Precautions Specific To Fan Assemblies; Identifying The Airflow Direction - Extreme Networks ExtremeRouting SLX 9740 Hardware Installation Manual

Fan Assemblies

Precautions specific to fan assemblies

Warning
Be careful not to accidently insert your fingers into the fan tray while removing it from the
chassis. The fan may still be spinning at a high speed.
Caution
Disassembling any part of the power supply and fan assembly voids the warranty and
regulatory certifications. There are no user-serviceable parts inside the power supply and fan
assembly.
Caution
Ensure that the airflow direction of the power supply unit matches that of the installed fan
tray. The power supplies and fan trays are clearly labeled with either a green arrow with an
"E", or an orange arrow with an "I."
Caution
If you do not install a module or a power supply in a slot, you must keep the slot filler panel in
place. If you run the chassis with an uncovered slot, the system will overheat.

Identifying the airflow direction

The power supply and fan assemblies are identified by the following airflow directions:
•
Intake power supply and fan assembly with an orange "I" label or without any label: Pulls air from the
nonport-side of the switch and exhausts it out the port side.
•
Exhaust power supply and fan assembly with a green "E" label: Pulls air from the port side of the
switch and exhausts it out the nonport-side.
•
You can check the top view of the switch to ensure proper groove alignment:
Precautions specific to fan assemblies
Nonport-side air intake
◦
Port-side air exhaust
◦
Back-to-front (nonport-side to port-side)
◦
airflow
Part numbers ending with -R
◦
Nonport-side air exhaust
◦
Port-side air intake
◦
Front-to-back (port-side to nonport-side)
◦
airflow
Part numbers ending with -F
◦
ExtremeRouting SLX 9740 Hardware Installation Guide 73