Figure 21: Air Out Airow Through QFX5200-48Y
Do Not Install Components with Dierent Airow or Waage in the Switch
Do not mix power supplies with dierent airow. If the power supplies are color-coded, ensure they are
either all match. Likewise, ensure that all fan modules have the same airow and match the airow of
the power supplies. Fan modules are also color-coded that match the power supplies.
Mixing components with dierent airows in the same chassis hampers the performance of the cooling
system of the switch and leads to overheang 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
automacally.
Do not mix fan modules with dierent waage. Only use the replacement fan modules that are designed
for use with your product number. See Table 15 on page 32 for the correct part number for your
QFX5200 device.
CAUTION: Do not mix AC and DC power supplies in the same QFX5200-32C or
QFX5200-32C-L chassis. You may mix AC and DC power supplies in the same
QFX5200-48Y chassis, but the fans and power supplies must have the same airow
direcon. Also note that load sharing is not the same for AC and DC power supplies.
However if you need to convert a QFX5200 device to have a dierent airow, you can change the
airow paern. To convert an AIR IN product SKU to an AIR OUT product SKU or an AIR OUT product
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