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POWER WAVE
®
R500
Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel. Unauthorized repairs per-
formed 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 through-
out 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.
Step 2. POSSIBLE CAUSE.
The second column labeled "POSSIBLE CAUSE" lists the obvious
external possibilities that may contribute to the machine symp-
tom.
Step 3. RECOMMENDED COURSE OF ACTION
ELECTRIC SHOCK can kill.
• Turn the input power OFF at the welding power source before installation or changing
drive rolls and/or guides.
• Do not touch electrically live parts.
• When inching with the gun trigger, electrode and drive mechanism are "hot" to work and
ground and could remain energized several seconds after the gun trigger is released.
• Welding power source must be connected to system ground per the National Electrical Code or any
applicable local codes.
• Only qualified personnel should perform maintenance work.
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Observe all additional 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.
HOW TO USE TROUBLESHOOTING GUIDE
WARNING
This column provides a course of action for the Possible Cause,
generally it states to contact your local Lincoln Authorized Field
Service Facility.
If you do not understand or are unable to perform the
Recommended Course of Action safely, contact your local
Lincoln Authorized Field Service Facility.
WARNING
CAUTION
E-1
TROUBLESHOOTING
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