Planning the installation 9
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).
When installed in a rack, the enclosure must be used with an internal rack mount power
distribution unit (PDU) or uninterruptible power supply (UPS) that uses an industrial style wall plug
(for example, locking type NEMA or IEC 309 pin and sleeve configuration) which insures a
reliable protective earth ground connection.
When installed in a rack-free environment, the area must be designated as a restricted access
area, and the enclosure must be used with a dedicated uninterruptible power supply (UPS) that
uses an industrial style wall plug (for example, locking type NEMA or IEC 309 pin and sleeve
configuration) which insures a reliable protective earth ground connection.
Installation and maintenance must be performed by trained service personnel.
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
89
)."
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.
CAUTION:
Protect the equipment from AC power fluctuations and temporary interruptions with a
regulating facility UPS device. This device protects the hardware from damage caused by power
surges and voltage spikes and keeps the system in operation during a power failure.
IMPORTANT:
Data on the dimensions and weights of HP BladeSystem c-Class components can
be found in the
HP BladeSystem c-Class Maintenance and Service Guide
. The same data can be
determined by using the online HP BladeSystem c-Class Sizing Utility.
Temperature requirements
To ensure continued safe and reliable equipment operation, install or position the rack in a well ventilated,
climate-controlled environment.
The operating temperature inside the rack is always higher than the room temperature and is dependent on
the configuration of equipment in the rack. Check the TMRA for each piece of equipment before installation.
CAUTION:
To reduce the risk of damage to the equipment when installing third-party options:
•
Do not permit optional equipment to impede airflow around the enclosure or to increase the
internal rack temperature beyond the maximum allowable limits.
•
Do not exceed the manufacturer’s TMRA.
Space and airflow requirements
To enable servicing and ensure adequate airflow, observe the following spatial requirements when deciding
where to install an HP branded, Compaq branded, telco, or third-party rack:
•
Leave a minimum clearance of 63.5 cm (25 in) in front of the rack.
•
Leave a minimum clearance of 76.2 cm (30 in) in back of the rack.
