Dell PowerEdge 4400 - Manual (Page 56)

l Position cables and power cords carefully; route cables and the power cord and plug so that they cannot be stepped on or tripped over. Be
sure that nothing rests on your system components
’ cables or power cord.
l Do not modify power cables or plugs. Consult a licensed electrician or your power company for site modifications. Always follow your
local/national wiring rules.
l To help avoid possible damage to the system board, wait 5 seconds after turning off the system before removing a component from the
system board or disconnecting a peripheral device from the computer.
l Handle batteries carefully. Do not disassemble, crush, puncture, short external contacts, dispose of in fire or water, or expose batteries to
temperatures higher than 60 degrees Celsius (140 degrees Fahrenheit). Do not attempt to open or service batteries; replace batteries only
with batteries designated for the product.
l Turn down the volume before using headphones or other audio devices.
Precautions for Server and Storage Systems
Follow the additional safety guidelines for your system:
l Unless your installation and/or troubleshooting documentation specifically allows it, do not remove enclosure covers, attempt to override the
safety interlocks, or access any components inside the system. Depending on your system, installation and repairs may be done only by
individuals who are qualified to service your computer or storage system equipment and trained to deal with products capable of producing
hazardous energy levels.
l
When connecting or disconnecting power to hot-pluggable power supplies, if offered with your Dell product, observe the following guidelines:
¡ Install the power supply before connecting the power cable to the power supply.
¡ Unplug the power cable before removing the power supply.
¡ If the system has multiple sources of power, disconnect power from the system by unplugging all power cables from the power
supplies.
l
Move products with care; ensure that all casters and/or stabilizers are firmly connected to the computer or storage system. Avoid sudden
stops and uneven surfaces.
Precautions for Rack-Mountable Products
Observe the following precautions for rack stability and safety. Also refer to the rack installation documentation accompanying the system and the
rack for specific warning and/or caution statements and procedures.
l System rack kits are intended to be installed in a Dell rack by trained service technicians. If you install the kit in any other rack, be sure that
the rack meets the specifications of a Dell rack.
l
Do not move large racks by yourself. Due to the height and weight of the rack, Dell recommends a minimum of two people to accomplish this
task.
l
Before working on the rack, make sure that the stabilizers are secure to the rack, extend to the floor, and that the full weight of the rack rests
on the floor. Install front and side stabilizers on a single rack or front stabilizers for joined multiple racks before working on the rack.
l Always load the rack from the bottom up, and load the heaviest item in the rack first.
l Make sure that the rack is level and stable before extending a component from the rack.
l
Extend only one component at a time from the rack.
l Use caution when pressing the component rail release latches and sliding a component into or out of a rack; the slide rails can pinch your
fingers.
l After a component is inserted into the rack, carefully extend the rail into a locking position, and then slide the component into the rack.
l
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.
WARNING: Installing Dell system components in a Dell rack without the front and side stabilizers installed could cause the
rack to tip over, potentially resulting in bodily injury under certain circumstances. Therefore, always install the stabilizers
before installing components in the rack.
After installing system components in a rack, never pull more than one component out of the rack on its slide assemblies at
one time. The weight of more than one extended component could cause the rack to tip over and injure someone.
NOTE: Dell’s server and storage systems are certified as components for use in Dell’s rack cabinet using the Dell customer rack kit.
The final installation of Dell systems and rack kits in any other brand of rack cabinet has not been approved by any safety agencies. It is
the customer’s responsibility to have the final combination of Dell systems and rack kits for use in other brands of rack cabinets
evaluated for suitability by a certified safety agency.