Carrier 38AE - Manual (Page 8)

Cleaning Coils — The coils can be cleaned with a vac­
uum cleaner, washed out with water, blown out with com­
pressed air, or brushed (do not use wire brush). Fan motors
are drip-proof but not waterproof.
Clean outdoor coil annually or as required by location or
outdoor air conditions. Inspect coil monthly, and clean as
required. Fins are not continuous through coil sections; dirt
and debris may pass through first section, become trapped
between the 2 rows of fins (38AE012) or 3 rows of fins
(38AE014, 016) and restrict outdoor airflow. Use a flash­
light to determine if dirt or debris has collected between
coil sections. Clean coil as follows:
1. Turn off unit power.
2. Remove screws holding rear comer posts and top cover
in place. Pivot top cover up 12 to 18 in. (305 to 457
mm) and support with a rigid support. See Fig. 10.
3. Remove clips securing tube sheets together at the return
bend end of the coil. Carefully spread the ends of the
coil rows apart by moving the outer sections. See
Fig. 11.
4. Using a water hose, or other suitable equipment, flush
down between the sections of coil to remove dirt and
debris.
5. Clean the remaining surfaces in the normal manner.
6. Reposition outer coil sections.
7. Reinstall clips which secure tube sheets.
8. Replace top cover and rear comer posts.
RIGID
SUPPORT
Fig. 10 — Pivot and Support Top Cover