇
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