Switch; Figure 8: Air Out Airflow Through Ex4600 Switch Chassis - Juniper EX4600 Series Hardware Manual

EX4600 Switch Hardware Guide
Do Not Install Components with Different Airflow or Wattage in the Switch
16

Figure 8: Air Out Airflow Through EX4600 Switch Chassis

Do not mix power supplies with different airflow labels (
modules with different airflow labels (
fan modules have labels, the power supplies must also have
AIR IN
fan modules have
AIR OUT
Mixing components with different airflows in the same chassis hampers the performance
of the cooling system of the switch and leads to overheating of 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.
Do not mix fans with different wattage. Only use the replacement fans that are designed
for use with your EX4600. See
switch product SKU.
CAUTION: Do not mix AC and DC power supplies in the same chassis.
However if you need to convert an EX4600 switch to have a different airflow, you can
change the airflow pattern. To convert an
SKU or an product SKU to a
AIR OUT
and power supplies at one time to use the new direction. The system raises an alarm
when the system is converted, which is normal.
AIR IN and AIR OUT
labels, the power supplies must also have
Table 6 on page 14 for the correct part number for your
product SKU to an
AIR IN
product SKU, you must replace all of the fans
AIR IN
and ) and fan
AIR IN AIR OUT
) in the same chassis. If the
labels; if the
AIR IN
labels.
AIR OUT
product
AIR OUT
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