Carrier 38AUQ 25 Series Installation, Start-Up And Service Instructions Manual page 31

Avoid the use of:
• coil brighteners
• acid cleaning prior to painting
• high pressure washers
• poor quality water for cleaning
Totaline environmentally sound coil cleaner is nonflammable,
hypoallergenic, non bacterial, and a USDA accepted biodegrad-
able 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.
Totaline Environmentally Sound Coil Cleaner Application
Equipment:
• 2-1/2 gallon garden sprayer
• Water rinse with low velocity spray nozzle
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in corrosion and dam-
age to the unit.
Harsh chemicals, household bleach or acid or basic cleaners
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 interface where dissim-
ilar materials are in contact. If there is dirt below the surface of
the coil, use the Totaline environmentally sound coil cleaner as
described above.
CAUTION
UNIT RELIABILTY HAZARD
Failure to follow this caution may result in reduced unit perfor-
mance
High velocity water from a pressure washer, 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 increase
airside pressure drop.
Totaline Environmentally Sound Coil Cleaner Application
Instructions:
NOTE: Proper eye protection such as safety glasses is recom-
mended during mixing and application.
1. Turn off unit power.
2. Remove screws holding rear corner post and top cover in
place. Pivot top cover up 12 to 18 inches (305 to 457 mm)
and support with a rigid support. See Fig. 29.
Top
Cover
Fig. 29 — Pivot and Support Top Cover
3. Remove all surface loaded fibers and dirt 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 sur-
face loaded coil will drive the fibers and dirt into the coil, making
cleaning efforts more difficult. Surface loaded fibers must be com-
pletely removed prior to using low velocity clean water rinse.
4. Using a low velocity garden hose thoroughly wet finned sur-
faces with clean water. Be careful not to bend the fins.
5. Mix Totaline environmentally sound coil cleaner in a
2-1/2 gallon garden sprayer according to the instructions
included with the cleaner. The optimum solution temperature
is 100°F (38°C).
NOTE: Do NOT USE water in excess of 130°F (54°C), as the en-
zymatic activity will be destroyed.
6. Thoroughly apply Totaline environmentally sound coil
cleaner solution to all coil surfaces including the finned area,
tube sheets and coil headers.
7. Hold garden sprayer nozzle close to finned areas and apply
cleaner with a vertical, up-and-down motion. Avoid spraying
in horizontal pattern to minimize potential for fin damage.
8. Ensure cleaner thoroughly penetrates deep into finned areas.
9. Interior and exterior finned areas must be thoroughly cleaned.
10. Finned surfaces should remain wet with cleaning solution for
10 minutes.
11. Ensure surfaces are not allowed to dry before rinsing. Reap-
ply cleaner as needed to ensure 10-minute saturation is
achieved.
12. Thoroughly rinse all surfaces with low velocity clean water
using downward rinsing motion of water spray nozzle. Pro-
tect fins from damage from the spray nozzle.
13. Replace top cover and rear corner posts.
31
Rigid
Support