Troubleshooting - LORCH MicorTIG 200 DC BasicPlus Manual De Instrucciones

Troubleshooting

21 Troubleshooting
Fault
Arc does not No or poor ground contact
ignite
Incorrect electrode diameter
Welding current set too low
Tungsten electrode soiled or incorrectly ground
Gas volume set incorrectly
No inert gas Gas cylinder empty
Pressure reducer defective
Gas valve on torch not opened or defective
Too little inert Torch not tight
gas
Gas hose not tight
Pressure reducer set incorrectly or defective
Pores in weld Torch not tight
metal
Gas nozzle not tight
Torch head faulty
Workpiece soiled with grease, rust, oil, etc.
Draught
Seam "cook- Gas supply missing
ing" (unsteady
Incorrect gas
arc)
TIG electrode Welding current set too high for electrode diam-
melting eter
Polarity reversed and TIG torch connected to
positive terminal 3
Tab. 6: Troubleshooting
04.19
Possible cause
909.4039.9-03
Rectification
Ensure ground contact
Select correct electrode diameter
Set welding current higher
Grind correctly or replace the
electrode if necessary
Set gas volume correctly
Replace gas cylinder
Check and replace if necessary
Check and replace if necessary
Check and replace if necessary
Tighten gas hose
Check and replace if necessary
Check and replace if necessary
Tighten gas nozzle
Check and replace if necessary
Clean it
Shield workplace
Check
Use correct gas
Set the correct welding current
Connect the TIG torch to negative
terminal 6
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