This topic describes:
•
•
Airfow Direction in EX4500 Switch Models on page 33
•
Front-to-Back Airflow on page 34
•
Back-to-Front Airflow on page 34
Fan Tray
The fan tray is a hot-insertable and hot-removable field-replaceable unit (FRU). The fan
tray contains five fans (see
).
Figure 18: Fan Tray Used in an EX4500 Switch
g020812
Fan tray handles
The fan tray installs horizontally in the rear of the chassis. The fan tray has two handles,
one on each side that facilitate handling of the fan tray.
You remove and replace the fan tray from the rear of the chassis. The switch continues
to operate for a limited time (30 seconds) during the replacement of the fan tray without
thermal shutdown.
The fan tray provides front-to-back or back-to-front airflow depending on the switch
model you purchase.
NOTE:
The side of the switch where the network ports are located is the front
of the switch.
Airfow Direction in EX4500 Switch Models
shows the different EX4500 switch models and their direction of
airflow.
Table 14: Airflow Direction in EX4500 Switch Models
Direction of Airflow
Model
Front-to-back
EX4500-40F-FB
Back-to-front
EX4500-40F-BF
Front-to-back
EX4500-40F-FB- C
33
Copyright © 2015, Juniper Networks, Inc.
Chapter 2: Component Descriptions
Содержание EX4500-40F-BF
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Страница 225: ...PART 7 Returning Hardware Returning the Switch or Switch Components on page 209 207 Copyright 2015 Juniper Networks Inc ...
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Страница 285: ...PART 9 Compliance Information Compliance Information on page 269 267 Copyright 2015 Juniper Networks Inc ...
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