HP BladeSystem bc2500 Setup and Installation Guide HP BladeSystem bc2000 and b - Page 21

HP PC Blade Enclosure Warnings and Cautions

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CAUTION: If an HP or third-party rack is used, observe the following additional requirements to ensure adequate airflow and to prevent damage to the equipment: Front and rear doors: If the 42U rack includes closing front and rear doors, you must allow 5,350 sq cm (830 square inches) of holes evenly distributed from top to bottom to permit adequate airflow (equivalent to the required 64 percent open area for ventilation). Side: The clearance between the installed rack component and the side panels of the rack must be a minimum of 7 cm (2.75 inches). CAUTION: The PC Blade Enclosure is shipped without blanking panels. Always use blanking panels (available as an option) to fill all remaining empty front panel U-spaces in the rack. This arrangement ensures proper airflow. Using a rack without blanking panels results in improper cooling that can lead to thermal damage. HP PC Blade Enclosure Warnings and Cautions Before installing the HP PC Blade Enclosure, carefully review the following warnings and cautions: WARNING! To reduce the risk of personal injury or damage to equipment, heed all warnings and cautions throughout the installation instructions. WARNING! A risk of injury or damage to the equipment from hazardous energy is present. The access door provides access to hazardous energy circuits. The door should remain locked during normal operation or troubleshooting, or the system should be installed in a controlled access location where only qualified personnel have access to the system. WARNING! To reduce the risk of electrical shock or damage to the equipment: Only enter or perform service on specific parts of the HP PC BladeSystem PC Blade technology as instructed in the user documentation. Do not disable the power cord grounding plugs. The grounding plugs are an important safety feature. Plug both power cords into a grounded (earthed) electrical outlet that is easily accessible at all times. Unplug the power cords from the power supplies to disconnect power to the enclosure. WARNING! To reduce the risk of personal injury from hot surfaces, allow the internal system components to cool before touching them. WARNING! The HP PC Blade Enclosure is very heavy. To reduce the risk of personal injury or damage to the equipment: Observe local occupational health and safety requirements and guidelines for manual material handling. Remove blade PCs and power supplies from the enclosures before installing or removing the enclosures. Use caution and get help to lift and stabilize an enclosure during installation or removal, especially when the enclosure is not fastened to the rack. If the enclosure is being loaded into the rack above chest level, a third person MUST assist with aligning the enclosure with the rails while the other two people support the weight of the enclosure. WARNING! The HP PC Blade Enclosure has two power cords for redundant AC power sources. If it is necessary to remove power for servicing, disconnect all power by removing both power supply cords from either the wall or the AC connectors on the rear of the enclosure. CAUTION: When servicing non-hot-plug components, you must power down the blade PCs and/or the enclosure and blade PCs. However, it may be necessary to leave the blade PCs powered up when performing other operations, such as hot-plug replacement or troubleshooting. CAUTION: Protect your equipment from power fluctuations and temporary interruptions with a regulating 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. ENWW HP PC Blade Enclosure Warnings and Cautions 13

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CAUTION:
If an HP or third-party rack is used, observe the following additional requirements to ensure
adequate airflow and to prevent damage to the equipment: Front and rear doors: If the 42U rack includes
closing front and rear doors, you must allow 5,350 sq cm (830 square inches) of holes evenly distributed
from top to bottom to permit adequate airflow (equivalent to the required 64 percent open area for
ventilation). Side: The clearance between the installed rack component and the side panels of the rack
must be a minimum of 7 cm (2.75 inches).
CAUTION:
The PC Blade Enclosure is shipped without blanking panels. Always use blanking panels
(available as an option) to fill all remaining empty front panel U-spaces in the rack. This arrangement
ensures proper airflow. Using a rack without blanking panels results in improper cooling that can lead
to thermal damage.
HP PC Blade Enclosure Warnings and Cautions
Before installing the HP PC Blade Enclosure, carefully review the following warnings and cautions:
WARNING!
To reduce the risk of personal injury or damage to equipment, heed all warnings and
cautions throughout the installation instructions.
WARNING!
A risk of injury or damage to the equipment from hazardous energy is present. The access
door provides access to hazardous energy circuits. The door should remain locked during normal
operation or troubleshooting, or the system should be installed in a controlled access location where
only qualified personnel have access to the system.
WARNING!
To reduce the risk of electrical shock or damage to the equipment: Only enter or perform
service on specific parts of the HP PC BladeSystem PC Blade technology as instructed in the user
documentation. Do not disable the power cord grounding plugs. The grounding plugs are an important
safety feature. Plug both power cords into a grounded (earthed) electrical outlet that is easily accessible
at all times. Unplug the power cords from the power supplies to disconnect power to the enclosure.
WARNING!
To reduce the risk of personal injury from hot surfaces, allow the internal system
components to cool before touching them.
WARNING!
The HP PC Blade Enclosure is very heavy. To reduce the risk of personal injury or damage
to the equipment: Observe local occupational health and safety requirements and guidelines for manual
material handling. Remove blade PCs and power supplies from the enclosures before installing or
removing the enclosures. Use caution and get help to lift and stabilize an enclosure during installation
or removal, especially when the enclosure is not fastened to the rack. If the enclosure is being loaded
into the rack above chest level, a third person MUST assist with aligning the enclosure with the rails
while the other two people support the weight of the enclosure.
WARNING!
The HP PC Blade Enclosure has two power cords for redundant AC power sources. If it
is necessary to remove power for servicing, disconnect all power by removing both power supply cords
from either the wall or the AC connectors on the rear of the enclosure.
CAUTION:
When servicing non-hot-plug components, you must power down the blade PCs and/or
the enclosure and blade PCs. However, it may be necessary to leave the blade PCs powered up when
performing other operations, such as hot-plug replacement or troubleshooting.
CAUTION:
Protect your equipment from power fluctuations and temporary interruptions with a
regulating 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.
ENWW
HP PC Blade Enclosure Warnings and Cautions
13