9
Totaline Environmentally Sound Coil Cleaner Application
Instructions
1. Proper eye protection such as safety glasses, gloves and
protective clothing are recommended during mixing and
application.
2. Remove all surface loaded fibers and dirt with a vacuum
cleaner as described above.
3. Thoroughly wet finned surfaces with clean water and a
low velocity garden hose, being careful not to bend fins.
4. Mix Totaline environmentally sound coil cleaner in a
2
1
/
2
gallon (9.6L) garden sprayer according to the instruc-
tions 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.
5. Thoroughly apply Totaline environmentally sound coil
cleaner solution to all coil surfaces including finned area,
tube sheets and coil headers.
6. Hold garden sprayer nozzle close to finned areas and apply
cleaner with a vertical, up-and-down motion.
7. Avoid spraying in horizontal pattern minimizing the
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.
Reapply 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 noz-
zle. Protect fins from damage from the spray nozzle.
Evaporator Coil Metering Devices
The metering devices are multiple fixed-bore devices (Acutrol™)
sweated into the horizontal outlet tubes from the liquid header, lo-
cated at the entrance to each evaporator coil circuit path. The me-
tering devices are non-adjustable. Service requires replacing the
entire liquid header assembly.
To check for possible blockage of one or more of these metering
devices, disconnect the supply fan contactor (IFC) coil, then start
the compressor and observe the frosting pattern on the face of the
evaporator coil.
A frost pattern should develop uniformly across the face of the
coil starting at each horizontal header tube. Failure to develop
frost at an outlet tube can indicate a plugged or a missing orifice.
Refrigerant System Pressure Access Ports
There are two access ports in the system - on the suction tube near
the compressor and on the discharge tube near the compressor.
These are brass fittings with black plastic caps. The hose connec-
tion fittings are standard
1
/
4
-in. SAE male flare couplings.
The brass fittings are two-piece High Flow valves, with a recep-
tacle base brazed to the tubing and an integral spring-closed
check valve core screwed into the base. See Fig. 13. This
Schrader valve is permanently assembled into the core body and
cannot be serviced separately; replace the entire core body if
necessary. Service tools are available from RCD (P920-0010)
that allow the replacement of the Schrader valve core without
having to recover the entire system refrigerant charge. Apply
compressor refrigerant oil to the Schrader valve core’s bottom
O-ring. Install the fitting body with 96 ± 10 in.-lb (10.85 ±
1.13Nm) of torque; do not over-tighten.
NOTE: The High Flow valve has a black plastic cap with a rubber
O-ring located inside the cap. This rubber O-ring must be in place
in the cap to prevent refrigerant leaks.
EXAMPLE:
Model 581J*28
Circuit A (from Fig. 14):
Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . .85°F (29°C)
Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . 125 psig (860 kPa)
Suction Temperature should be . . . . . . . . . . . . . . . . . .63°F (17°C)
Circuit B (from Fig. 14):
Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . .85°F (29°C)
Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . 120 psig (830 kPa)
Suction Temperature should be . . . . . . . . . . . . . . . . . .58°F (14°C)
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in accelerated
corrosion of unit parts.
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
dissimilar materials are in contact. If there is dirt below the
surface of the coil, use the environmentally balanced coil
cleaner.
CAUTION
PERSONAL INJURY HAZARD
Failure to follow this caution can result in severe personal inju-
ry and 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 air-
side pressure drop.
High velocity water from a pressure washer can cause severe
injury upon contact with exposed bodily tissue. Always direct
the water stream away from the body.
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