NEC NC900C Installation Manual page 4

Important Information
8. Do not place heavy objects on top of the projector.
9. Turn off the projector, and disconnect the power cable
before moving the projector.
10. The cooling fan settings need to be configured when
using the projector in a location at an altitude of approxi-
mately 5500 feet/1600 meters or higher. Refer to "About
High Altitude mode" (page 6) for details.
11. If you wish to have the projector installed on the ceiling;
• Do not attempt to install the projector yourself.
• The projector must be installed by qualified techni-
cians in order to ensure proper operation and reduce
the risk of bodily injury.
• In addition, the ceiling must be strong enough to sup-
port the projector and the installation must be in accor-
dance with any local building codes.
• Please consult your dealer for more information.
Refer to "2-2-1. Installing the Projector on the Ceiling"
(page 30) for details on the attachment positions when
installing on the ceiling.
WARNING:
1. Do not cover the lens with the supplied lens cap or
equivalent while the projector is on. Doing so can lead
to distorting or melting of the cap and burning your
hands due to the heat emitted from the light output.
2. Do not place any objects, which are easily affected by
heat, in front of the projector lens. Doing so could lead
to the object melting from the heat that is emitted from
the light output.
Do not tilt the projector forward or back at a greater angle
than 15°. Doing so may result in malfunction. When mounting
the projector on the ceiling, select an appropriate option for
[Fan Tilt Setting].
15°
15°
4
Power Supply
1. The projector is so designed that it operates with the
power supply voltage described below.
• AC100–130V 10.3 to 7.9 A 50/60Hz Single-phase
• AC200–240V 5.1 to 4.3 A 50/60Hz Single-phase
Ensure that your power supply fits this requirement
before attempting to use your projector.
2. The power cable is not included with the projector. Use a
power cable that meets the standards and power supply
voltage of the country where you are using the projector.
Refer to "2-3. Selecting the Power Cable (English)" for
details.
3. Handle the power cable carefully. A damaged or frayed
power cable can cause electric shock or fire.
• Do not bend or tug the power cable excessively.
• Do not place the power cable under the projector, or
any heavy object.
• Do not cover the power cable with other soft materials
such as rugs.
• Do not heat the power cable.
4. Placing the power cable and the signal cable closely to
each other can cause beat noise. If this happens, keep
the two separated so that beat noise is not generated.
Beat noise is corruption of the picture often seen as a
rolling band moving through the image.
5. Do not touch the projector during a thunder storm. Doing
so can cause electrical shock or fire.
6. When installed on the ceiling, install the breaker in a loca-
tion that is easy to reach by hand.
For UK only: In UK, a BS approved power cable with
moulded plug has a Black (five Amps) fuse installed for
use with this equipment. If a power cable is not supplied
with this equipment please contact your supplier.
Fire and Shock Precautions
1. Ensure that there is sufficient ventilation and that vents
are unobstructed to prevent potentially dangerous con-
centrations of ozone and the build-up of heat inside your
projector. Allow at least 12 inches (30cm) of space
between your projector and a wall. In particular, clear a
space of 27.6 inches (70 cm) or more in front of the air
outlet on the rear surface and 19.8 inches (50 cm) or
more in front of the air outlet on the lamp side. (See page
15)
2. Prevent foreign objects such as paper clips and bits of
paper from falling into your projector. Do not attempt to
retrieve any objects that might fall into your projector. Do
not insert any metal objects such as a wire or screwdriver
into your projector. If something should fall into your pro-
jector, disconnect it immediately and have the object
removed by a qualified service person.