HP Parallel Uninterruptible Power System - Manual (Page 14)

UPS installation 14
Selecting a site
WARNING: To prevent fire or electric shock, install the unit in a temperature- and
humidity-controlled indoor environment, free of conductive contaminants.
When selecting a site, consider the following factors:
• Elevated operating ambient temperature—If the equipment is installed in a closed or multi-unit rack
assembly, the operating ambient temperature of the rack environment might be greater than room
ambient temperature. Install the equipment in an environment compatible with the operating
temperature (" Environmental specifications " on page 103 ).
• Reduced air flow—In the rack, the rate of air flow required for safe operation of the equipment must not
be compromised.
• Circuit overloading—Consideration should be given to the connection of the equipment to the supply
circuit and the effect that overloading of the circuits might have on overcurrent protection and supply
wiring. Appropriate consideration of equipment nameplate ratings should be used when addressing
this concern.
• Reliable earthing—Reliable earthing of rack-mounted equipment should be maintained. Particular
attention should be given to supply connections other than direct connections to the branch circuit, such
as the use of power strips.
• Electrical requirements—All models require a dedicated (unshared) branch circuit, suitably rated for the
specific UPS as stated in "Input specifications" .
Readying the equipment
1. Check the battery recharge date specified on the label that is affixed to the shipping carton.
IMPORTANT: Do not use the battery if the recharge date has passed. If the date on the battery
recharge date label has passed without the battery being recharged, contact an HP authorized
service representative for directions.
2. Transport the packaged unit to its installation location.
3. Unpack the equipment near the rack where the unit will be assembled.
Installing the mounting rails
WARNING: To reduce the risk of personal injury or damage to the equipment, be sure that:
• The leveling feet are extended to the floor.
• The full weight of the rack rests on the leveling feet.
• The stabilizing feet are attached to the rack if it is a single-rack installation.
• The racks are coupled together in multiple-rack installations.
• Only one component is extended at a time. A rack may become unstable if more than one
component is extended for any reason.
WARNING: A risk of personal injury or damage to the equipment exists. Uneven loading of
equipment in the rack might cause the rack to become unstable. Install the heavier components
first, and then continue to populate the rack from the bottom to the top.