Carrier 38AUD*12 Series, Инструкция по установке, запуску и обслуживанию, Страница: 73 / 80

33
Totaline Environmentally Sound Coil Cleaner
Application Equipment
S
2
1
/
2
gallon garden sprayer
S
water rinse with low velocity spray nozzle
UNIT DAMAGE HAZARD
Failure to follow this caution may result in corrosion
and damage to the unit.
Harsh chemicals, household bleach or acid or basic
cleaners should not be used to clean outdoor or indoor
coils or 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 above.
CAUTION
!
UNIT RELIABILITY HAZARD
Failure to follow this caution may 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.
CAUTION
!
Totaline Environmentally Sound Coil Cleaner
Application Instructions
NOTE
: Proper eye protection such as safety glasses is
recommended 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 305 to 457 mm (12 to 18
in.) and support with a rigid support. See Fig. 27.
3. Remove all surface loaded fibers and dirt with a vacu-
um 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 surface loaded coil will drive the fibers and dirt
into the coil, making cleaning efforts more difficult.
Surface loaded fibers must be completely removed prior
to using low velocity clean water rinse.
4. Using a low velocity garden hose thoroughly wet
finned surfaces 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 instruc-
tions included with the cleaner. The optimum solution
temperature is 38
°
C (100
°
F).
NOTE : Do NOT USE water in excess of 54
°
C (130
°
F),
as the enzymatic 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 po-
tential 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.
Reapply cleaner as needed to ensure 10-minute satur-
ation is achieved.
12. Thoroughly rinse all surfaces with low velocity clean
water using downward rinsing motion of water spray
nozzle. Protect fins from damage from the spray
nozzle.
13. Replace top cover and rear corner posts.
FASTENER TORQUE VALUES
Table 11 – Torque Values
Compressor mounting bolts 734–847 N–cm (120---168 in–lbs)
Condenser fan motor mounting bolts 226
±
23 N–cm (20
±
2 in–lbs)
Condenser fan hub setscrew 949
±
136 N–cm (84
±
2 in–lbs)
High-flow service port 1085
±
23 N–cm (96
±
10 in–lbs)
Schrader-type service check valve 23–34 N–cm (2–3 in–lbs)
Compressor oil sightglass thread 3730
±
340 N---cm (330
±
31 in–lbs)
38A
U
D