GISS TIG 200 A HF AC/DC Notice Originale page 23

TROUBLESHOOTING
Symptom
The device does not deliver any current
and the yellow thermal default light
on.
The display is on but the device does not
deliver any current.
When starting up, the display indicates
for one second and turns off.
Unstable arc
The tungsten electrode oxidizes and tarni-
shes the end of the weld.
The electrode melts
Translation of the original instructions
TIG 200 A HF AC/DC
Causes
is Thermal protection is on.
The earth clamp or electrode
holder is not properly connected to
the unit.
The voltage is not included in the
range 85-265V
Failure of the tungsten electrode
Gas flow is too high
Unprotected welding zone
Failure of post-gas
Polarity error
Remedies
Wait for the end of the cooling
period, approx. 2mins. The light
will turn off.
Check the connections
Check the electrical installation.
Ensure the correct size of Elec-
trode is being used.
Use a well prepared tungsten
electrode
With weak currents, increase the
frequency
Reduce gas flow rate
Protect welding zone against air
flow (Post-gas) whilst cooling.
Increase duration of post-gas.
Check and tighten all gas connec-
tions
Check that the earth clamp is pro-
perly connected to +ve
Balance too significant, frequency
too low
EN
23