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FLEXTEC™ 500
MAINTENANCE
ELECTRIC SHOCK can kill.
• Before carrying out service, maintenance and/or
repair jobs, fully disconnect power to the machine.
• Do not touch electrically hot parts.
Only Qualified personnel should perform this
maintenance.
VISUAL INSPECTION
Clean interior of machine with a low pressure air stream. Make a
thorough inspection of all components.
Look for signs of overheating, broken leads or other obvious
problems. Many problems can be uncovered with a good visual
inspection.
ROUTINE MAINTENANCE
Every six months the machine should be cleaned with a low pressure
air stream. Keeping the machine clean will result in cooler operation
and higher reliability. Be sure to clean the following areas:
• All printed circuit boards
• Power switch
• Main transformer
• Input rectifier
• Heatsink fins
• Auxiliary Transformer
• Reconnect Switch Area
• Fan (Blow air through the rear louvers)
Examine the sheet metal case for dents or breakage. Repair the case
as required. Keep the case in good condition to ensure that high
voltage parts are protected and correct spacing is maintained
throughout. All external sheet metal screws must be in place to
ensure case strength and electrical ground continuity.
If for any reason you do not understand the procedures or are unable to perform the maintenance or repairs safely, contact your
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
WARNING
PERIODIC MAINTENANCE
Thermal Protection
Thermostats protect the machine from excessive operating
temperatures. Excessive temperatures may be caused by a lack of
cooling air or operating the machine beyond the duty cycle and output
rating. If excessive operating temperature should occur, the
thermostat will disable the output and run the cooling fan. The
displays will remain energized during this time and the thermal light
will be illuminated. Thermostats are self-resetting once the machine
cools sufficiently. If the thermostat shutdown was caused by
excessive output or duty cycle and the fan is operating normally, the
Power Switch may be left on and the reset should occur within a 15
minute period.
E-1
MAINTENANCE
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