Carrier 48TC 04 Series, Service And Maintenance Instructions

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11
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death.
Using a high pressure washer (900 psig -- 6205 kPa)
to clean coils can cause severe injury or death if
spray is aimed at service personnel. Do not use a
high pressure washer to clean hands and do not direct
spray in direction of eyes or other tissue.
!
WARNING
Round Tube Plate Fin (RTPF) Condenser Coil
The condenser coil is fabricated with round tube copper
hairpins and plate fins of various materials and/or coatings
The coil can be one--row or composite--type two--row.
Composite two--row coils are two single--row coils
fabricated with a single return bend end tubesheet.
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 extend 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 can 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
R
,
environmentally sound
coil cleaner, is essential to extend the life of coils. This
cleaner is available from Carrier Replacement
Components Division as part number P902--0301 for a one
gallon container, and part number P902--0305 for a 5
gallon 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 can result in reduced
durability in the environment.
Avoid use of:
S
coil brighteners
S
acid cleaning prior to painting
S
high pressure washers
S
poor quality water for cleaning
Totaline environmentally sound coil cleaner is
nonflammable, hypo allergenic, non bacterial, and a
USDA accepted biodegradable agent that will not harm
the coil or surrounding 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.
One--Row Coil (A04 -- A07, B04 only)
Wash coil with commercial coil cleaner. It is not
necessary to remove top panel.
Two--Row and Three--Row Coils (D08 -- D16)
Clean coil as follows:
1. Turn off unit power, tag disconnect.
2. Remove top panel screws on condenser end of unit.
3. Remove condenser coil corner post. See Fig. 15. To
hold top panel open, place coil corner post between
top panel and center post. See Fig. 16.
C08205
Fig. 15 -- Cleaning Condenser Coil
48TC