Installation guide

Safety Information
BlackDiamond 20808 Switch Hardware Installation Guide
114
Installing Power Supply Units
For the ratings and power requirements of each power supply unit, see Appendix B, “Technical
Specifications,”or the data sheet for the power supply at http://www.extremenetworks.com.
WARNING!
Be sure that the requirements listed in this section are satisfied when installing all Extreme Networks power
supplies.
When you install power supplies:
● Plug power supplies only into properly grounded electrical outlets to help prevent electrical shock
and comply with international safety standards.
● Use only power cords that are certified for use within the country of use. Do not attempt to modify
AC power cords.
● The wall outlet must be installed near the equipment and be easily accessible for quick disconnect.
● Make sure the voltage and frequency of your power outlet match the equipment’s system’s electrical
ratings. The building and/or power source must provide overload protection.
● Use a surge suppressor, line conditioner, or uninterruptible power supply to protect the system from
momentary increases or decreases in electrical power.
● For hot-swappable power supplies, do not slam the PSU into the bay.
● If multiple power supplies are used in a switch, connect each power supply to a different,
independent power source. If a single power source fails, it will affect only that power supply to
which it is connected. If all the power supplies on a single switch are connected to the same power
source, the entire switch is vulnerable to a power failure.
WARNING!
Extreme Networks DC PSUs do not have switches for turning the unit on and off. Make sure that the DC circuit is
de-energized before connecting or disconnecting the DC power cord at the DC power socket on the Extreme
Networks DC PSU.
Wiring an Extreme Networks DC PSU DC power cord to your facility DC source voltage must be performed by a
qualified, licensed electrician.
Do not connect the power supply to an electrical outlet when the power supply is outside the chassis; doing so
would expose a hazardous energy and poses a potential shock and fire hazard.
Do not put your hand into an open power supply bay when a power supply is not present. Unused power supply bays
require an installed PSU blank at all times.
Maintenance Safety
When you perform maintenance procedures on Extreme Networks equipment, follow these
recommendations:
● Use only original accessories and/or components approved for use with this system. Failure to
observe these instructions may damage the equipment or even violate required safety and EMC
regulations.