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OUTPUT PROBLEMS
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely,
contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed.
Call 1-888-935-3877.
CAUTION
The weld output varies
abnormally. Auxiliary voltage is
normal. (continued)
Examine polarity switch for poor
electrical connections and
damaged or burned contacts.
Replace if necessary. If polarity
switch contacts have excessive
arc damage, check the 500 Ohm
resistor.
Perform the Exciter Rotor
Resistance and Ground Test.
Perform the Shunt Field Coil
Resistance and Ground Test.
Check the Generator brush
rocker position; perform the
Rocker Adjustment Procedure
if necessary.
TROUBLESHOOTING AND REPAIR
F-7 F-7
SAE-400 SEVERE DUTY
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