• The airflow direction of the fan assembly must match that of the installed fan trays. All must be
either exhaust or intake.
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."
Inserting a new fan assembly
Use the following steps to install a fan assembly in the SLX 9640 device.
1. Fan assembly slot
2. Fan assembly
3. Captive screw
Figure 49: Installing a fan assembly
1. If replacing a fan assembly:
a. Using a Phillips screwdriver, unscrew the captive screw on the fan assembly.
b. Remove the fan assembly from the chassis by pulling the handle on the fan assembly out and
away from the chassis.
c. Ensure that the replacement fan assembly has the same part number and airflow label as the fan
assembly being replaced.
2. If installing a new fan assembly into a slot covered with a filler panel:
a. Using a Phillips screwdriver, unscrew the captive screw on the filler panel.
b. Remove the filler panel.
3. Before opening the package that contains the new fan assembly, touch the bag to the switch casing
to discharge any potential static electricity. It is recommended that you wear an ESD wrist strap
during installation.
Fan Assemblies
Inserting a new fan assembly
ExtremeRouting SLX 9640 Hardware Installation Guide 91
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