Würth MIG 180-5S Mode D'emploi Original page 37

No. Symptom
The yellow
1
Indicator is lit
Wire feeding motor
2
doesn't work
Cooling fan not
3
working or turning
very slowly
Arc is not stable
4
and splash is large
Pilot arc cannot be
5
made
6
No shielding gas
7
Other symptoms
Description
Input power [V]
Frequency [Hz]
Rated input current [A]
Rated input capacity [KVA]
No-load voltage [V]
Rated working voltage [V]
MIG welding current [A]
Rated duty cycle [%]
Welding current (10min) [A]
10min/100% [A]
Efficiency [η]
Power factor [Cosφ]
Insulation class
Enclosure protection IP
Cooling method
Weight [kg]
Troubleshooting Chart
Possible Cause
Mains voltage too high (≥15%)
Mains voltage too low (≤15%)
Bad unit ventilation leads
to overheat protection
Current temperature too high
Over rated duty-cycle used
Potentiometer is not working properly
Nozzle blocked up
Feed roller loosen
Switch broken
Fan broken
Wire broken or falling off
Too large contact tip makes the current
unsteady
Too thin gauge power cable
makes the power supply unsteady
Input voltage too low
Wire feeding resistance is too large
Earth cable connection not established
The workpiece is dirty, rusty or stained
Torch is not well connected
Gas pipe is squeezed or blocked up
Gas hose fittings not tightened enough
Technical Data
Solutions
Switch off the welder; Check the mains supply; Turn on welder when power
restores to normal state.
Improve ventilation conditions.
Welder automatically recovers when the temperature falls down.
Change the potentiometer.
Change the nozzle.
Tide up the bolts.
Replace the switch.
Replace or repair the fan.
Check the connection.
Change (provide the proper) contact tip or roller.
Change the power cable.
Enhance the input voltage.
Clean or replace the liner and the torch cable to have better in line direction.
Connect the earth cable properly.
Clean greasy, dirty or rusty stains.
Connect the torch properly.
Check gas supply system.
Refit gas hose and tighten all couplers properly.
Please contact manufeturor.
Specifications
220
50/60
32
7.4
65
23
30 – 180
25
25%@180
90
85%
0.75
F
21S
Fan cooled
15
230
50/60
32
7.4
68
23
30 – 180
25
25%@180
90
85%
0.75
F
21S
Fan cooled
15
37