Cooling System And Airflow; Qfx5200 Cooling System And Airflow; Fan Modules - Juniper QFX5200 Hardware Manual

CHAPTER 3

Cooling System and Airflow

QFX5200 Cooling System and Airflow

Fan Modules

Copyright © 2017, Juniper Networks, Inc.
QFX5200 Cooling System and Airflow on page 17
QFX5200 Fan Module LED on page 20
The cooling system in an QFX5200 device consists of five fan modules and a single fan
in each power supply. The switch can be set up to work in one of two airflow directions:
Airflow In–Air comes into the switch through the vents in the field-replaceable units
(FRUs)
Airflow Out–Air comes into the switch through the vents in the port panel.
CAUTION: Airflow In and Airflow Out fans and power supplies cannot be
mixed in the same chassis.
This topic describes:
Fan Modules on page 17
Do Not Install Components with Different Airflow or Wattage in the Switch on page 19
The fan modules in QFX5200 devices are hot-insertable and hot-removable
field-replaceable units (FRUs). These fan modules are designed for one of the two
available airflow directions (Airflow In or Airflow Out). The fan modules are also
color-coded for the airflow direction as well. The fan modules are installed in the fan
module slots between the management panel and the power supplies.
The QFX5200 fan modules have five fan modules numbered 0 through 4 from counting
from left to right. Each fan module slot has a fan icon next to it.
Figure 7 on page 18 shows the fan module.
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