BenQ TH670 User Manual page 5

Safety Instructions (Continued)
13. Do not place this projector in any of
the following environments.
- Space that is poorly ventilated or
confined. Allow at least 50 cm
clearance from walls and free flow of
air around the projector.
- Locations where temperatures may
become excessively high, such as the
inside of a car with all windows
rolled up.
- Locations where excessive humidity,
dust, or cigarette smoke may
contaminate optical components,
shortening the projector's life span
and darkening the image.
- Locations near fire alarms
- Locations with an ambient
temperature above 40°C / 104°F
- Locations where the altitudes are
higher than 3000 m (10000 feet).
3000 m
(10000
feet)
0 m
(0 feet)
14. Do not block the ventilation holes.
- Do not place this projector on a
blanket, bedding or any other soft
surface.
- Do not cover this projector with a
cloth or any other item.
- Do not place inflammables near the
projector.
If the ventilation holes are seriously
obstructed, overheating inside the
projector may result in a fire.
15. Always place the projector on a
level, horizontal surface during
operation.
- Do not use if tilted at an angle of
more than 10 degrees left to right,
nor at angle of more than 15
degrees front to back. Using the
projector when it is not fully
horizontal may cause a malfunction
of, or damage to, the lamp.
Important safety instructions 5