LORCH Handy 200 BasicPlus Manuel D'utilisation page 40

16 Troubleshooting guide
16 .1 Troubles during welding
Symptom
Displays remain dark mains fuse defect
No welding current
no ignition of acr
no shielding gas
too less shielding gas torch leaking
pores in welding
seam
weld pool 'boils' (un-
steady arc)
TIG electrode is
melting
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Cause
neutral, mains phase missing
ground cable not connected or
defect
electrode holder or torch not con-
nected or defect
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 check, replace if necessary
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 guide
Remedy
exchange mains fuse
check mains cable / mains
extension cable
check ground cable, exchange
if necessary
check electrode holder or torch,
exchange if necessary
check ground cable, ground clamp
use right electrode
increase welding current
grind electrode of use a diffe-
rent one
set gasflow correctly
replace gas cylinder
replace pressure reducer
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
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