Table 12: Airflow Direction in QFX5120 Switch Models (continued)
Power Supplies
Direction of
Airflow in the Fan
Module
Color of the Fan
Module
Fan Modules and
Power Supply
Model Number
For switches that
have fan modules
with the AIR OUT
label, you must
install only power
supplies that have
the AIR OUT label.
Front-to-back—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.
Juniper Gold
The switch ships
with five fan
modules and two
DC power supplies,
each with a label
AIR OUT.
QFX5120-48Y-DC-AFO2
For switches that
have fan modules
with the AIR IN
label, you must
install only power
supplies that have
the AIR IN label.
Back-to-front—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.
Juniper Azure Blue
The switch ships
with five fan
modules and two
DC power supplies,
each with a label
AIR IN.
QFX5120-48Y-DC-AFI2
CAUTION:
Do not mix:
•
AC and DC power supplies in the same chassis.
•
Fan modules and power supplies with different airflow directions in the same chassis.
•
Power supplies and fan modules with different airflow labels (AIR IN and AIR OUT) in
the same chassis.
QFX5120 Models with Front-to-Back Airflow
In the QFX5120 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.
45
Содержание QFX5120 Series
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Страница 163: ...Restricted Access Warning 169 ...
Страница 178: ...Jewelry Removal Warning 184 ...
Страница 181: ...Operating Temperature Warning 187 ...
Страница 190: ...DC Power Disconnection Warning 196 ...
Страница 194: ...DC Power Wiring Sequence Warning 200 ...
Страница 197: ...DC Power Wiring Terminations Warning 203 ...