Troubleshooting - ESAB Warrior 750i CC/CV Instruction Manual

9 TROUBLESHOOTING

9 TROUBLESHOOTING
Try these recommended checks and inspections before sending for an authorized service
technician.
Type of fault
No display.
Overheating on welding/return cable
connections.
No arc.
The welding current is interrupted during
welding.
The overheating protection trips frequently.
Poor welding performance.
0463 730 001
Corrective action
• Check that the supply is available and
the main switch is turned ON.
• Check the supply fuses/MCB. (See the
"Mains supply" section).
• Press the resettable fuse near to
voltage selector switch in the rear side
of power source.
• Check the electrical connections and
ensure that the welding cables are
tightened properly to the copper bars.
• Check the size of the welding cable.
(See the "Connection of welding and
return cables" section.)
• Check that the main power supply
switch is turned on.
• Check that the mains, welding, and
return cables are correctly connected.
• Check that the correct current value is
set.
• Check the electrical power supply
fuses.
• Check whether the overloading
protection has tripped (indicated on the
front).
• Check the electrical power supply
fuses.
• Check that the return cable is correctly
fastened.
• Make sure that you are not exceeding
the rated data for the power source (i.e.
that the unit is not being overloaded).
• Check that the welding and return
cables are correctly connected.
• Check that the correct current value is
set.
• Check that the correct wire or electrode
is used.
• Check the electrical power supply
fuses.
• Check the gas pressure in the
equipment connected to the power
source.
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