How to Remove and Install the Fans on Dell Networking N4000

NOTE: Environmental factors can decrease the amount of time required between fan replacements. Check the environmental factors regularly. An increase in temperature and/or particulate matter in the air might affect performance (for example, new equipment installation).
CAUTION: Check the fans at six-month intervals and replace them as necessary. To accurately determine replacement intervals, monitor the speeds of the cooling fans regularly.
NOTE: If a fan tray fails, you must completely replace it. There are no field serviceable components in the fan tray unit. To request a replacement, see Dell Networking Support.
1. Loosen the securing screws on the sides of the failed fan tray.
2. Use the grab handle to slide the fan tray out of the bay.
3. Use the grab handle on the replacement fan tray to slide it into the bay.
4. Tighten the captive screws on the replacement fan tray with a screwdriver. Ensure that the fan tray is secure.