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F-58

TROUBLESHOOTING & REPAIR

F-58

 

 

OUTPUT DIODE ASSEMBLY REMOVAL AND REPLACEMENT

(MACHINE CODES BELOW 10150)

(continued)

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PROCEDURE

1.Remove input power to the V250-S.

2.Perform Filter Capacitor Discharge Procedure detailed in Maintenance Section.

3.Locate output diode assembly and associated leads. See Figure F.17.

4.Cut the necessary wire ties and slide the sleeving from the four wire con- nections to be disassembled. See Figure F.17

5.Label the leads for identification pur- poses for reassembly.

6.Using the 7/16” wrench remove the bolts, nuts and washers from two of the splices.

7.Using the 3/8” wrench and slot head screwdriver disassemble the other two splices.

8.Using the 7/16” wrench remove the bolt and washers connecting the out- put cable to the diode heat sink. Be sure to take note of the small resistor connection at the same point. See Figure F.17.

9.With the 5/16” nut-driver remove the two screws from the top rear case back. See Figure F.15.

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SNUBBER RESISTORS

7/16 BOLT

SLEEVED SPLICES

Figure F.17 Output Diode Assembly and Leads

INVERTEC V250-S

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Lincoln Electric V250-S service manual Snubber Resistors