read or watch TV) as long as you sit within 60 cm of the apparatus. • Do not look directly into the light constantly, but look at it regularly. • Always turn the appliance off using the on/off button, and unplug it, when it is not in use. Allow to cool for at least 15 minutes before putting it away or carrying it by the handle (4). REPLACING LIGHT TUBES Normal tube (8) lifetime is approx. 10,000 hours of normal use. If a tube fails, it must be replaced. • Slacken the retaining screws (5) on the