What safety precautions should I follow when using the HFD360 Air Purifier?

The air purifier must always be used in its upright position and should never be used outdoors, near water, in bathrooms, or where combustible gases are present. Always turn the unit OFF and unplug it when not in use, and never pull the cord to disconnect — grip the plug instead. Do not use the unit with a damaged cord, do not block air outlets or intakes, and disconnect power before performing any servicing. (Page 1)