Lincoln Electric V250-S service manual Capacitor Balance Test

TOC

TOC

F-40 TROUBLESHOOTING & REPAIR F-40

CAPACITOR BALANCE TEST (continued)

Return to Section

Return to Section TOC

Return to Master

Return to Master TOC

TEST PROCEDURE

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

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

3.Put the mode switch S2 in the SMAW (soft) position and put the Local/Remote switch S3 in the LOCAL position.

4.Put the Output Control R3 at the minimum position.

5.Locate and familiarize yourself with the capacitor test locations on the power board. See Figure F.12.

6.The following tests will be performed with the input power applied to the V250-S. BE CAREFUL. ALWAYS

REMOVE THE INPUT POWER AND PERFORM FILTER CAPACITOR DISCHARGE PROCEDURE BEFORE TOUCHING ANY MACHINE COMPONENT.

7.Apply the correct input power† and turn ON the V250-S.

†Note: This test should only be conducted with the V250-S reconnect switch and “A” jumper configured for 380VAC and above.

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

CAPACITOR (C2) TERMINALS

201
204	207A	+
		202A
G2684
POWERV250S		DANGER

HIGH VOLTAGE CAN KILL

209

208	203A	+
		206
205

CAPACITOR (C1) TERMINALS

Figure F.12 Power Board and Capacitor Test Locations

INVERTEC V250-S