Service manual

7.6.3 Power Card

1. Remove the 4 screws (T10) for the DC coil cables.

2. Remove the 5 screws (T10) for the heatsink.

3. Remove the 4 IGBT screws (T25).

4. Unplug fan cable connector.

CAUTION

The power card and the heatsink have thermal paste on

them. Wear protective gloves as the paste is poisonous.

5. Lift out the power card.

6. Remove the capacitor bank gasket.

Reinstall in the reverse order.

130BC104.11

Illustration 7.28 Power Card

1 Power card

Table 7.28

7.6.4

Heatsink and DC Coils

1. Remove the 7 mounting screws from top surface.

2. Press and loosen the 3 barbs at the bottom.

3. Unplug the DC coil cables.

4. Remove the heatsink.

5. Lift out the DC coils.

Reinstall in the reverse order.

130BC105.11

Illustration 7.29 Heatsink

1 Heatsink

Table 7.29

130BC106.11

Illustration 7.30 DC Coil

1 DC coil

Table 7.30

H-Frame Size Disassembly a...

VLT

HVAC Basic Drive Service Manual

74 MG90X202 - VLT

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