ims PRO TIG 200 AC/DC Mode D'emploi page 17

TROUBLESHOOTING
Symptom
The device does not deliver any
current and the yellow thermal
default light is 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 tarnishes the end of the weld.
The electrode melts
Causes
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 230V +/- 15% for the TIG
200 L AC/DC or 85-265V for the
TIG 200 AC/DC
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 Electrode
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
connections
Check that the earth clamp is
properly connected to +ve
Balance too significant, frequency
too low
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