Gtaw (Tig) Trouble Shooting - Weldtronic TM250C Operating Manual

4.3 GTAW (TIG) Welding Trouble Shooting
The following chart addresses some common problems during TIG Welding.
In the event of equipment malfunction, contact an authorized service agent
Possible Reason
Tungsten burning Quickly
Incorrect Gas or No Gas
Insufficient Gas Flow
Back Cap not fitted correctly
Torch connected to (+) connection
Wrong Tungsten
Tungsten oxidizing after weld
Contaminated Tungsten
Touching Tungsten into Weld Pool
Touching Filler wire to Tungsten
Tungsten Melting
Porosity
Incorrect Gas or No Gas
Insufficient Gas Flow
Contaminated base metal
Contaminated TIG Wire
Unstable Arc
Torch connected to (+) connection
Contaminated base metal
Contaminated Tungsten
Arc length too long
Wandering Arc
Incorrect Gas or No Gas
Wrong Tungsten
Poorly prepared Tungsten
Contaminated base metal
Contaminated TIG Wire
Difficulty Starting Arc
Incorrect Gas or No Gas
Contaminated Tungsten
Wrong Tungsten
Loose connection
Earth Clamp not connected
TitanMig AU 250C Manual_ Issue A 0415
Suggested Solution
Check Pure Argon is in use
Check gas flow. Set to 10-15 l/min
Check Back cap is fitted correctly and o ring in tact
Refit torch to (-) connection
Check Colour of tungsten & change to correct type
Post gas insufficient. Gas flow suggested 10-15 S after end of weld cycle
Keep tungsten raised to 2-5mm of workpeice
Feed filler into the leading edge of the weld pool
Check Type & Size Tungsten being used
Check Pure Argon is in use
Check gas flow. Set to 10-15 l/min
Remove any paint , grease, oil & dirt
Use clear dry rust free wire only.
Refit torch to (-) connection
Remove any paint , grease, oil & dirt
Cut & re-grind Tungsten
Keep torch raised to 2-5mm of workpeice
Check Pure Argon is in use
Check Colour of tungsten & change to correct type
Ensure Tungsten is ground lengthways
Remove any paint , grease, oil & dirt
Use clear dry rust free wire only.
Check Pure Argon is in use
Cut & re-grind Tungsten
Check Colour of tungsten & change to correct type
Check connections
Connect earth clamp to the work piece
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