Troubleshooting Guide - Lincoln Electric SAE-300 HE Service Manual

LINCOLN ELECTRIC

Troubleshooting guide

Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
Major physical or electrical
damage is evident when the
sheet metal covers are
removed.
Both the weld and auxiliary
output voltages are low.
There is no or very low weld
output and no auxiliary output.
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the
Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
OUTPUT PROBLEMS
1. Contact your local
authorized Lincoln Electric
Service Facility.
1. Make sure the engine is
operating at the correct high
idle speed.
2. Make sure that no load is
connected to either the weld or
auxiliary outputs.
1. Check that the remote/local
switch is in the local control
position.
2. Check that the auxiliary
power circuit breakers and
GFCIs (if so equipped) are not
tripped.
NOTE: GFCIs will not reliably
reset, unless engine is
operating at high idle RPM.
3. Check all leads and cables
for damaged or poor
connections.
SAE-300® HE Service Manual
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. Contact the Lincoln Electric
Service Department at 1-888-
935-3877.
1. Perform the Brush And Slip
Ring Service Procedure (Exciter
/ Auxiliary Power Alternator).
2. Perform the Exciter Rotor
Voltage Test Procedure.
3. Perform the Exciter Rotor
Resistance And Ground Test
Procedure (Exciter / Auxiliary
Power Alternator).
1. Perform the Brush And Slip
Ring Service Procedure (Exciter
/ Auxiliary Power Alternator).
2. Perform the Exciter Rotor
Voltage Test Procedure.
3. Perform the Exciter Rotor
Resistance And Ground Test
Procedure (Exciter / Auxiliary
Power Alternator).
4. Perform the Flashing
Voltage Test Procedure.
5. Perform the Exciter Stator
Short Circuit And Ground Test
Procedure.
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