10
Totaline Environmentally Sound Coil Cleaner Application
Instructions
1. Proper protection such as safety glasses, gloves and pro
-
tective 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
gal
-
lon (9.6 L) 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.
5. Thoroughly apply Totaline environmentally sound coil
cleaner solution to all coil surfaces, including finned area,
tube sheets and coil headers.
6. Hold the garden sprayer nozzle close to finned areas and
apply cleaner with a vertical, up-and-down motion.
7. Avoid spraying in a horizontal pattern to minimize potential
for fin damage.
8. Make sure the cleaner thoroughly penetrates deep into the
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. Make sure 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 a downward rinsing motion of the spray nozzle. Protect
fins from damage from the spray nozzle.
EVAPORATOR COIL METERING DEVICES
The metering devices are multiple fixed-bore devices (Acutrol)
swedged into the horizontal outlet tubes from the liquid header, lo
-
cated at the entrance to each evaporator coil circuit path. These 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 miss
-
ing 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 re
-
ceptacle base brazed to the tubing and an integral spring-closed
check valve core screwed into the base (see Fig. 15). This
schrader valve is permanently assembled into this core body
and cannot be serviced separately; replace the entire core body
if necessary. Service tools are available from RCD (P/N 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 ± 1.13 Nm) of torque; do not overtighten.
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 50TC*D28
Circuit A (from Fig. 15)
Outdoor Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . 85°F (29°C)
Suction Pressure. . . . . . . . . . . . . . . . . . . . . . . . .125 psig (860 kPa)
Suction Temperature should be . . . . . . . . . . . . . . . . . . 63°F (17°C)
Circuit B (from Fig. 15)
Outdoor Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . 85°F (29°C)
Suction Pressure. . . . . . . . . . . . . . . . . . . . . . . . .120 psig (830 kPa)
Suction Temperature should be . . . . . . . . . . . . . . . . . . 58°F (14°C)
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.
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.
Summary of Contents for WeatherMaker 50TC 17-30 Series
Page 34: ...34 Fig 48 RTU Open Overlay for Economizer Wiring ...
Page 35: ...35 Fig 49 VFD Overlay for W2770 Controller Wiring ...
Page 80: ...80 Fig C 50TC 17 28 Control Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 81: ...81 Fig D 50TC 30 Control Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 82: ...82 Fig E 50TC 30 Control Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 83: ...83 Fig F 50TC 17 30 Power Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 84: ...84 Fig G 50TC 17 30 Power Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 89: ...89 Fig L 50TC PremierLink System Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 90: ...90 Fig M 50TC RTU Open Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 91: ...91 Fig N 50TC SAV VFD System Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 93: ......
