The 003-002722-01 Filter is an easily replaceable filter specifically designed for the LW650 and LW720 3-LCD WXGA projectors. The projector clocks the time a filter is used and notifies the user when it is time for it to be changed, with the option menu keeping an up-to-date account of the filter's usage time. By resetting the filter time when it has been cleaned or replaced, the air filter will continue to give an accurate indication of the hours used.
The filter is to be replaced when it is damaged or soiled. The projector may display such messages as "CHECK THE AIR FLOW" or turn off the projector. Then, the filter should be either cleaned or replaced.