Troubleshooting - Kemppi Flexlite TX Operating Manual

5.1 Troubleshooting

The problems and the possible causes listed are not definitive, but suggest some typical situations that may turn up dur-
ing normal use of the welding system. For further information and assistance, contact your nearest Kemppi service
workshop.
General:
The welding system does not power up
• Check that the mains cable is plugged in properly.
• Check that the mains switch of the power source is at the ON position.
• Check that the mains power distribution is on.
• Check the mains fuse and/or the circuit breaker.
• Check that the earth return cable is connected.
The welding system stops working
• The torch may have overheated. Wait for it to cool down.
• Check that none of the cables is loose.
• The power source may have overheated. Wait for it to cool down and see that the cooling fans work properly
and the air flow is unobstructed.
Welding torch:
The torch overheats
• Make sure the torch body is properly connected.
• Make sure that the welding parameters are within the range of the welding torch. If different torch components
have separate limits for the maximum current; the lower one of these is the maximum current that can be used.
• Make sure the coolant circulation is working normally (see the coolant circulation warning LED on the power
source).
• Measure the coolant circulation speed: detach the coolant output hose from the cooler unit when the power
source is on, and let the coolant run into a measurement cup. The circulation must be at least 0.5 l/min.
• Make sure you are using original Kemppi consumable and spare parts. Incorrect spare part materials may also
cause overheating.
• Make sure the connectors are clean, undamaged and properly fastened.
Weld quality:
Dirty and/or poor weld quality
• Check that the shielding gas has not run out.
• Check that the shielding gas flow is unobstructed.
• Check that the gas type is correct for the application.
• Check the polarity of the torch/electrode.
• Check that the welding procedure is correct for the application.
Varying welding performance
• Check the welding electrode size, type and wear.
• Check that the welding torch is not overheating.
• Check that the earth return clamp is properly attached to a clean surface of the workpiece.
Arc is not ignited
• Cable is loose or there is a bad connection.
• The torch electrode is highly oxidized. Sharpen again lengthwise. Check that the post gas time is long enough.
Check ignition by using pre gas.
• There are impurities in shielding gas (moisture, air).
© Kemppi
23
Flexlite TX
Operating manual - EN
1920910 / 2039