Knoll Systems HD225 - Manual (Page 25)

25
Cleaning the dust filters
In dirty or dusty environments, the
dust filters can become clogged,
causing high temperatures inside the
lamp module. These high
temperatures can impact lamp
performance and operating life.
Routine maintenance to remove dust
and dirt from the filters lowers the
lamp operating temperature and
prolongs lamp life. To maximize lamp
life you will need to clean the filters
every 250 hours. Lamp filter
maintenance may need to occur more
often than 250 hours depending on
your installation/use environment.
There are two filters, one mesh filter attached to the dust filter door and one
metal grid filter adjacent to the lamp door.
1 Turn off the projector and unplug the power cable.
2 Wait 60 minutes to allow the projector to cool thoroughly.
WARNING: To avoid burns, allow the projector to cool for at least 60
minutes before you clean or replace the dust filter.
3 Turn the projector upside down and remove the lamp door. See page 23.
4 Remove the dust filter door.
5 Clean the filter using a vacuum set on low
power.
6 Replace the dust filter door and the lamp door.
7 Vacuum the non-removable metal grid filter
adjacent to the lamp door.
Using the security lock
The projector has a security lock for use with
a cable lock system. Refer to the information
that came with the lock for instructions on
how to use it.