6 | TROUBLESHOOTING & REPAIR | 6 |
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HOW TO USE TROUBLESHOOTING GUIDE
WARNING
This Troubleshooting Guide is designed to be used by qualified service 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, please observe all safety notes and precautions detailed in the Safety Sections of this manual to avoid electrical shock or danger while troubleshooting this equipment.
This Troubleshooting Guide is provided to help you locate and repair possible problems.
Step 1. LOCATE PROBLEM (SYMPTOM) Look under the column labeled “PROBLEM (SYMPTOMS)”. This column describes possible symptoms that your unit may exhibit. Find the listing that best describes the symptom that your machine is exhibiting.
Step 2. Check Possible Causes
The second column labeled “POSSIBLE
CAUSES/REMEDIES” lists typical possibilities that may contribute to the machine symptom. Perform these checks and remedies in the order listed.
Step 3.
If you have exhausted all of the recommended checks in step 2, contact the Lincoln Electric Customer Service Department.
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
MASTER LOAD 750
