GYS CEL 250 TRI Manual De Instrucciones página 14

Instable arc
The tungsten electrode gets oxidised and
tern at the end of welding.
The electrode melts
Default coming from the
tungsten electrode
Too important gas flow
rate
Welding zone
Default coming from
post-gas or the gas has
been stopped
prematurely.
Polarity error
Use a tungsten electrode with the
adequate size
Use a well prepared tungsten
electrode
Reduce gas flow rate
Protect welding zone against air
flows
Increase post-gas duration
Check and tighten
connections. Wait until
electrode cools down
stopping the gas.
Check that the earth clamp is really
connected to +
all gas
the
before
14/43