BenQ MH741 User Manual page 5

Safety Instructions (Continued)
12. When the projector is under
operation, you may sense some
heated air and odor from its
ventilation grill. It is a normal
phenomenon and not a product
defect.
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)
Important safety instructions
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.
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