Installation guide

Installing Power Supplies in the BlackDiamond 20808 Switch
BlackDiamond 20808 Switch Hardware Installation Guide
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6 Connect the cables to the DC source voltage, using hardware appropriate to the installation site and
following local and national electrical codes.
7 Energize the DC circuit.
Leave the ESD strap permanently connected to the switch, so that the strap is always available when
you need to handle ESD-sensitive components.
Removing an Extreme Networks 1900 W DC PSU
WARNING!
Be sure to disconnect all power cables before you disconnect the chassis ground wire.
CAUTION
The DC PSU may be hot to the touch; use thermal protective gloves when handling the PSU during removal.
To remove an Extreme Networks 1900 W DC PSU:
1 De-energize the DC circuit.
2 Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to the ground
receptacle on the back of the chassis.
3 Disconnect the DC power cables as follows:
a Remove the cover from the terminal block.
b Remove the screws that secure the cable lugs to the terminal block.
c Move the wires away from the PSU.
4 Disconnect the ground wire as follows:
a Remove the nuts from the grounding post.
b Pull the connection lug off the grounding post and move the wire away from the PSU.
5 At each side, completely loosen the captive retaining screws and remove the power supply retainers
from the chassis.
6 Push the spring-loaded catch on each latch, and rotate the latches away from the front of the PSU to
disconnect the unit from the chassis.