Cisco WS-C2950-24 Hardware Installation Guide - Page 197
Replacing a Fan Tray or Air Filter, Before Hot-Swapping a Fan Tray, Replacing the Cisco 2911 Fan Tray
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Chapter 5 Installing and Upgrading Internal Modules and FRUs Replacing a Fan Tray or Air Filter Replacing a Fan Tray or Air Filter The Cisco 2900 series and 3900 series routers have hot-swappable fan trays and air filters that are field replaceable units (FRUs). The fan tray includes all of the router fans in one assembly. If a fan fails, replace the tray using a flat-blade or Phillips screwdriver. Note We recommended replacing fan filters every six months, or when dirty, whichever comes first. Before Hot-Swapping a Fan Tray Before hot-swapping a fan tray, read the safety precautions below. • Read the entire procedure and have the required tools available. • Do not attempt the hot-swap in ambient air temperature above 90°F (32°C). • Do not attempt the hot-swap at an altitude above 6000 feet (1829 meters). • When the router is being operated, it is recommended to change the fans within the following times to ensure the router does not overheat: - Cisco 2911 within 2 minutes - Cisco 2921 or 2951 within 2 minutes - Cisco 3900 series within 1.5 minutes Cisco 2911 • Replacing the Cisco 2911 Fan Tray section, page 5-45 • Replacing the Cisco 2911 Air Filter section, page 5-46 Cisco 2921 and Cisco 2951 • Replacing the Cisco 2921 or 2951 Fan Tray section, page 5-47 Cisco 2900 and Cisco 3900 Series • Replacing the Cisco 3900 Series Fan Tray section, page 5-48 • Replacing the Cisco 3900 Series Air Filter section, page 5-49 Replacing the Cisco 2911 Fan Tray To hot-swap a fan tray, complete the following steps: Note If hot-swapping the fan tray, it is recommended to complete the operation within 2 minutes to ensure the router remains within operating temperature. Step 1 Step 2 Read the "Safety Warnings" section on page 5-2 section and disconnect the power supply before you perform any module replacement. Unsnap the bezel by pulling it straight out from the chassis. See Figure 5-33. OL-18712-03 Cisco 2900 Series and 3900 Series Hardware Installation Guide 5-45