ESAB EMP 285ic 3ph - Page 93

TROUBLESHOOTING
9-2
Type of fault
Corrective action
MIG (GMAW/FCAW)
welding problems
• Make sure the MIG torch is connected to the correct
polarity. Refer to the electrode wire manufacturer for the
correct polarity.
• Replace contact tip if it has arc marks in the bore causing
excessive drag on the wire.
• Make sure the correct shielding gas, gas flow, voltage,
welding current, travel speed and MIG torch angle is used.
• Make sure the work lead has proper contact with the work
piece.
MMA (SMAW) basic welding
problems
• Make sure you are using the correct polarity. The electrode
holder is usually connected to the positive polarity and the
work lead to the negative polarity. If in doubt, consult the
electrode data sheet.
TIG (GTAW) welding problems
• Make sure the TIG torch is connected to the power source:
Connect the TIG torch to the negative [-] welding terminal.
Connect the welding ground cable to the positive [+] welding
terminal.
• Use only 100% Argon gas for TIG welding.
• Make sure the regulator/flow meter is connected to the gas
bottle.
• Make sure the gas pipe for the TIG torch is connected to the
gas outlet connector on the front of the power source.
• Make sure the work clamp has proper contact with the
work piece.
• Make sure the gas bottle is opened and check the gas flow
rate on the regulator/flow meter. The flow rate should be
between 10 – 25 CFH (4.7 – 11.8 L/min).
• Make sure the power source is turned on and TIG welding
process is selected.
• Make sure all connections are tight and leak-free.
No power/No arc
• Check that the input power supply switch is turned on.
• Check if a temperature fault is shown on display.
• Check if system breaker is tripped.
• Check that the input power, welding and return cables are
correctly connected.
• Check that the correct current value is set.
• Check the input power supply fuses/breakers.