Figure 77: Label Identifying Airflow Direction On Power Supply Handle; Table 21: Airflow Direction In Qfx3500, Qfx3600, And Qfx3600-I Device Dc - Juniper QFabric QFX3000-G Hardware Documentation

QFX3000-G QFabric System Hardware Documentation
Table 21: Airflow Direction in QFX3500, QFX3600, and QFX3600-I Device DC Power Supplies
Model
JPSU-650W-DC-AFI
JPSU-650W-DC-AFO
Related
Documentation
114
To supply sufficient power, terminate the DC input wiring on a facility DC source that is
capable of supplying a minimum of 7 A at –48 VDC for QFX3500 and 8 A a5 –48 VDC
for QFX3600..
The power supply provides FRU-to-port or port-to-FRU airflow depending on the SKU
you purchase. The power supplies have labels and arrows on the handles that depict the
direction of airflow (see Figure 77 on page
denotes port-to FRU airflow.
AFO

Figure 77: Label Identifying Airflow Direction on Power Supply Handle

1— Airflow in indicator
CAUTION: Verify that the airflow direction of the power supply handle
matches the direction of airflow in the chassis. Ensure that each power supply
you install in the chassis has the same airflow direction. If you install power
supplies with two different airflow directions, Junos OS raises an alarm, and
the status ( OK/!
Table 21 on page 114 shows the different power supplies and their direction of airflow.
To avoid electrical injury, carefully follow instructions in
QFX3500, QFX3600, or QFX3600-I Device" on page
DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 754
DC Power Specifications for a QFX3500 Device on page 301
DC Power Specifications for a QFX3600 or QFX3600-I Device on page 297
114). The label
) LED blinks amber.
Direction of Airflow
FRU-to-port
Port-to-FRU
AFI denotes FRU-to-port airflow.
"Connecting DC Power to a
466.
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