Multi-Phase Chopper Board Location - Lincoln Electric POWER WAVE S500 Service Manual

F-58
MULTI-PHASE CHOPPER BOARD TEST (continued)
FIGURE F.22 – MULTI-PHASE CHOPPER BOARD 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 Multi-Phase Chopper Board located
on the lower right side of the machine. See
Figure F.22.
TROUBLESHOOTING AND REPAIR
can kill.
POWER WAVE
4. Perform the Multi-Phase Chopper Board diode
checks per Table F.19 and Figure F.23.
5. Locate the Green LED on the Multi-Phase
Chopper Board. See Figure F.23. See Wiring
Diagram.
6. Carefully apply the correct three phase input
power to the Power Wave
7. If the Green LED is lit, the Multi-Phase Chopper
Board is receiving input power from the Power
Conversion Assembly (100VDC). See Figure
F.23.
8. If the Green LED is not lit, the Multi-Phase
®
Chopper Board may not be receiving the
100VDC from the Power Conversion Board.
See the Wiring Diagram.
® S500
MULTI-PHASE
CHOPPER BOARD
S500 machine.
®
F-58