HP 354556-002 - Manual (Page 10)

10 HP BladeSystem p-Class Enclosure Installation Guide
Each power enclosure has two or more power supply cords. A
single rack or cabinet may contain more than one power
enclosure. Power may be supplied in a redundant fashion.
Removing any single source of power does not necessarily
remove power from any portion of the system. When
performing any service other than hot-plug module
replacement, you must completely disconnect all power to that
portion of the system. •
•
•
When performing service procedures on server blade
enclosures, ensure that both A and B DC power feeds are
disconnected from the enclosure before servicing.
When performing service procedures on power enclosures,
shut off the circuit breakers to both A and B AC power feeds
and then disconnect both power cords from the wall outlet
before servicing.
WARNING: To reduce the risk of personal injury from hot
surfaces, allow the drives and the internal system components to
cool before touching them.
WARNING: To reduce the risk of electric shock or damage
to the equipment, enter enclosures or perform service on system
components only as instructed in the user documentation.
WARNING: A risk of electric shock from high leakage
current exists. Before connecting the AC supply to the power
enclosures, be sure that the electrical outlets are properly
grounded (earthed).
CAUTION: Always be sure that equipment is properly
grounded and that you follow proper grounding procedures before
beginning any installation procedure. Improper grounding can result in
ESD damage to electronic components. For more information, refer to,
"Electrostatic Discharge (on page
93 )."
CAUTION: When performing non-hot-plug operations, you
must power down the server blade and/or the system. Use caution
when performing other operations, such as hot-plug installations or
troubleshooting.