Juniper Networks EX4200 manual Cooling System and Airflow in an EX3200 Switch

Chapter 2: Component Descriptions

Cooling System and Airflow in an EX3200 Switch

The cooling system in an EX3200 switch consists of a field-replaceable unit (FRU) fan tray with one fan (see Figure 20 on page 31). The fan tray is located at the rear of the chassis and provides side-to-rear chassis cooling (see Figure 21 on page 31).

Figure 20: Fan Tray Used in an EX3200 Switch

Figure 21: Airflow Through the EX3200 Switch Chassis

Temperature sensors in the chassis monitor the temperature within the chassis. The system raises an alarm if the fan fails or if the temperature inside the chassis rises above permitted levels. If the temperature inside the chassis rises above the threshold, the system shuts down automatically and the temperature shutdown LED on the

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