Heat and product ventilation
DANGER
Computers, ac adapters, and many accessories can generate heat when turned on
and when batteries are charging. Notebook computers can generate a significant
amount of heat due to their compact size. Always follow these basic precautions:

v When your computer is turned on or the battery is charging, the base, the palm

rest, and some other parts may become hot. Avoid keeping your hands, your lap,
or any other part of your body in contact with a hot section of the computer for
any extended length of time. When you use the keyboard, avoid keeping your
palms on the palm rest for a prolonged period of time. Your computer generates
some heat during normal operation. The amount of heat depends on the amount
of system activity and the battery charge level. Extended contact with your body,
even through clothing, could cause discomfort or even a skin burn. Periodically
take breaks from using the keyboard by lifting your hands from the palm rest;
and be careful not to use the keyboard for any extended length of time.

v Do not operate your computer or charge the battery near flammable materials or

in explosive environments.

v Ventilation slots, fans and/or 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.

v When the ac adapter is connected to an electrical outlet and your computer, it

generates heat. Do not place the adapter in contact with any part of your body
while using it. Never use the ac adapter to warm your body. Extended contact
with your body, even through clothing, may cause a skin burn.

For your safety, always follow these basic precautions with your computer:

v Keep the cover closed whenever the computer is plugged in.

v Regularly inspect the outside of the computer for dust accumulation.

v Remove dust from vents and any perforations in the bezel. More frequent

cleanings might be required for computers in dusty or high-traffic areas.

v Do not restrict or block any ventilation openings.

v Do not operate your computer inside furniture, as this might increase the risk of

overheating.

v Airflow temperatures into the computer should not exceed 35° C (95° F).

10 Lenovo 3000 Safety and Warranty Guide