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F-52

F-52

 

 

TROUBLESHOOTING & REPAIR

POWER CAPACITOR REMOVAL AND REPLACEMENT (CONTINUED)

FIGURE F.13 – POWER CAPACITOR MOUNTING DETAILS

CLAMP

BRACKET

ANALOG CONTROL

SCREWS (2)

 

 

SUPPLY PC BOARD

 

 

 

 

(4 SCREWS)

 

 

 

 

 

 

CHOPPER

 

 

 

PC BOARD

 

 

+

CAPACITOR

 

 

POSITIVE

 

 

-

STRAP

 

 

 

CAPACITOR

 

 

 

NEGATIVE

 

 

 

STRAP

 

 

 

LEADS

 

 

RIGHT

#X4A

#X4

LEFT

 

#X1

 

SIDE

#X1A

#401

SIDE

 

 

 

#401A

 

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PROCEDURE

Refer to Figure F.13.

1.Set the CC/CV power switch to OFF.

2.Remove input power to the machine.

WARNING

ELECTRIC SHOCK can kill.

Disconnect input power before removing the case cover and performing tests or making repairs to the machine.

3.Perform the Case Cover Assembly Removal procedure.

4.Perform the Power Capacitor Discharge procedure.

5.Disconnect the two plug harness connec- tions at the top of the tunnel assembly.

6.Disconnect the plug harness connection above each Chopper PC board.

MULTI-WELD 350

Page 92
Image 92
Lincoln Electric SVM151-A service manual Figure F.13 Power Capacitor Mounting Details