Carrier WeatherMaker 50KCQ A04 Series Service And Maintenance Instructions page 9

4. Remove screws securing coil to compressor plate and
compressor access panel.
5. 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.
6. Secure inner and outer coil rows together with a field-sup-
plied fastener.
7. 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 replace all screws.
TOTALINE ENVIRONMENTALLY
CLEANER APPLICATION EQUIPMENT:
• 2.5 gal (9.5L) garden sprayer
• Water rinse with low velocity spray nozzle
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution can result in corrosion and damage
to the unit.
Harsh chemicals, household bleach, 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
dissimilar materials are in contact. If there is dirt below the
surface of the coil, use the Totaline Environmentally Sound Coil
Cleaner as described below.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution can result in reduced unit
performance.
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
CLEANER APPLICATION INSTRUCTIONS:
1. Proper protection equipment, such as approved safety
glasses and gloves, is recommended during mixing and
application of Totaline Environmentally Sound Coil
Cleaner.
2. Remove all surface loaded fibers and debris using a vac-
uum cleaner or a soft non-metallic bristle brush as
described above.
3. Thoroughly wet all finned surfaces with clean water using
a low velocity garden hose, being careful not to bend fins.
4.
NOTE: Do NOT USE water in excess of 130°F (54°C), as the en-
zymatic activity will be destroyed.
5.
6.
SOUND COIL
7.
8.
9.
10. Ensure surfaces are not allowed to dry before rinsing.
11. Thoroughly rinse all surfaces with low velocity clean
CLEANING THE INDOOR COIL:
1.
2.
3.
4.
5.
6.
7.
8.
REFRIGERATION SYSTEM COMPONENTS:
Each heat pump refrigeration system includes a compressor,
SOUND COIL
accumulator, reversing valve, dual-function outdoor coil with
vapor header check valve, cooling liquid line with a filter drier
and a check valve, dual-function indoor coil with a vapor head-
er check valve, and heating liquid line with a check valve and a
strainer. Unit sizes A04-06 have a single compressor-circuit.
See Fig. 14 for typical unit piping schematic. Dual-function
outdoor and indoor coils are designed to provide parallel coil
circuits during evaporator-function operation and converging
coil circuits during the condenser-function operation.
1. Molex is a registered trademark of Molex, Inc.
9
Mix Totaline Environmentally Sound Coil Cleaner in a
2.5 gal (9.5L) garden sprayer according to the instructions
included with the cleaner. The optimum solution tempera-
ture is 100°F (38°C).
Thoroughly apply Totaline Environmentally Sound Coil
Cleaner solution to all coil surfaces including finned area,
tube sheets and coil headers.
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.
Ensure cleaner thoroughly penetrates deep into finned
areas.
Interior and exterior finned areas must be thoroughly
cleaned.
Finned surfaces should remain wet with cleaning solution
for 10 minutes.
Reapply cleaner as needed to ensure 10-minute saturation
is achieved.
water using downward rinsing motion of water spray noz-
zle. Protect fins from damage from the spray nozzle.
Turn unit power off. Use proper lockout/tag-out procedures.
Remove indoor coil access panel.
If economizer or two-position damper is installed, remove
economizer by disconnecting the Molex
ing mounting screws.
Slide filters out of unit.
Clean coil using a commercial coil cleaner or dishwasher
detergent in a pressurized spray canister. Wash both sides
of coil and flush with clean water. For best results, back-
flush toward return-air section to remove foreign material.
Flush condensate pan after completion.
Re-install economizer and filters.
Reconnect wiring.
Replace access panels.
plug and remov-
1