Unplug the air purifier from the electrical outlet.
Dampen a soft cloth with warm water and wipe down the outside of the air purifier. Do not soak the cloth or use chemical cleaning agents.
Remove the two screws from the back cover an pull it off of the air purifier. Remove the two screws holing the lint screen in place and lift the lint screen off of the machine.
Vacuum the lint screen with a brush attachment on a vacuum cleaner to remove heavy dirt. If any dirt remains, wash the lint screen in hot water and lightly scrub the screen with a toothbrush. Let the screen dry before placing it back in the air filter.
Grip the purification plate in the middle of the machine and lift it out of the holder. Wipe down the plate with a mixture of ammonia and water and allow it to dry completely. When dry, reinsert the plate in the holder.
Reattach the lint screen and the back cover and plug the air purifier back into the electrical outlet to restart operation.