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Troubleshooting, Electronic idler control troubleshooting guide, Caution – Lincoln Electric IM659 CLASSIC 300G User Manual

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E-5

TROUBLESHOOTING

CLASSIC 300G

E-5

ELECTRONIC IDLER CONTROL TROUBLESHOOTING GUIDE

With Idler Control Switch in the AUTO Position,Engine Will Not Pick Up Speed When:

Auxiliary Load

1. Load too small. Try load

above 150 Watts.

2. Check for loose or

disconnected wire running
from black lead out of exciter
to CB2 circuit breaker.

The Arc is Struck

Check for loose or disconnected
wire running between weld
selector switch and output stud.

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

CAUTION

Both

1. Check Idler circuit wiring. Possible

problems are wires from Current
Sensing Board reversed at idler
switch or wires connected incorrectly
at Current Sensor Molex plug.

2. Replace current Sensing Board.