Troubleshooting/Diagram - Kemppi KEMPOMIG 3200 Service Manual

Troubleshooting
The device may be repaired only by a person legally authorized perform electric work!
Always check the device visually first, to find possible damages like loose wires, breaks or
signs of overheating.
.
Also note the condition of the welding cables, welding gun and wire feed mechanism.
Troubleshooting diagram
DISTURBANCE
The machine won´t start. WF-
unit´s displays remain blank.
The fuses blow during machine
startup.
The machine welds, but displays
remain blank.
Power source stays on MMA,
even though MIG is selected by
the panel.
POSSIBLE CAUSE
Net fuse has blown
Faulty supply cable
Faulty main switch
Faulty aux. transformer
Faulty intermediate cable
A faulty primary side power
semiconductor
A faulty main circuit card
A faulty aux. transformer
A faulty secondary unit
Faulty flat cable
Faulty operating panel
Faulty flat cables
Faulty synergy card P002
REMEDY
Check the net fuses
Check the supply cable
Check the main switch
Check the aux. transformer
Check the intermediate cable
between power source and wf-unit
Check the primary rectifier and
IGBT-module condition
Check the load capacitors. See, if
there are marks of insulation
damages on the main circuit card.
Check the aux. transformer
Check the secondary diodes
Check flat cables & connectors
between control card A001 and
operating panel.
Replace the operating panel
Check flat cables & connectors
between control card A001 and
operating panel.
Disconnect the flat cable from P002
synergy card. As a result of this, if
the power source goes to MIG, then
replace the P002.
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