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Table 13: Airflow Direction in OCX1100-48SX Switch Models (continued)
Model Number
OCX1100-48SX-D-AFO
OCX1100-48SX-AFI
OCX1100-48SX-D-AFI
Front-to-Back Airflow
Copyright © 2017, Juniper Networks, Inc.
Fan Modules and Power Supply
The switch ships with four fan modules and
two DC power supplies installed; all bearing
the label
.
AIR OUT (AFO)
The switch ships with four fan modules and
two AC power supplies installed; all bearing
the label
.
AIR IN (AFI)
The switch ships with four fan modules and
two DC power supplies installed; all bearing
the label
.
AIR IN (AFI)
Figure 10 on page 19
shows the location of labels on the power supplies and fan modules
of an OCX1100-48SX switch.
Figure 10: Location of Airflow Labels on the Power Supplies and Fan
Modules of an OCX1100-48SX Switch
1—
Airflow labels on the fan modules
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 and fan modules with different airflow labels (
and
AIR OUT (AFO)
Fan modules with different airflow labels (
in the same chassis.
In the OCX1100 switch models that have front-to-back airflow, the air intake to cool the
chassis is through the vents on the front panel of the switch and hot air exhausts through
the vents on the rear panel. See
Chapter 3: Cooling System and Airflow
Direction of Airflow
Front-to-back—that is, air intake to cool the
chassis is through the vents on the front panel
of the chassis and hot air exhausts through
the vents on the rear panel of the chassis.
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.
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.
2—
Airflow labels on the power supplies
) in the same chassis
AIR IN (AFI)
Figure 11 on page
20.
AIR IN (AFI)
and
)
AIR OUT (AFO)
19
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