NEC NP-PA550W User Manual page 168

(2) Push the left edges of the filters and remove the two hard
honeycomb filters.
- The filters cannot be removed by pressing the left and
right edges.
4. Use a vacuum cleaner to vacuum all the dust inside.
Get rid of dust in the accordion filter
NOTE:
• Whenever you vacuum the filter, use the soft brush attachment to
vacuum. This is to avoid damage to the filter.
• Do not wash the filter with water. Doing so can result in filter clog-
ging.
5. Remove dust from the filter unit and the filter cover.
Clean both outside and inside.
6. Attach the four filters to the filter unit.
(1) Insert the hard honeycomb filters into the tips of the flanges
at the center, then bend the filters and push them in under
the hooks.
- The filters cannot be inserted from the outside.
(2) Turn the filter unit over.
Mount the accordion filters under the flanges along the outer
edges.
• Each accordion filter has slits in it. Align the slits with the
protrusions on the filter unit.
7. Mount the filter unit back onto the projector cabinet.
Insert the filter unit onto the projector with the sides on which
the left and right hooks are located on the outside.
Slit
Hook
156
7. Maintenance
Flange
Hook