Dell PowerConnect B-8000 Reference Manual - Page 41

RRP: Fan assembly 4 CAUTION Disassembling any part of the fan assembly voids the part warranty and regulatory certifications. There are no user-serviceable parts inside the fan assembly. Because the cooling system relies on pressurized air, do not leave any of the fan assembly slots empty longer than two minutes while the switch is operating. If a fan assembly fails, leave it in the switch until it can be replaced. Maintain all three fan assemblies in operational condition to provide redundancy. Table 5 describes the fan status LED colors, behaviors, and actions required, if any. TABLE 5 Fan status LED behavior, description, and required actions. LED Color and behavior Description Action Required No light Fan assembly is not receiving power. Steady green Fan assembly is operating normally. Steady amber (for more than 5 seconds) Fan fault for one of the following reasons: • One or more of the fans in the fan assembly has failed. • The fan FRU was disabled by the user. Verify that the fan FRU is seated correctly. No action required. Verify that the fan FRU is enabled. If the fan FRU is enabled and the FRU is faulty, it should be replaced. Determining the need to replace a fan assembly Use one of the following methods: • Check the fan status LED on the face of the fan assembly (see "LED locations" on page 16). • In Web Tools, click the Fan Status icon. • Enter the fanShow command at the prompt: br5300:admin> fanshow Fan 1 is Ok, speed is 4821 RPM Fan 2 is Ok, speed is 4821 RPM Fan 3 is Ok, speed is 4891 RPM br5300:admin> Time required Replacing a fan assembly in the PowerConnect B-8000 should require less than two minutes to complete. Items required The following items are required to replace a fan assembly in the PowerConnect B-8000: • New fan assembly • Phillips-head screwdriver #1 PowerConnect B-8000 Hardware Reference Manual 29 53-1001788-01