How To Use Troubleshooting Guide - Lincoln Electric POWER FEED 84 Service Manual

POWER FEED 84, POWER FEED 84 DUAL

HOW TO USE TROUBLESHOOTING GUIDE

Service and repair should be performed by only 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.
This Troubleshooting Guide is provided to help you locate
and repair possible machine malfunctions. Simply follow the
three-step procedure listed below.
Step 1. LOCATE PROBLEM (SYMPTOM). Look under the
column labeled "PROBLEM" (SYMPTOMS). This column
describes possible symptoms that the machine may exhibit.
Find the listing that best describes the symptom that the
machine is exhibiting. Symptoms are grouped into six main
categories: Function Problems, Welding Problems, Output
Problems, Wire Feeding Problems, Error Codes and Arclink
System Error Codes.
Step 2. PERFORM EXTERNAL TESTS. The second column,
labeled "POSSIBLE AREAS OF MISADJUSTMENT(S)", lists
the obvious external possibilities that may contribute to the
machine symptom. Perform these tests/checks in the order
listed. In general, these tests can be conducted without
removing the case cover.
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.
WARNING
Step 3. PERFORM COMPONENT TESTS. The last column,
labeled "Recommended Course of Action" lists the most
likely components 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 your problem.
All of the referenced test procedures referred to in the
Troubleshooting Guide are described in detail at the end of
this section. Refer to the Troubleshooting and Repair Table
of Contents to locate each specific Test Procedure. All of the
referred to test points, components, terminal strips, etc., can
be found on the referenced electrical wiring diagrams and
schematics. Refer to the Electrical Diagrams Section Table of
Contents to locate the appropriate diagram.
CAUTION
F-2
TROUBLESHOOTING AND REPAIR