24
Fault Possible cause Remedy
Insucient shielding
gas
Welding torch leaking Check, replace if necessary
Gas hose not securely connected Connect the gas hose securely
Pressure reducer incorrectly set or
defective
Check, replace if necessary
Pores in weld material Welding torch leaking Check, replace if necessary
Gas nozzle not securely connected Connect the gas nozzle securely
Torch head defective Check, replace if necessary
Workpiece soiled with grease, rust, oil,
etc.
Clean
Draughts Shield the workplace
Seam "boils" (unsteady
arc)
No gas supply Check
Wrong gas Use the correct gas
TIG electrode melts Welding current set too high for electrode
diameter
Set the correct welding current
Poles reversed and TIG torch connected
to +ve pole [4]
Connect TIG torch to the -ve pole [3]