Power Conversion Assembly Location - Lincoln Electric POWER WAVE S500 Service Manual

F-32
POWER CONVERSION ASSEMBLY TEST (continued)
FIGURE F.10 – POWER CONVERSION ASSEMBLY LOCATION
PROCEDURE
WARNING
ELECTRIC SHOCK
• Do not touch electrically live
parts or electrodes with your
skin or wet clothing.
• Insulate yourself from the work and ground.
• Always wear dry insulating gloves.
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1. Remove the input power to the Power Wave
S500 machine.
2. Perform the Case Cover Removal and
Capacitor Discharge Procedure.
3. Locate the Power Conversion Assembly locat-
ed on the left side of the machine. See Figure
F.10.
4. Perform the Power Conversion diode tests per
Table F.11 and Figure F.11. When diode test
is complete make sure all internal leads are
connected before applying input power to
the machine.
TROUBLESHOOTING AND REPAIR
POWER CONVERSION
ASSEMBLY
can kill.
POWER WAVE
5. Locate the five Green LEDs on the Power
Conversion Assembly. See Figure F.12.
6. Carefully apply the correct three phase input
power to the Power Wave
7. Check the Buck/Boost Circuits using the LED
Table F.12. See Figure F.12.
8. Perform the voltage checks. See Table F.13
and Figure F.12.
9. Remove the input power to the Power Wave
S500 machine.
®
10. If any of the above test results are not correct
the Power Conversion Assembly may be faulty.
11. If faulty, perform the Power Conversion
Board Assembly Removal and Replacement
Procedure.
12. Perform the Case Cover Replacement
Procedure.
13. Perform the Retest After Repair Procedure.
® S500
F-32
S500 machine.
®
®