United Technologies Carrier Weathermaker 48A2, Управление, пуск, эксплуатация, обслуживание и устранение неисправностей.

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Routine Cleaning of Coil Surfaces — Monthly cleaning with
Totaline ® environmentally balanced coil cleaner is essential to
extend the life of coils. This cleaner is available from Carrier
Replacement parts 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 copper
tube aluminum fin, pre-coated fin, copper fin, or e-coated coils
be cleaned with the Totaline environmentally balanced 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 re-
duced durability in the environment.
Avoid the use of:
• coil brighteners
• acid cleaning prior to painting
• high pressure washers
• poor quality water for cleaning
Totaline environmentally balanced coil cleaner is non-flam-
mable, hypoallergenic, nonbacterial, 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 strong-
ly discouraged since coil and unit durability could be affected.
Totaline Environmentally Balanced Coil Cleaner Application
Equipment
• 2 1 /
2
gallon garden sprayer
• water rinse with low velocity spray nozzle
Totaline Environmentally Balanced Coil Cleaner Application
Instructions
1. Remove any foreign objects or debris attached to the coil
face or trapped within the mounting frame and brackets.
2. Put on personal protective equipment including safety
glasses and/or face shield, waterproof clothing and
gloves. It is recommended to use full coverage clothing.
3. Remove all surface loaded fibers and dirt with a vacuum
cleaner as described above.
4. Thoroughly wet finned surfaces with clean water and a
low velocity garden hose, being careful not to bend fins.
5. Mix Totaline environmentally balanced coil cleaner in a
2 1 /
2
gallon garden sprayer according to the instructions
included with the cleaner. The optimum solution tem-
perature is 100 F.
NOTE: Do NOT USE water in excess of 130 F, as the enzy-
matic activity will be destroyed.
6. Thoroughly apply Totaline environmentally balanced coil
cleaner solution to all coil surfaces including 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.
Reapplying cleaner as needed to ensure 10-minute satura-
tion is achieved.
12. Thoroughly rinse all surfaces with low velocity clean wa-
ter using downward rinsing motion of water spray nozzle.
Protect fins from damage from the spray nozzle.
NOTES:
1. Torque set screws on blower
wheel to 70 in. lb ± 2 in. lb.
2. Torque set screw on propeller
fan to 15 in. lb ± 2 in. lb.
3. Dimensions are in inches.
Fig. 43 — Typical Gas Heating Section
A48-3822
CAUTION
Harsh chemicals, household bleach or acid or basic clean-
ers 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 inter-
face where dissimilar materials are in contact. If there is
dirt below the surface of the coil, use the Totaline environ-
mentally balanced coil cleaner as described above.
CAUTION
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. Reduced unit performance
or nuisance unit shutdown may occur.