Removing a Bottom Fan Tray and Front Panel Display from a QFX3008-I Interconnect Device

A QFX3008-I Interconnect device bottom fan tray and front panel display is field-replaceable and is hot-removable and hot-insertable; you can remove and replace the fan tray while the device is running without turning off power to the device or disrupting device functions. The rest of this topic uses bottom fan tray to mean bottom fan tray and front panel display.

Caution: Do not remove a fan tray unless you have a replacement fan tray available.

The bottom fan tray installs horizontally as part of the panel display located directly below the front card cage. A handle on the panel display faceplate facilitates handling of the fan tray. There is a captive screw at the top of the panel display to secure the fan tray in the chassis.

Before you remove a bottom fan tray, ensure that you understand how to prevent ESD damage. See Prevention of Electrostatic Discharge Damage.

Ensure that you have the following parts and tools available to remove a fan tray from a QFX3008-I Interconnect device:

• Electrostatic discharge (ESD) grounding strap
• Replacement fan tray
• Phillips (+) screwdriver, number 2

Caution: The fan trays can be removed and replaced while the QFX3008-I Interconnect device is operating. However, you must replace the fan tray within 2 minutes of removing the fan tray to prevent overheating of the chassis.

To remove a bottom fan tray from a QFX3008-I Interconnect device (see Figure 1):

1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
2. Unscrew the captive screw counterclockwise using your fingers. If you cannot easily unscrew the captive screw with your fingers, use the screwdriver.
3. Grasp the handle on the right side of the panel display and gently pull the fan tray toward you about 5 in. (13 cm) out of the chassis.

   Warning: There is no fan guard on the fans. Be careful to keep your fingers clear of the moving fan blades when you are removing the fan tray. To avoid injury, do not touch the fans with your hands or any tools as you slide the fan tray out of the chassis—the fans might still be spinning.

4. Wait for approximately 15 seconds to allow all the fans to stop spinning.
5. Slide the fan tray completely out of the chassis.

Figure 1: Removing a Bottom Front Fan Tray from a QFX3008-I Interconnect Device