Extreme Networks Summit X150 Series, Руководство по установке оборудования

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Chapter 9: Replacing AC Power Supplies in Summit Family Switches
Summit Family Switches Hardware Installation Guide
344
Replacing a Summit 450 W or 550 W AC Power
Supply
Summit 450 W AC power supplies are compatible with the Summit X480 series switches and with
Summit X670 series switches that have front-to-back ventilation airflow.
The Summit 550 W AC power supplies are compatible only with Summit X670 series switches. The
550 W AC power supplies are available in versions for switches with either front-to-back or
back-to-front airflow.
The Summit X480 and X670 switches have two bays for hot-swappable power supplies. In a switch with
a redundant power configuration, you can replace one Summit AC power supply without powering
down the switch.
NOTE
You cannot combine 450 W power supplies and 550 W power supplies in the same Summit
X670 series switch.
You need the following tools and materials to replace a Summit 450 W or 550 W AC power supply:
● Thermal protective gloves
●
AC power cord, if you will not be re-using the cord from the removed power supply
An AC power cord is not included with the Summit AC power supply. You must obtain a power
supply cord that meets the requirements listed under
“Power Cord Requirements for AC-Powered
Switches and AC Power Supplies” on page 500
.
To replace a Summit 450 W or 550 W AC power supply:
1
Disconnect the AC power cord from the wall outlet and from the power supply.
2
Note the orientation of the installed power supply.
3 For a Summit X670 series switch, note the direction of ventilation airflow, and verify that the power
supply airflow direction is the same as that of the switch.
●
In a switch with front-to-back airflow, the fan modules are labeled Air Out .
●
In a switch with back-to-front, the fan modules are labeled Air In .
4 Push the latching tab toward the power supply handle and pull outward on the handle to disengage
the power supply internal connectors (see
Figure 4 ).