Apple iMac (21.5-inch and 27-inch, Mid 2011) - Manual (Page 70)

70 Chapter 5 Last, but Not Least
Important Handling Information
NOTICE: Failure to follow these handling instructions could result in damage to your
iMac or other property.
Operating environment Operating your iMac outside these ranges may affect
performance:
 Operating temperature: 50° to 95° F (10° to 35° C)
 Storage temperature: -4° to 116° F (-20° to 47° C)
 Relative humidity: 5% to 95% (noncondensing)
 Maximum operating altitude: 10,000 feet (3048 meters)
Do not operate your iMac in areas with significant amounts of airborne dust, or smoke
from cigarettes, cigars, ashtrays, stoves, or fireplaces, or near an ultrasonic humidifier
using unfiltered tap water. Tiny airborne particles produced by smoking, cooking,
burning, or using an ultrasonic humidifier with unfiltered water may, in rare instances,
enter the ventilation openings of your iMac and, under certain conditions, result in a
slight haze on the inside surface of the glass panel that covers the iMac display.
Turning on your iMac Never turn on your iMac unless all of its internal and external
parts are in place. Operating the computer when parts are missing may be dangerous
and may damage your computer.
Carrying your iMac Before you lift or reposition your iMac, shut it down and
disconnect all cables and cords connected to it. To lift or move your iMac, hold its sides.