1. Turn off the AC and DC power, and wait until the LED indicators turns off.
2. Follow Section 5.1.1 to open the door.
3. Disconnect the cable on the DC SPD board.
4. Loosen the screws and remove the fan cabinet.
5. Loosen the screws to lift the entire fan assembly.
6. Clean assembly or replace with a unit.
7. Install the internal fan with procedures above in reverse order and tighten the
screws with recommended torque in Figure 5-10.
8. Follow Section 5.1.2 to close the door.
5.3 Replacement of Internal Fan
Figure 5-9: Location of internal fans and fan connectors
DC SPDFAN 1
FAN 2
55
Maintenance
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