Digital Acoustics ESBx-110 Especificações descarregar pdf (Página 332)

100

101

Maintenance and Troubleshooting

ADDvantage-32 PLUS ● AC to DC Power Converter

7-34

NOTE

Each pair of wires is labeled with a single letter corresponding to a

letter silkscreened on the base.

5. Refer to Figure 7-9 and Table 7-5. Determine hardware size used to

mount bus bar assembly to the thyristors/ diode. Using the torque wrench

and the appropriate socket, remove the hardware as shown in Figure 7-9.

6. Remove bus bars from the thyristor.

7. Using the 5/32" Allen wrench socket, remove the mounting screws on

each end of the thyristor or diode.

8. Remove the damaged thyristor or diode.

7.8.1.2 Replacement and Reassembly

1. Apply a layer of thermally conductive compound to bottom of new

thyristor or diode and reinstall in base assembly.

2. Mount new thyristor or diode to heatsink using mounting screws located

on each end. Torque tighten the mounting screws to 38-50 in-lb.

Recheck torque after a minimum of 3 hours.

3. Replace the bus bars on the thyristor.

4. Replace the hardware mounting the bus bars to thyristor. Torque tighten

the screws per the following table.

TABLE 7-6. TORQUE SPECIFICATION

DRIVE SIZE

TORQUE

SPECIFICATION

HARDWARE TYPE

FIELD THYRISTOR AND DIODE 22-30 in-lb. #2 Phillips screw

DC0010, DC0030, DC0056 22-30 in-lb. #2 Phillips screw

DC0110, DC0180 38-50 in-lb. #3 Phillips screw

DC0280, DC0360, DC0510 68-75 in-lb. 1/2" hex head bolt

1 2 ... 327 328 329 330 331 332 333 334 335 336 337 ... 465 466

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