Installing a hot-swap fanThe server comes with three replaceable double fans. For proper cooling, theserver requires that all three fans be installed at all times.Attention: To ensure proper server operation, if a fan fails, replace it within 30seconds. Have a replacement fan ready to install as soon as you remove the failedfan.Vertical tabsFan 3Fan 2 Fan 1To install any of the three replaceable fans, complete the following steps:1. Read the safety information that begins on page vii and “Installation guidelines”on page 37.2. If you have not done so already, slide the server out of the rack and remove thecover (see “Removing the cover” on page 44).Attention: To ensure proper system cooling, do not remove the top cover formore than 30 minutes during this procedure.3. Orient the new fan over its position in the fan bracket so that the connector onthe bottom aligns with the fan connector on the system board.4. Align the vertical tabs on the fan with the slots on the fan cage bracket.5. Push the new fan into the fan connector on the system board. Press down onthe top surface of the fan to seat the fan fully. Make sure that the amber LEDnext to the fan connector on the system board is off.If you have other devices to install or remove, do so now. Otherwise, go to“Completing the installation” on page 139.116 System x3650 M3 Types 4255, 7945, and 7949: Installation and User’s Guide
