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Do Not Install AIR IN (AFI) and AIR OUT (AFO) Components in the Same Chassis
Positioning the Switch
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Documentation
Copyright © 2017, Juniper Networks, Inc.
Do not install power supplies and fan modules with different airflow labels (
and
) in the same chassis. If the fan modules have
AIR OUT (AFO)
power supplies must also have
labels, the power supplies must also have
The labels on the power supplies and fan modules should match the labels on the switch
chassis.
Mixing components with
AIR IN (AFI)
hampers the performance of the cooling system of the switch and leads to overheating
of the chassis.
Under normal operating conditions, the fan modules operate at a moderate speed.
Temperature sensors in the chassis monitor the temperature within the chassis.
CAUTION:
The system raises an alarm if a fan module fails or if the ambient
temperature inside the chassis rises above the acceptable range. If the
temperature inside the chassis rises above the threshold temperature, the
system shuts down automatically.
In front-to-back airflow, indicated by the label
power supplies, hot air exhausts through the vents on the rear panel of the switch. In
back-to-front airflow, indicated by the label
supplies, hot air exhausts through the vents on the front panel of the switch.
In data center deployments, position the switch in such a manner that the
labels on switch components are next to the cold aisle, and
switch components are next to the hot aisle.
OCX1100 Switches Hardware Overview on page 3
Field-Replaceable Units in OCX1100 Switches on page 12
Installing a Fan Module in an OCX1100 Switch on page 105
Removing a Fan Module from an OCX1100 Switch on page 106
Prevention of Electrostatic Discharge Damage on page 167
Chapter 3: Cooling System and Airflow
labels; if the fan modules have
AIR IN (AFI)
AIR OUT (AFO)
and
AIR OUT (AFO)
AIR OUT (AFO)
AIR IN (AFI)
on the fan modules and power
AIR IN (AFI)
labels, the
AIR IN (AFI)
AIR OUT (AFO)
labels.
labels in the same chassis
on the fan modules and
AIR IN (AFI)
AIR OUT (AFO)
labels on
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