Juniper QFX5120 Series Hardware Guide

5. Install the replacement fan.
6. Tighten the captive screws on the faceplate of the fan module by using your fingers. If you are unable
to tighten the captive screws by using your fingers, use the screwdriver.
Figure 59: Removing a Fan Module from a QFX5120 Switch
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NOTE: Both the fan modules must be installed and operational for optimal functioning of the
switch.
Installing a Fan Module in a QFX5120 Switch
QFX5120-48Y comes with 4+1 redundant fans and QFX5120-32C comes with 5+1 redundant fans. Each
fan module is a hot-removable and hot-insertable field-replaceable unit (FRU) installed in the rear panel
of the switch. You can remove and replace it without powering off the switch or disrupting switch functions.
CAUTION: Do not mix:
•
Fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same
chassis.
•
Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the
same chassis.
•
Power supplies and fan modules with different airflow labels (AIR IN (AFI) and AIR
OUT (AFO)) in the same chassis.
•
AC and DC power supplies in the same chassis.
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Juniper QFX5120 Series Specifications

General

Rack Units	1 U
Junos OS	Yes
Form Factor	Fixed
Power Supply	Dual, hot-swappable
Cooling	Front-to-back or back-to-front airflow
Fans	Hot-swappable
Operating Temperature	32°F to 104°F (0°C to 40°C)
Storage Temperature	-40°F to 158°F (-40°C to 70°C)
Humidity	5% to 90% non-condensing
AC Power Input	100 to 240 VAC
Management Ports	1x RJ-45 console, 1x USB, 1x RJ-45 management