GYS FLEX 250 CEL Manual De Instrucciones página 14

T
ROUBLESHOOTING
Anomalies
The device does not deliver any
current and the yellow indicator
thermal default light  is on.
The display is on but the device
does not deliver any current.
If, when the unit is on and you
put your hand on the welding
unit's body, you feel tingling
sensation.
The display is on but the device
does not deliver any current.
When starting up, the display
indicates .
Unstable arc.
The tungsten electrode oxidizes
and tarnishes at the end of the
weld.
The electrode melts.
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Causes
Thermal protection is active.
The earth clamp or electrode
holder is not properly connected
to the unit.
The welding unit is not correctly
connected to the earth.
The cable of the earth clamp or
electrode holder is not connected
to the welder.
The voltage is over the limit
440V +15%.
Failure of the tungsten electrode.
Too important gas flow rate.
Welding zone.
Fault coming from post-gas or
the gas has been
prematurely.
Polarity error.
Remedies
Wait for the end of the cooling
period, approx 2 minutes. The
indicator light  turns off.
Check the connections.
Check the plug and the earth of
your electrical network.
Check the connections.
Have the electrical installation
checked.
Ensure the correct size of electrode
is being used.
Use a well prepared
electrode
Reduce gas flow rate.
Protect welding zone against air
flow.
Check and tighten
stopped
connections. Wait until the electrode
cools down before stopping the gas.
Check that the earth clamp is really
connected to +.
tungsten
all gas
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