Figure 24: 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 directionof airflowin the chassis.Ensure that each powersupply
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/!) LED blinks amber.
Table 14 on page 39 shows the different power supplies and their direction of airflow.
Table 14: Airflow Direction in QFX3500, QFX3600, and QFX3600-I Device DC Power Supplies
Direction of AirflowModel
FRU-to-portJPSU-650W-DC-AFI
Port-to-FRUJPSU-650W-DC-AFO
To avoid electrical injury, carefully follow instructions in “Connecting DC Power to a
QFX3500, QFX3600, or QFX3600-I Device” on page 88.
Related
Documentation
DC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 40•
• DC Power Specifications for a QFX3500 Device on page 57
• DC Power Specifications for a QFX3600 or QFX3600-I Device
AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device
Figure 25 on page 40 shows the location of the LEDs on the power supply.
39Copyright © 2017, Juniper Networks, Inc.
Chapter 4: Power Supplies
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