Knoll Systems HDP404 - Manual (Page 23)

23
Maintenance
Cleaning the lens
1 Apply a non-abrasive camera lens cleaner to a
soft, dry cloth.
• Avoid using an excessive amount of cleaner,
and don’t apply the cleaner directly to the lens.
Abrasive cleaners, solvents or other harsh
chemicals might scratch the lens.
2 Lightly wipe the cleaning cloth over the lens in a
circular motion.
Lamp hours used
Replacing the projection lamp
The lamp hour’s timer in the Service Info menu counts the wait 60 minutes
number of hours the lamp has been in use. Twenty hours
before the lamp life expires a message appears on the
screen at startup indicating that you should change the
lamp. The LED on the top of the projector also blinks red
turn off and unplug the projector
twice to indicate that the lamp should be changed. Use only
a replacement lamp with the same type and rating as the
original lamp. Lamps can be purchased direct from Knoll or
the dealer that sold the projector.
1 Turn off the projector and unplug the power cord.
If ceiling mounted, disconnect all cables and
detach the projector from the ceiling mount.
2 Wait 60 minutes to allow the projector to
cool thoroughly.
3. Turn the projector upside down on a
soft cloth so that the lamp door is
facing you. Remove the base or ceiling
mount plate, if attached, by removing the three screws.
4.Loosen the two captive screws on the lamp door and lift it off.
5. Loosen the two captive screws that attach the lamp housing
to the projector.
6. Carefully remove the lamp housing. Dispose of the lamp in
an environmentally proper way.
WARNING:
To avoid burns, allow the projector to cool for at least 60 minutes before you replace the lamp.
Be extremely careful when removing the lamp housing. In the unlikely event that the bulb
ruptures, small glass fragments may be generated.
The lamp housing is designed to contain these fragments, but use caution when removing the
lamp housing. Before replacing the lamp, clean the lamp compartment and dispose of cleaning
materials. Make sure to wash your hands after lamp replacement. This product has a lamp, which
contains a very small amount of mercury. Dispose of it as required by local, state or federal
ordinances and regulations. For more information see www.eiae.org.