HP 10622 Best practices for HP 10000 Series and HP 10000 G2 Series Racks - Page 16

Installation and maintenance precautions To reduce the risk of electric shock or damage to the equipment when installing, maintaining, or servicing Enterprise products, observe the general precautions listed in Table 5. Table 5. Rack installation and maintenance precautions Precaution Follow manufacturer instructions Be aware of power voltages and use trained personnel Secure all equipment Provide overhead clearance for fire sprinkler devices Description Always refer to the individual equipment installation instructions for any special considerations when installing equipment in a rack. Some Enterprise products are capable of producing hazardous voltages and hazardous energy levels. The installation of internal options and routine maintenance and service of these products should be performed only by individuals who are knowledgeable with the procedures, precautions, and hazards associated with this type of equipment. Refer to the documentation included with each product to determine whether it belongs in this category. Unless the equipment is installed in a restricted access area, rack equipment should be operated only with all enclosures in place and properly secured. Always refer to the equipment installation guide and observe all applicable warnings and precautions. A minimum clearance is required between the top of the rack and any fire protection sprinkler devices. Check your local building codes for details. Moving racks with casters Racks with casters should be moved with care. Sudden stops, excessive force, and uneven surfaces may cause the product to overturn. Both the 10000 and 10000 G2 Series Racks have casters which are fixed in the front and swivel in the rear due to stability and safety concerns. Therefore, it is both recommended and easier to move the rack with the back as the leading edge. For long, straight runs, roll the rack with the front, fixed casters leading. For maneuverability when moving the rack into a tight spot, it is better lead with the rear, swiveling casters. When rolling the rack, make sure to push firmly on the front door frame and not the door mesh. WARNING To reduce the risk of personal injury or damage to the equipment, do not attempt to move large equipment racks alone. Obtain adequate assistance to stabilize the rack during movement or hire professional equipment riggers. CAUTION To reduce the risk of damage to the casters, make sure that the full weight of the rack rests on the leveling feet, and not on the casters. The casters are designed only as an aid in moving the rack into position. They are not designed to support the weight of the rack, and the casters may become damaged if relied on to support the rack. Connecting and disconnecting power to hot-pluggable power supplies Observe the following guidelines when connecting and disconnecting power to the power supplies: • Unplug the power cord before removing the power supply from the server. • Install the power supply before connecting the power cord to the power supply. • Do not overload the AC supply branch circuit that provides power to the rack. The total rack load should not exceed 80 percent of the branch circuit rating. 14