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TROUBLESHOOTING & REPAIR | |||||
| HOW TO USE TROUBLESHOOTING GUIDE |
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| WARNING |
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Service and Repair s | hould 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 | Step 3. RECOMMENDED |
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COURSE OF ACTION |
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help you locate and repair possible machine | The last column labeled “Recommended | ||||
malfunctions. Simply follow the | |||||
procedure listed below. |
| Course of Action” lists the most likely com- | |||
| ponents that may have failed in your | ||||
Step 1. LOCATE PROBLEM (SYMPTOM). | machine. It also specifies the appropriate | ||||
Look under the column labeled “PROBLEM | test procedure to verify that the subject com- | ||||
(SYMPTOMS)”. This column describes pos- | ponent is either good or bad. If there are a | ||||
sible symptoms that the machine may exhib- | number of possible components, check the | ||||
it. Find the listing that best describes the | components in the order listed | to eliminate | |||
symptom that the machine is exhibiting. | one possibility at a time until you locate the | ||||
Symptoms are grouped into the following | cause of your problem. |
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categories: output problems, function prob- | All of the referenced test procedures | ||||
lems, | wire feeding problems, and | welding | |||
problems. |
| referred to in the Troubleshooting Guide are | |||
| described in detail at the end of this chapter. | ||||
St p 2. PERFORM EXTERNAL TE TS. | Refer to the Troubleshooting and Repair | ||||
The second column labeled “POSSIBLE | Table of Contents to locate each specific | ||||
AREAS OF MISADJUSTMENT(S)” lists the | Test Procedure. All of the specified test | ||||
obvious external possibilities that may con- | points, components, terminal strips, etc. can | ||||
tribute to the machine symptom. | Perform | be found on the referenced electrical wiring | |||
these | tests/checks in the order listed. In | diagrams and schematics. Refer to the | |||
general, these tests can be conducted with- | Electrical Diagrams Section Table of | ||||
out removing the case | Contents to locate the appropriate diagram. | ||||
CAUTION
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