Extreme Networks 8820 Hardware Installation Manual page 44

Install a 1600 W Internal DC Power Supply
Install a 1600 W DC Power Supply
Before installing a 1600 W DC power supply (either part no. XN-DCPWR-1600W-F or part no. XN-
DCPWR-1600W-R):
•
Verify that the airflow direction for the power supply is the same as the airflow direction of the
installed fan modules in the switch.
To install the power supply, follow these steps:
Caution
The handle on the power supply is not designed to be used to lift or carry the power supply or
the switch to which it is attached.
1. Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an
appropriate ground point on the rack.
2. Remove a blank panel from the rear of the switch if necessary.
3. Verify that the power supply is right side up (label on the bottom).
4. Carefully slide the power supply all the way into the power supply bay.
5. Push the power supply in until the latch snaps into place.
6. To install a second power supply, repeat the procedure.
When you are finished, connect the ground wire to each power supply. See
a 1600 W DC Power
Connect the Ground Wire to a 1600 W DC Power Supply
Follow these steps to connect the ground wire to a 1600 W DC power supply.
Warning
Be sure to connect the chassis ground wire before you connect any power cables.
Warning
Be sure to disconnect the ground wire after you disconnect all power cables.
1. Verify that the DC circuit is de-energized.
2. Attach an ESD-preventive wrist strap to your bare wrist and connect metal end to an appropriate
ground point on the rack.
3. Connect the ground wire to the grounding point on the power supply, which is labeled GND. See
Figure
44 Extreme 8820 Hardware Installation Guide
Caution
Do not slam the power supply into the switch.
Supply.
24.
Install Your Switch
Connect the Ground Wire to