Figure 122: Fan Tray Used In An Ex4200 Switch - Juniper QFabric QFX3000-G Hardware Documentation

Cooling System and Airflow in an EX4200 Switch
Fan Tray
Airflow Direction in the EX4200 Switch Chassis
Copyright © 2018, Juniper Networks, Inc.
Installing and Removing EX4200 Switch Hardware Components
The cooling system in an EX4200 switch consists of a field-replaceable unit (FRU) fan
tray with three fans (see Figure 122 on page
the EX4200-24F-S and EX4200-48T-S switches are shipped with one fan tray
pre-installed in the rear panel of the switches. EX4200-24F-S and EX4200-48T-S
switches are not shipped with pre-installed fan tray; you must order them separately.
Fan Tray on page 187
Airflow Direction in the EX4200 Switch Chassis on page 187
The fan tray is located at the rear of the chassis.

Figure 122: Fan Tray Used in an EX4200 Switch

The fan tray located at the rear of the chassis provides side-to-rear chassis cooling (see
Figure 123 on page 188).
Chapter 8: EX4200 Overview
187). All the EX4200 switch models, except
187