Installing a Fan Tray in an EX8216 Switch

An EX8216 switch has two fan trays. Both fan trays are hot-insertable and hot-removable field-replaceable units (FRUs); you can remove and replace them while the switch is running without turning off power to the switch or disrupting switching functions. Each fan tray contains nine fans.

Both fan trays install vertically on the left front of the chassis. Handles on the front faceplate of each fan tray facilitate handling of the fan trays. There is a spring-loaded latch on the base of each fan tray that is used to latch the fan tray into the chassis.

Before you begin to install a fan tray:

• Ensure you understand how to prevent ESD damage. See Prevention of Electrostatic Discharge Damage.

Ensure that you have the following parts and tools available to install a fan tray in an EX8216 switch:

• Electrostatic discharge (ESD) grounding strap

Caution: The fan trays can be removed and replaced while the switch is operating. However, each fan tray must be replaced within 2 minutes of removing it to prevent the chassis from overheating.

To install a fan tray in an EX8216 switch (see Figure 1):

1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
2. Hold the handle of the fan tray with one hand and support the weight of the tray with the other hand. Align the tray with the fan tray guides on the fan tray slot. Slide in the fan tray until it is fully seated in the chassis.

   You will hear a distinct click sound when the spring-loaded latch locks into the corresponding hole on the strike plate below the fan tray. The latch must be fully engaged in the corresponding hole for the fan tray to be securely installed.

Figure 1: Installing a Fan Tray in an EX8216 Switch

Note: Both fan trays must be installed in the chassis for normal switch operation.