There are two filters in the horizontal duct. The following procedure should be done every 600K.

  1. Remove the rear cover. (Rear Cover)
  2. There are two exhaust filters in the horizontal duct.
  3. You need one clean filter.
  4. Remove the cover of the left filter, remove the filter, and then discard it. (x1).
  5. Remove the cover of the right filter, and then remove the filter. (x1).
  6. Take the filter you just removed from the right slot, and then insert it into the empty left slot [A].
  7. Insert the new filter into the right slot [B].
  8. Re-attach both filter covers (x2).