Lenovo IDEAPAD U330 User Manual page 86

Chapter 6. Safety, Use, and Care Information
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.
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:
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 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).
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