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Table 15: Airflow Direction in AC Power Supply Models for OCX1100-48SX Switches
Model
OCX-460W-X-AC-AFO
OCX-460W-X-AC-AFI
Related
Documentation
DC Power Supply in OCX1100 Switches
Copyright © 2017, Juniper Networks, Inc.
AC Power Supply Airflow
Each power supply has its own fan and is cooled by its own internal cooling system.
Each power supply has the label
power supply that indicates the direction of airflow in the power supply.
Table 15 on page 25
lists the AC power supply models and the direction of airflow in them.
Label on Power Supply
Direction of Airflow
Front-to-back—that is, air intake to cool the chassis is through the vents
AIR OUT (AFO)
on the front panel of the chassis and hot air exhausts through the vents
on the rear panel of the chassis.
AIR IN (AFI)
Back-to-front—that is, air intake to cool the chassis is through the vents
on the rear panel of the chassis and hot air exhausts through the vents
on the front panel of the chassis.
Power Supply LEDs in OCX1100 Switches on page 27
AC Power Supply Specifications for OCX1100 Switches on page 41
Installing an AC Power Supply in an OCX1100 Switch on page 77
The DC power supply in OCX1100 switches is a hot-insertable and hot-removable
field-replaceable unit (FRU): You can install it without powering off the switch or
disrupting switch functions.
All OCX1100-48SX switches that are powered by DC power supplies are shipped with
two DC power supplies preinstalled in the rear panel of the switches.
This topic describes the DC power supplies.
CAUTION:
Do not install:
AC and DC power supplies in the same chassis.
AC power supplies in DC switch models or DC power supplies in AC switch
models.
Power supplies with different airflow labels (
) in the same chassis.
(AFO)
Power supplies and fan modules with different airflow labels (
and
AIR OUT (AFO)
or
AIR OUT (AFO)
AIR IN (AFI)
) in the same chassis.
Chapter 4: Power Supplies
on the faceplate of the
and
AIR IN (AFI)
AIR OUT
AIR IN (AFI)
25
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