Carrier 48FC M20 Series Service And Maintenance Instructions page 14

Support (Field-Supplied)
Top Panel
Fig. 18 — Top Panel Removal
4. Remove the compressor access panel to access the lower coil
clips. The condenser coil corner post may also be removed.
See Fig. 18.
5. Remove the screws from both sides of the 4 coil retaining
clips on the hairpin end of the coil tube sheets. See Fig. 19.
6. Remove the 4 retaining clips.
Fig. 19 — Condenser Coil Clips
7. Draw the inner coil inward to separate the coils for cleaning.
8. Insert a spacer (field-supplied) between the tube sheets to
hold the coils apart. See Fig. 20.
Corner Post
Compressor
Access Panel
Corner Post
14
9. Clean the outer coil surface to remove surface loaded
fibers or dirt. See "Remove Surface Loaded Fibers" on
page 13 for details.
10. Use a water hose or other suitable equipment to flush down
between the 2 coil sections to remove dirt and debris. If a
coil cleaner is used be sure to rinse the coils completely
before reassembly.
11. Move the inner coil back into position. Reinstall the 4 coil
clips. Reinstall the top panel and replace all screws.
Replace the compressor access panel.
Fig. 20 — Separating Coil Sections
(Top View)
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in reduced unit
performance or unit shutdown.
High velocity water from a pressure washer or garden hose,
or compressed air should never be used to clean a coil. The
force of the water or air jet will bend the fin edges and in-
crease airside pressure drop.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in accelerated cor-
rosion of unit parts.
Harsh chemicals, household bleach or acid or basic clean-
ers should not be used to clean outdoor or indoor coils of
any kind. These cleaners can be very difficult to rinse out of
the coil and can accelerate corrosion at the fin/tube inter-
face where dissimilar materials are in contact. If there is
dirt below the surface of the coil, use the Totaline environ-
mentally balanced coil cleaner.