Migatronic DELTA 140 E, Instruction Manual

Page: 19 / 96

19
FAULT LOCATION
Repairs must only be carried out by Migatronic staff.
Fault symptoms:
The machine does not work:
There may be no mains supply or the mains fuse is damaged. Check that both mains supply and
mains fuse are intact.
Check that welding cables are correctly mounted in the plugs.
Check that the cables are not defective and that there is sufficient earth connection as close as
possible to the workpiece to be welded.
Overheat:
The yellow LED will alight, if the machine is overloaded. This occurs
- if welding with a higher load than permitted,
- if the machine requires cleaning, or
- if the air intake and/or outlet of the machine is completely or partially blocked.
Check that the machine is not overloaded, cf. ”Technical data” and/or clean cooling ribs by use of
clean, dry compressed air after disconnecting the machine from the incoming mains supply.
The machine does not produce maximum welding output :
Check the mains voltage being connected to the machine. Performance depends on correct mains
voltage. Voltage is measured where the machine is connected to any extension cables.
It may be caused by the fact that the machine is connected with too long cables, and if possible,
only primary and secondary cables should be reduced as much as possible.
The machine switches off, but not because of overheating:
Too low or unstable mains voltage which may be combined with the use of too long or too thin ex-
tension cable.
Check mains voltage and connection.
If rectification of the fault is not possible:
Contact your dealer – the machine may be defective