Troubleshooting - LORCH HandyTIG 180 DC ControlPro Manuel D'utilisation

18

Troubleshooting

Symptom
no ignition of acr
no shielding gas
too less shielding gas
pores in welding seam
weld pool 'boils' (unsteady arc)
TIG electrode is melting
- 40 -
Cause
no or bad ground contact
wrong electrode diameter
welding current too low
Tungsten electrode dirty or not grinded
properly
wrong amount of gas flow
gas cylinder empty
pressure reducer defect
gas valve at torch not open or defect
torch leaking
gas hose not tight
pressure reducer set wrong or defect
torch leaking
gas nozzle not tight
torch head defect
workpiece dirty
draught
no shielding gas supply
wrong gas
welding current too high
TIG torch is connected to positive pole
connector 7
Troubleshooting
Remedy
check ground cable, ground clamp
use right electrode
increase welding current
grind electrode of use a different one
set gasflow correctly
replace gas cylinder
replace pressure reducer
check, replace if necessary
check, replace if necessary
tighten gas hose
check, replace if necessary
check, replace if necessary
tighten gas nozzle
check, replace if necessary
clean workpiece
shield work area
check
use right gas type
decrease welding current
connect torch to negative pole 8
10.15