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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 welding arc frequently “pops
out”. Welding seems otherwise
normal and auxiliary output
voltage appears normal.
The engine will not crank when
the start button is pressed.
The Job selector rheostat may
be set too low.
If a remote control is being used,
try switching to local control.
The remote control unit may be
faulty.
Check welding cables for
damaged or poor connections.
Welding cable may be
excessively long, too small, or
coiled. Try using a set of short
test cables of adequate size.
The batteries may be
discharged. Check, and if
necessary, charge or replace the
batteries.
The battery cables or battery
connections may be loose or
corroded. Service the battery
terminals.
The engine RPM may be
incorrect; perform the Engine
RPM Adjustment Test.
Perform the Brush and Slip
Ring Service Procedure.
Perform the Welding Generator
Brush and Commutator
Inspection and Service
Procedure.
Perform the Output control unit
Inspection and Service
Procedure.
Perform the Exciter Rotor
Voltage Test.
Perform the Shunt Field Circuit
Voltage Test.
Check that the rocker is aligned
to the factory drill mark, and
perform the Rocker Adjustment
Procedure if necessary.
Check for battery voltage where
lead 235 connects to the starter
solenoid, while holding in the
start button.
• If no voltage is present, check
the connections and wiring
connecting the starter
solenoid, the ammeter, and
the start push button switch.
(See the wiring diagram) If
the wiring and connections
are good, replace the push
button switch.
TROUBLESHOOTING AND REPAIR
F-11 F-11
SAE-400 SEVERE DUTY
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