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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 is considerably
less than indicated on the dials
or varies abnormally. Auxiliary
output appears normal.
(Continued)
N/A
Perform the Shunt Field Coil
Resistance and Ground
Test.
Check the Generator brush
rocker position; perform the
Rocker Adjustment
Procedure if necessary.
The weld output is considerably
higher than indicated on the
dials. Auxiliary voltage appears
normal.
If a remote current control is
being used, try switching to
local control. The remote
current control may be faulty.
The engine RPM may be too
high; perform the Engine RPM
Adjustment Test.
There may be a short circuit in
the series field coils. Perform
the Weld Circuit Ground and
Short Circuit Test and Series
Coil Short Circuit Test.
Perform the Exciter Rotor
Resistance and Ground Test.
Perform the Shunt Field Coil
Resistance and Ground Test.
Verify that the rocker is
positioned correctly, according
to the factory drill mark.
Perform the Rocker
Adjustment Procedure if
necessary.
TROUBLESHOOTING AND REPAIR
F-8 F-8
CLASSIC® 300D & 300G
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