Carrier 48TC 17 Series, Service And Maintenance Instructions, Page: 9 / 96

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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 applied in the direction of the fins.
Coil surfaces can be easily damaged (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 water rinse.
Periodic Clean Water Rinse
A periodic clean water rinse is very beneficial for coils
that are applied in coastal or industrial environments.
However, it is very important that the water rinse is made
with a very low − velocity water stream to avoid damaging
the fin edges. Monthly cleaning as described below is
recommended.
Routine Cleaning of Coil Surfaces
Periodic cleaning with Totaline environmentally sound
coil cleaner is essential to extend the life of coils. This
cleaner is available from Carrier Replacement
Components Division as
p/n: P902- 0301 for one-gallon
(3.8L) container, and P902- 0305 for a 5-gallon (18.9L)
container
. It is recommended that all coils, including
standard 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 non-
flammable, hypo allergenic, non bacterial, USDA accept-
ed biodegradable agent that will not harm the coil or sur-
rounding components such as electrical wiring, painted
metal surfaces, or insulation. Use of 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. 12.
To hold the top panel open, place the coil corner post
between the top panel and center post. See Fig. 13.
C08205
Fig. 12 − Cleaning Condenser Coil
C08206
Fig. 13 − Propping Up Top Panel
4. Remove the screws securing the coil to the compres-
sor plate and compressor access panel.
5. Remove the fastener holding the coil sections togeth-
er at the return end of the condenser coil. Carefully
separate the outer coil section 3 to 4 in. from the in-
ner coil section. See Fig. 14.
C08207
Fig. 14 − Separating Coil Sections
6. Use a water hose or other suitable equipment to flush
down between the 2 coil sections to remove dirt and