Removing a Side Fan Tray from a QFX3008-I Interconnect Device

A QFX3008-I Interconnect device has eight field-replaceable side fan trays. All eight side fan trays are hot-removable and hot-insertable field-replaceable units (FRUs); you can remove and replace the fan tray while the device is running without turning off power to the device or disrupting device functions.

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

Four fan trays install vertically on the left front of the chassis and four on the right front of the chassis. Handles and captive screws on the two cover panels on each side of the chassis facilitate handling and securing of the fan trays in the chassis.

Before you remove a 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 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, located at the top of each cover panel, counterclockwise using your fingers. If you cannot easily unscrew the captive screw with your fingers, use the screwdriver.
3. Hold the screw on the cover panel with one hand while holding the handle with the other. Pull firmly on the screw to detach the cover panel.
4. Pull on the small handle to slide the fan tray out 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.

   Caution: Do not attempt to pull the fan tray out by the air filter tab, located in the center of the module. You can damage the air filter.

5. Wait for approximately 15 seconds to allow all the fans to stop spinning.
6. Slide the fan tray completely out of the chassis, being careful to use your other hand to support the weight.

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