Installing a Fan Tray in an EX4500 Switch
An EX4500 switch has a single fan tray. The fan tray is a hot-insertable and hot-removable field-replaceable unit (FRU); you can remove and replace the fan tray while the switch is running without turning off power to the switch or disrupting switching functions.
The fan tray installs horizontally on the rear of the chassis. Handles on each side of the front faceplate facilitate handling of the fan tray.
Before you begin to install a fan tray:
- Ensure you understand how to prevent ESD damage. See Prevention of Electrostatic Discharge Damage on EX Series Switches.
Ensure that you have the following parts and tools available to install a fan tray in the switch:
- Electrostatic discharge (ESD) grounding strap
 | Caution: The fan tray can be removed and replaced while the switch is operating. However, the fan tray must be replaced within 30 seconds of removing the fan tray to prevent the chassis from overheating. |
To install a fan tray in an EX4500 switch (see Figure 1):
- Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
- Hold the handles of the fan tray and align the
tray with the fan tray guides on the fan tray slot.
Note: Ensure that the power supply labels, 1 and 0, are on the left side corners of the fan tray.
- Slide in the fan tray until it is fully seated in the chassis.
Figure 1: Installing a Fan Tray in an EX4500 Switch
