Installation Guide

10 Replacing DC Power Supplies
Replacing a Summit 300 W DC Power Supply
Replacing a Summit 550 W DC Power Supply
Replacing a 750 W Internal DC Power Supply
Replacing a Summit 1100 W DC Power Supply
This chapter describes how to replace internal DC power supplies in an Extreme Networks switch. These
switches have two bays for hot-swappable power supplies. In a switch with a redundant power
configuration, you can replace one DC power supply without powering down the switch.
See Replaceable Internal Power Supplies on page 104 for a list of which internal DC power supplies are
compatible with the switch you are using.
Replacing a Summit 300 W DC Power Supply
The following instructions apply to both of the 300 W DC power supplies (part numbers 10933 and
10944).
You need the following tools and materials to replace a Summit 300 W DC power supply:
•
#2 Phillips screwdriver
•
Torque screwdriver and wrench or torque driver with attachments for tightening screws and nuts
•
Thermal protective gloves (required for removal of a power supply)
Warning
Be sure to disconnect all power cables before you disconnect the chassis ground wire.
Removing a 300 W DC Power Supply
To remove an installed Summit 300 W DC power supply, follow these steps:
1 De-energize the DC circuit.
2 Disconnect the DC power cables:
a Pull the cover o the terminal block.
b Loosen the screws that secure the cable terminals to the terminal block.
c Slide the wires out from under the captive washers.
Warning
Be sure to disconnect all power cables before you disconnect the chassis ground wire.
3 Disconnect the ground wire:
a Remove the screw that secures the ground wire to the power supply.
b Move the wire away from the power supply.
ExtremeSwitching and Summit Switches: Hardware Installation Guide 279