23
Troubleshooting chart
No.
Symptom
Possible cause
Solutions
1
The yellow
Indicator is lit
Mains voltage too high
(≥15%)
Switch off the welder; Check the
mains supply; Turn on welder when
power restores to normal state.
Mains voltage too low
(≤15%)
Bad unit ventilation leads to
overheat protection
Improve ventilation conditions.
Current temperature too high
Welder automatically recovers when
the temperature falls down.
Using over the rated duty-
cycle
Welder automatically recovers when
the temperature falls down.
2
Wire feeding
motor doesn’t
work
Potentiometer is not working
properly
Change the potentiometer.
Nozzle blocked up
Change the nozzle.
Feed roller loosen
Tide up the bolts.
3
Cooling fan not
working or
turning very
slowly
Switch broken
Replace the switch.
Fan broken
Replace or repair the fan.
Wire broken or falling off
Check the connection.
4
Arc is not
stable and
splash is large
Too large contact tip makes
the current unsteady
Change (provide the proper) contact
tip or roller.
Too thin gauge power cable
makes the power supply
unsteady
Change the power cable.
Input voltage too low
Enhance the input voltage.
Wire feeding resistance is too
large
Clean or replace the liner and the
torch cable to have better in line
direction.
5
Pilot arc cannot
be made
Earth cable connection not
established
Connect the earth cable properly.
The workpiece is dirty, rusty
or stained
Clean greasy, dirty or rusty stains.
6
No shielding
gas
Torch is not well connected
Connect the torch properly.
Gas pipe is squeezed or
blocked up
Check gas supply system.
Gas hose fittings not
tightened enough
Refit gas hose and tighten all couplers
properly.
7
Other
symptoms
Please contact manufeturor.
Summary of Contents for MIG 180-5
Page 20: ...22 C Lift the welding torch to the normal position to initiate the arc and start welding ...
Page 22: ...24 Spare parts listing ...
Page 49: ...51 Κατάλογος ανταλλακτικών ...
Page 74: ...76 Sklopni crtež rezervnih delova ...
Page 99: ...101 Sklopni crtež rezervnih delova ...
Page 127: ...129 Skica notranjosti naprave ...