WIDMANN MIG/TIG/MMA-160 Manuel Utilisateur page 11

5. TROUBLESHOOTING
PROBLEM
The wire does not move, or
wire feed entangles
Main switch indicator light
does not switch on
Welding is not good
Over-heating indicator light
up
CAUSE
Feed rolls, wire conduit or contact tips are defective
Check that feed rolls are not too tight or too loose

Check that the feed roll groove is not too worn

Check that the wire conduit is not blocked

Check that there are no spatters on the conduit tip and

that the hole is not cramped or worn loose
The machine has no supply voltage
Check supply voltage fuses

Check supply voltage cable and plug

Welding outcome is influenced by several factors
Check the welding voltage and wire speed setting

Check that the earth clamp is fixed properly. Fixing

point is clean, and both cable and its connections are
undamaged
Check the flow of shielding gas from the tip of the

welding gun
Supply voltage is uneven, too low or too high

The machine is over-heat
Check that cooling air can flow without obstructions

Machine's volume-capacity ratio has been exceeded;

wait for the indicator light to switch off
The supply voltage is too low or too high

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