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F-12

TROUBLESHOOTING & REPAIR

F-12

 

 

AUXILIARY TRANSFORMER TEST (continued)

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TEST PROCEDURE

1.Remove main input power to the V250-S.

2.Perform Filter Capacitor Discharge Procedure detailed in Maintenance Section

3.Locate the Auxiliary Transformer just behind the input line switch on the lower right side of the machine.

4.Locate and disconnect plug J7 from the wiring harness.

5.Carefully apply the 230VAC isolated supply to leads H1(1J7) and H3(2J7) of the auxiliary transformer.

6.Carefully check for the presence of the following voltages at the appro- priate leads. See Table F.1.

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AUXILIARY TRANSFOMER

PLUG J7

1J7 2J7 3J7

4J7 5J7 6J7

Figure F.1 Auxiliary Transformer and Plug J7.

INVERTEC V250-S

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Image 44
Lincoln Electric V250-S service manual Auxiliary Transformer Test, Test Procedure