Dirt Devil DD9002 Instruction Manual page 9

4. After cleaning, be sure to dry the dust cup and filter cover system
before loading into the machine.
5. Install the filter hype in the direction shown
6. Install the filter system into the dust cap and then install the dust
cup on the host machine as shown below (note the slot position).
The upper hand of the filter is placed in the
dust cup against the gap
The rib protruding here on the main machine is
put into a groove in the dust cup