Ac Power Supply Airflow; Table 28: Airflow Direction In Ac Power Supply Models For Ex4300 Switches - Juniper EX4300 Hardware Manual

Table 27: Details of the AC Power Supplies in EX4300 Switches (continued)
Details
Airflow
AC power cord retainer
Power supply status LEDs
Operating range

AC Power Supply Airflow

Table 28: Airflow Direction in AC Power Supply Models for EX4300 Switches

Label on Power
Model Supply
JPSU-350-AC-AFO-A AIR OUT (AFO)
JPSU-350-AC-AFI-A
AIR IN (AFI)
JPSU-715-AC-AFO-A
AIR OUT (AFO)
JPSU-1100-AC-AFO-A
AIR OUT (AFO)
Copyright © 2017, Juniper Networks, Inc.
350 W AC Power Supply
Front-to-back, indicated
by label
AIR OUT (AFO)
Back-to-front, indicated
by label
AIR IN (AFI)
1
and
IN OK OUT OK
100–240 VAC
To prevent electrical injury while installing or removing AC power supplies, carefully follow
instructions in "Installing an AC Power Supply in an EX4300 Switch" on page 233
"Removing an AC Power Supply from an EX4300 Switch" on page
Each power supply has its own fan and is cooled by its own internal cooling system.
Each power supply has a label
power supply that indicates the direction of airflow in the power supply.
Table 28 on page 51 lists the AC power supply models and the direction of airflow in
them.
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.
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.
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.
715 W AC Power Supply
Front-to-back, indicated by
label
AIR OUT (AFO)
1
and
IN OK OUT OK
100–240 VAC
AIR OUT (AFO) or AIR IN (AFI)
Chapter 4: Power Supplies
1100 W AC Power Supply
Front-to-back, indicated by
label
AIR OUT (AFO)
1
and
IN OK OUT OK
115–240 VAC
and
235.
on the faceplate of the
51