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Recommended Condenser Coil Maintenance and
Cleaning
Routine cleaning of coil surfaces is essential to maintain proper
operation of the unit. Elimination of contamination and removal of
harmful residues will greatly increase the life of the coil and ex-
tend the life of the unit. The following maintenance and cleaning
procedures are recommended as part of the routine maintenance
activities to extend the life of the coil.
REMOVE SURFACE LOADED FIBERS
Surface loaded fibers or dirt should be removed with a vacuum
cleaner. If a vacuum cleaner is not available, a soft non-metallic
bristle brush may be used. In either case, the tool should be ap-
plied in the direction of the fins. Coil surfaces can be easily dam-
aged (fin edges can be easily bent over and damage to the coating
of a protected coil) if the tool is applied across the fins.
NOTE: Use of a water stream, such as a garden hose, against a
surface loaded coil will drive the fibers and dirt into the coil. This
will make cleaning efforts more difficult. Surface loaded fibers
must be completely removed prior to using low-velocity clean wa-
ter rinse.
PERIODIC CLEAN WATER RINSE
A periodic clean water rinse is very beneficial for coils that are ap-
plied in coastal or industrial environments. However, it is very im-
portant that the water rinse is made with a very low-velocity water
stream to avoid damaging the fin edges. Monthly cleaning as de-
scribed below is recommended.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution can result in reduced unit perfor-
mance or unit shutdown.
Use only the recommended approved cleaning procedures for
proper system performance.
ROUTINE CLEANING OF COIL SURFACES
Periodic cleaning with Totaline
cleaner is essential to extend the life of coils. This cleaner is avail-
able from Replacement Components Division as P/N: P902-0301
for a one gallon (3.8L) container, and P902-0305 for a 5 gallon
(18.9L) container. It is recommended that all coils, including stan-
dard aluminum, pre-coated, copper/copper or e-coated coils be
cleaned with the Totaline environmentally sound coil cleaner as
described below.
Coil cleaning should be part of the unit's regularly scheduled
maintenance procedures to ensure long life of the coil. Failure to
clean the coils may result in reduced durability in the environment.
Avoid use of:
•
coil brighteners
•
acid cleaning prior to painting
•
high pressure washers
•
poor quality water for cleaning
Totaline environmentally sound coil cleaner is a nonflammable,
hypo-allergenic, non bacterial, USDA accepted biodegradable
agent that will not harm the coil or surrounding components such
as electrical wiring, painted metal surfaces, or insulation. Use of
environmentally sound coil
®
non-recommended coil cleaners is strongly discouraged since coil
and unit durability could be affected.
Two-Row Coils
Clean coil as follows:
1.
Turn off unit power and tag the disconnect.
2.
Remove the top panel screws on the condenser end of the
unit.
3.
Remove the condenser coil corner post. See Fig. 11.
4.
Lift and hold the top cover open.
5.
Hold the top pan open by placing the coil corner post
between the top panel and center post. See Fig. 12.
6.
Remove the screws securing the coil to the compressor
plate and compressor access panel.
7.
Remove the fasteners holding the coil sections together at
the return end of the condenser coil. Carefully separate the
outer coil section 3 to 4-in. from the inner coil section. See
Fig. 13.
8.
Clean the outer surfaces with a stiff brush in the normal
manner. Use a water hose or other suitable equipment to
flush down between the 2 coil sections to remove dirt and
debris.
9.
Secure the inner and outer coil rows together with a field-
supplied fastener.
10. Reposition the outer coil section and remove the coil cor-
ner post from between the top panel and center post. Rein-
stall the coil corner post and access panel.
11. Replace all screws.
Fig. 11 — Cleaning Condenser Coil
Fig. 12 — Propping up Top Panel
8
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