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F-68

F-68

TROUBLESHOOTING & REPAIR

CAPACITOR REMOVAL AND REPLACEMENT PROCEDURE (continued)

FIGURE F.33 – STT PLACED ON ITS RIGHT SIDE

MOUNTING

BOLTS (5)

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7.Carefully lift and tilt the Invertec STT machine onto its right side. See Figure F.33.

8.Using the 7/16" wrench, remove the five bolts holding the lower tray assembly to the case bottom.

9.Carefully slide out and support the lower tray assembly.

10.Using the needle nose pliers, remove the strain relief holding the J22 lead harness to the case bottom.

11.Using the 1/2" wrench, remove the IGBT cable from the negative output terminal.

12.Carefully remove the lower tray assembly clear from the machine and set aside.

13.Carefully disconnect the leads at the top of the switch board.

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INVERTEC STT

Page 106
Image 106
Lincoln Electric SVM129-B service manual Figure F.33 STT Placed on ITS Right Side