Troubleshooting - Kemppi MasterMig 353 Operating Manual

4.4 Troubleshooting

The problems listed and the possible causes are not definitive, but suggest some typical situations that may turn up
during normal use of the welding system.
Welding device:
Problem
The welding device does not power up
The welding device stops working
Wire feeding:
Problem
The filler wire on the spool unravels
The wire feed mechanism does not feed the filler wire
Weld quality:
Problem
© Kemppi
Recommended actions
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 interconnection cable between the power
source and the wire feeder is intact and properly attached.
Check that the earth return cable is connected.
Gas-cooled gun may have overheated. Wait for it to cool down.
Check that none of the cables is loose.
The wire feeder may have overheated. Wait for it to cool down
and see that the welding current cable is properly attached.
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.
Recommended actions
Check that the spool locking cover is closed.
Check that the filler wire has not run out.
Check that the filler wire is properly routed through the feed
rolls to the wire liner.
Check that the pressure handle is properly closed.
Check that the feed roll pressure is adjusted correctly for the
filler wire.
Check that the welding cable is properly connected to the wire
feeder.
Blow compressed air through the wire liner to check that it is
not blocked.
Recommended actions
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MasterMig 353, 355
Operating manual- EN
1921960 / 2217