Mosa Magic Weld 200 - Troubleshooting MOSA Engine Driven Welders; Engine Troubleshooting; Welding Circuit Troubleshooting

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8. Troubleshooting
8. Troubleshooting
8.1 Engine
Issue Possible cause Solution
The engine will not start, or starts
and stops immediately.
1) Engine switch (28) in the OFF posi-
tion.
2)Noorinsu󰀩cientoilintheengine.
3) Faulty engine stop device (oil-alert).
4)Nofuelintankorfueltapclosed.
5) Faulty or dirty spark plug.
6) Engine cold.
7) Other causes.
1)SettheswitchtoON.
2)Rellortopup.
3) Replace.
4) Fill the tank. Open the fuel tap.
5) Clean or check and replace it if
necessary.
6) Keep the CHOKE control in the
“CLOSE” position for a longer period,
after starting the engine
7) Refer to the Engine Operation Man-
ual.
The engine does not speed up.
Inconstant speed.
Poor power output from the engine.
1)Airorfuellterclogged.
2) Poor fuel.
3) Overload.
1)Checktheairlter.
2) Empty the tank and the carburettor.
Fuel up with fresh petrol.
3) Check the connected loads and
reduce them if necessary.
Other engine issues or incon-
veniences
Refer to the Engine Use and Maintenance manual.
8.2 Welding circuit
Issue Possible cause Solution
Lack of no-load voltage during
welding.
1) Faulty welding control board.
2) Faulty Hall sensor.
3) Faulty chopper welding bridge.
4) Faulty alternator.
1) Request the intervention of the
Support Service to replace the
board.
2) Request the intervention of the
Support Service to replace the Hall
sensor.
3) Request the intervention of the
Support Service to replace the
chopper bridge.
4) Disconnect the welding and aux-
iliary output cables, and, using an
ohmmeter, check the electrical re-
sistance of the windings, as shown
in "Table (1)".