NEC M350X User Manual page 123

1. Remove the filter, and then clean the filter unit and the filter cover.
2. Attach new filters.
Filter unit: Attach two honeycomb filters (coarse mesh) to the filter unit.
Filter cover: Attach two accordion filters (fine mesh) to the filter cover.
The accordion filter has slits on it. Align these slits with the protrusions of the filter cover.
Align the filter unit with the filter cover and push the protrusions into place.
Insert two catches of the tip of the filter unit into the groove of the cabinet.
1. From the menu, select [RESET]
2. Select [CLEAR FILTER HOURS].and reset the filter usage hours. (
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[CLEAR LAMP HOURS] and reset the lamp usage hours.
7. Maintenance
page 91)