How To Use Troubleshooting Guide; Troubleshooting - Lincoln Electric SP-100 Service Manual

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HOW TO USE TROUBLESHOOTING GUIDE

Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician and
machine operator and will invalidate your factory warranty. For your safety and to avoid
Electrical Shock, please observe all safety notes and precautions detailed throughout this
manual.
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This Troubleshooting Guide is provided to help you locate and correct possible machine
malfunctions or misadjustments. Simply follow the three-step procedure listed below.
Step 1. LOCATE PROBLEM (SYMPTOM).
Look under the column labeled "PROBLEM
(SYMPTOMS)". This column describes pos-
sible symptoms that the machine may
exhibit. Find the listing that best describes
the symptom that the machine is exhibiting.
Symptoms are grouped into the following
categories: Output Problems; Feeding
Problems; Gas Flow Problems; and
Welding Problems.
Step 2. PERFORM EXTERNAL TESTS.
The second column labeled "POSSIBLE
AREAS OF MISADJUSTMENT(S)" lists the
obvious external possibilities that may con-
tribute to the machine symptom. Perform
these tests/checks in the order listed. In
general, these tests can be conducted with-
out removing the case wrap-around cover.
SP-100
TROUBLESHOOTING & REPAIR
If for any reason you do not understand the test procedures or are unable to Perform
the tests/repairs safely, contact your LOCAL AUTHORIZED LINCOLN ELECTRIC
FIELD SERVICE FACILITY for assistance before you proceed. Call 216-383-3531
or 1-800-833-9353
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WARNING
Step 3. PERFORM COMPONENT TESTS.
The last column labeled "Recommended
Course of Action" lists the most likely com-
ponents that may have failed in your
machine. It also specifies the appropriate
test procedure to verify that the subject
component is either good or bad. If there
are a number of possible components
check the components in the order listed to
eliminate one possibility at a time until you
locate the cause of you problem.
All the needed test specifications and repair
procedures are described in detail on the
referenced pages. All the needed electrical
test points, terminal strips, junctions, etc.,
can be found on the referenced electrical
wiring diagrams and schematics. See
Electrical Diagram Section.
CAUTION