Yeswelder CT2050 Operator's Manual page 51

TROUBLESHOOTING
TIG WELDING ISSUES
PROBLEM
No gas, incorrect gas flow.
Poor work clamp connection.
HF TIG doesn't initi-
ate an arc:
Contaninated Tungsten.
Loose connection.
Earth clamp not connected to work.
Incorrect Gas/Inadequate gas flow.
Tungsten burning
away quickly.
Back cap not fitted correctly.
Incorrect tungsten being used.
Touching tungsten into the weld pool.
Touching the filler wire to the tungsten.
Contaminated tung-
sten.
Tungsten melting into the weld pool.
POSSIBLE CAUSE COURSE OF ACTION
Check the gas is connected and cylinder valve open, check
hoses, gas valve and torch are not restricted. Set the gas
flow between 20-30 cfh flow rate.
Check & secure work clamp.
Grind to ctean Tungsten.
Check all connectors and tighten.
Connect the work clamp directly to the work piece wher-
ever possible.
Check the gas cylinder contains pure Argon gas and is
connected and the torch gas valve is open. Set the gas
flow between 20-30cfh flow rate.
Make sure the torch back cap is fitted so that the o-ring is
inside the torch body.
Check and change the tungsten type if necessary.
Keep tungsten from contacting weld puddle. Raise the
torch so that the tungsten is off of the work piece 1/8-1/4.
Keep the filler wire from touching the tungsten during
welding, feed the filler wire into the leading edge of the
weld pool in front of the tungsten.
Check that correct type of tungsten is being used. Too
much current for the tungsten size so reduce the amps or
change to a larger tungsten.
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