Carrier 42CT Series Manual page 21

21
7.7. Air Filter
Take off the filter from the bottom or rear under the front panel or bottom.
Unit with rear plenum
Unit with bottom plenum
Clean standart nylon filters with vacuum cleaner or water and soap solution.
Rinse and allow them to dry before re-installation.
Optional filters can be vacuum cleaned. Replace it every 6 months, shorten the
period if necessary.