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E-3
TROUBLESHOOTING
E-3
MULTI-SOURCE
Observe all Safety Guidelines detailed throughout this manual
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
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
Machine output doesn’t stay on.
(Amber Thermal light on, fan run-
ning, digital Output display never
reads greater than 100)
Machine output doesn’t stay on.
(Amber Thermal light on, fan not
running, digital Output display
never reads over 100)
Machine will not shut off.
1. Cooling air blocked or limited.
2. Faulty output lead thermostat,
SCR heat sink thermostat or
connecting leads.
3. Ambient cooling air too hot.
1. Faulty cooling fan or wiring.
2. Faulty wiring in shunt circuit.
(Digital Output display reads
near zero.)
3. Faulty Control board.
4. 115 Vac winding on main trans-
former not providing voltage.
5. Fan circuit breaker on front con-
trol panel is tripped.
1. Input contactor (CR1) contacts
are frozen.
2. Defective POWER switch (S1).
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.