ESAB Warrior 750i CC/CV Instruction Manual page 30

9 TROUBLESHOOTING
Type of fault
"Err" on display in open circuit mode.
Intermittent gouging stops or contact
between carbon and metal lost.
Carbon deposit on the gouge metal.
No arc during start or erratic arc during
gouging.
Intermittent arc action resulting in an irregular
groove surface or copper deposition on the
metal plate.
0463 730 001
Corrective action
• Check the electrical power supply
fuses.
• Check that the voltage on the voltage
selection label, on the rear of the power
source, is equal to the nominal mains
voltage.
• Restart the power source with the main
switch.
• Air pressure too high. Reduce the air
pressure.
• Check whether the air pressure is set to
the recommended value. Check the
manual for the torch used.
• Air pressure too low. Turn on the air
before striking the arc; air should flow
between the electrode and the
workpiece.
• Check whether the air pressure is set to
the recommended value. Check the
manual for the torch used.
• Check whether the voltage is set to the
recommended value.
• Check whether the voltage is set to the
recommended value.
- 30 - © ESAB AB 2021