Computer Placement Notices; Operating Environment - Lenovo 30BY User Manual

• Do not charge the battery or operate your computer, power adapter, or accessories near flammable
materials or in explosive environments.
• Ventilation slots, fans, and heat sinks are provided with the product for safety, comfort, and reliable
operation. These features might inadvertently become blocked by placing the product on a bed, sofa,
carpet, or other flexible surface. Never block, cover, or disable these features.
Inspect your desktop computer for dust accumulation at least once every three months. Before inspecting
your computer, turn off the power and unplug the computer's power cord from the electrical outlet; then
remove any dust from vents and perforations in the bezel. If you notice external dust accumulation, then
examine and remove dust from the inside of the computer including heat sink inlet fins, power supply vents,
and fans. Always turn off and unplug the computer before opening the cover. If possible, avoid operating
your computer within two feet of high-traffic areas. If you must operate your computer in or near a high-traffic
area, inspect and, if necessary, clean your computer more frequently.
For your safety and to maintain optimum computer performance, always follow these basic precautions with
your desktop computer:
• Keep the cover closed whenever the computer is plugged in.
• Regularly inspect the outside of the computer for dust accumulation.
• Remove dust from vents and any perforations in the bezel. More frequent cleanings might be required for
computers in dusty or high-traffic areas.
• Do not restrict or block any ventilation openings.
• Do not store or operate your computer inside furniture, as this might increase the risk of overheating.
• Airflow temperatures into the computer should not exceed 35°C (95°F).
• Do not install air filtration devices. They may interfere with proper cooling.

Computer placement notices

Inappropriate computer placement might cause harm to children.
• Place the computer on a sturdy piece of low-rise furniture or furniture that has been anchored.
• Do not place the computer at the edge of the furniture.
• Keep the computer cables out of the reach of children.
• Some items, such as toys, might attract children. Keep such items away from the computer.
Supervise children in rooms where the above safety instructions cannot be fully implemented.

Operating environment

The optimal environment in which to use your computer is 10°C–35°C (50°F–95°F) with humidity ranging
between 35% and 80%. If your computer is stored or transported in temperatures less than 10°C (50°F),
allow the cold computer to rise slowly to an optimal operating temperature of 10°C–35°C (50°F–95°F) before
use. This process could take two hours in extreme conditions. Failure to allow your computer to rise to an
optimal operating temperature before use could result in irreparable damage to your computer.
If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine.
Keep electrical appliances such as an electric fan, radio, high-powered speakers, air conditioner, and
microwave oven away from your computer because the strong magnetic fields generated by these
appliances can damage the monitor and data on the storage drive.
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P520c User Guide