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SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK can kill.
• Have an electrician install and ser- vice this equipment.
•Turn the input power off at the fuse box, disconnect supply lines and allow machine to sit for five minutes minimum to allow the power capaci- tors to discharge before working inside this equipment.
•Do not touch electrically hot parts.
INPUT FILTER CAPACITOR
DISCHARGE PROCEDURE
WARNING
The machine has internal capacitors which are charged to a high voltage during
ROUTINE MAINTENANCE
1.Perform the following preventive maintenance procedures at least once every thousand hours of use. It is good practice to keep a preventive main- tenance record; a record tag attached to the machine works best.
2.Remove the machine cover (requires a 3 mm hex key) after allowing the minimum 5 minute power off requirement to let the input capacitors dis- charge.
WARNING
Failure to observe this discharge time requirement could result in severe electrical shock hazard.
3.Keeping the machine clean will result in cooler operation and higher reliability. Be sure to clean the following areas with a low pressure air stream.
•Printed circuit boards
•Power switch
•Fan blades
•Louvers
•Heat sink fins
•Output terminals
4.Examine capacitors for leakage or oozing. If any leakage is noticed, take the unit to an authorized Lincoln Field Service Shop.
5.Examine the case for breakage. Repair or replace the case as required. Keep the case in good condition to ensure that high voltage parts are protected and correct spacings are main- tained.
6.Install machine covers and fasteners.
REPLACEMENT OF INTERNAL FUSE
The Invertec has additional protection provided to some circuits through an internal fuse. For replace- ment of that fuse proceed as follows:
1.Turn off the power to the unit and remove the input plug.
2.Allow the machine to stand for 5 minutes to let the input capacitors discharge.
3.Remove the machine cover.
4.Replace the blown fuse with a new 0.5A 500V slowblow fuse.
NOTE: If the fuse blows again after power is restored, the cause could be an internal breakdown in the power unit. In this case, take the unit to an authorized Lincoln Field Service Shop.
INVERTEC