Hot-Swap Chassis Fan Units

There are five hot-swap chassis fan units in the HP Server. Fan units 1, 2, 3 and 4 are accessible from the front of the chassis. Fan unit 5 is accessible from the rear of the chassis. Fan units 1, 2, 3 and 4 are identical and interchangeable.

If a fan failure is total (both rotors), or if the fan has been removed from the chassis for more than 30 seconds, a system will log the event as a critical error. A critical error will cause the System LED to flash red and will require a reboot to reset the error status. A total fan failure (including removal) for more than 2 minutes will result in system shutdown. If you are hot-swapping a fan assembly in response to an error message, and the system is operating normally, hot-swapping the fan in less than 30 seconds will eliminate the requirement for a system reboot. Hot-swapping a fan in less than 2 minutes will allow continued operation and prevent automatic shutdown.




	CAUTION: Operating the server with the front grill removed will risk EMI. Operate the server with the front grill removed only when hot-swapping a fan. Always replace the front grill immediately after replacing the fan. Observe all ESD safety precautions while performing this procedure. Failure to follow ESD safety precautions could result in damage to the server.




	NOTE: A hot-swap device does not require interaction with the operating system before the device is removed from or installed into the server. The power to the server does not have to be off to remove or replace a hot-swap chassis fan unit.

Removing and Replacing a Front Panel Hot-Swap Fan

Figure 3-9 Removing a Front Panel Hot-Swap Fan

The server does not need to be removed or extended from the rack to allow fan replacement. To remove and replace a hot-swap fan from the front of the server chassis, perform the following steps:

Remove the front grill. Refer to “Removing the Front Grill”.

Using an ACX-15 torx screwdriver, loosen the two captive screws on the plastic fan extractor handle (left side of fan).




	CAUTION: Hot-swapping a fan can interrupt system operation. If you are hot-swapping a fan assembly in response to an error message, and the system is operating normally, hot-swapping the fan in less than 30 seconds will eliminate the requirement for a system reboot. Hot-swapping the fan in less than 2 minutes will allow continued operation and prevent automatic shutdown.

Using the extractor handle, pull the fan from the server chassis.
Orient the replacement fan such that the extractor handle is at the left. Insert the fan into the chassis opening and press firmly into place.
Tighten the two captive screws that secure the fan in place.

Removing and Replacing a Rear Panel Hot-Swap Fan

Figure 3-10 Removing a Rear Panel Hot-Swap Fan

To remove and replace the hot-swap fan from the rear of the server chassis, perform the following steps:




	NOTE: The server does not need to be removed from the rack to allow fan replacement.

If rack-mounted, it may be necessary to extend a slide-mounted server out from the rack for better access. If needed, slide the server out to the fully extended position.

Using an ACX-15 torx screwdriver, loosen the two captive screws that secure the fan unit to the server chassis.




	CAUTION: Hot-swapping a fan can interrupt system operation. If you are hot-swapping a fan assembly and the system is operating normally, hot-swapping the fan in less than 30 seconds will eliminate the requirement for a system reboot. Hot-swapping the fan in less than 2 minutes will allow continued operation and prevent automatic shutdown.

Pull the fan assembly from the server chassis by pulling the curved handle.
Orient the replacement fan assembly such that the curved handle is at the bottom. Gently push the fan unit into position.
Tighten the two captive screws that secure the fan unit to the server chassis.

Hot-Swap Chassis Fan Units

Technical documentation

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Removing and Replacing a Front Panel Hot-Swap Fan

Removing and Replacing a Rear Panel Hot-Swap Fan