Extreme Networks Extreme 7520 Series - Remove and Replace Components; Replace Internal Power Supplies; Replace Fan Modules

Remove and Replace Components
Replace Internal Power Supplies on page 73
Replace Fan Modules on page 73
Remove the Device from the Rack on page 74
You can replace internal power supplies and fan modules, as needed, while the device
is operating ("hot swapping").
For each device, ensure that all installed power supplies and fan modules have the
same the airow direction: either front-to-back or back-to-front.
Follow the procedures in this section to remove and replace power supplies and fan
modules, and to remove a device from a rack.
Replace Internal Power Supplies
You can replace internal power supplies as needed while the switch is operating ("hot
swapping").
All installed power supplies must have the same airow direction (front-to-back or
back-to-front) and must also match the airow direction of the fan modules.
• If the power supply module has a red tab, the airow is front-to-back.
• If the power supply module has a blue tab, the airow is back-to-front.
To replace one or both AC internal power supplies in an Extreme 7520 Series switch,
follow the steps in Install an 800 W Internal AC Power Supply on page 60.
To replace one or both DC internal power supplies in an Extreme 7520 Series switch,
follow the steps in Install an 800 W Internal DC Power Supply on page 63.
Replace Fan Modules
You can replace fan modules as needed while the switch is operating ("hot swapping").
All installed fan modules must blow air in the same direction and must match the
airow direction of the installed power supplies.
• If the fan module has a red tab, the airow is front-to-back. Use a fan module labeled
Air Out.
Extreme 7520 Hardware Installation Guide 73