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Outdoor Fans —

Each fan is supported by a formed-

wire mount bolted to the fan deck and covered with a wire
guard. The exposed end of the motor shaft is covered with
a rubber boot. In case a fan motor must be repaired or re-
placed, be sure the rubber boot is put back on when the fan
is reinstalled and be sure the fan guard is in place before
starting the unit. Figure 14 shows the proper position of the
mounted fan. Fan motors have permanently lubricated
bearings.

Lubrication

FAN MOTORS have sealed bearings. No provisions are made
for lubrication.

COMPRESSOR has its own oil supply. Loss of oil due to a
leak in the system should be the only reason for adding oil
after the system has been in operation. See Oil Charge
section.

Cleaning Coils —

The coils can be cleaned with a vacuum

cleaner, washed out with water, blown out with low-pressure
compressed air, or brushed (do not use wire brush). Fan mo-
tors are drip-proof but not waterproof.

Clean outdoor coil annually or as required by location or

outdoor air conditions. Inspect coil monthly, and clean as
required. Fins are not continuous through coil sections; dirt
and debris may pass through first section, become trapped
between the 2 rows of fins (38AE012) or 3 rows of fins

(38AE014,016, 38AKS024) and restrict outdoor airflow. Use
a flashlight to determine if dirt or debris has collected be-
tween coil sections. Clean coil as follows:
1. Turn off unit power.
2. Remove screws holding rear corner posts and top

cover in place. Pivot top cover up 12 to 18 in. (305 to
457 mm) and support with a rigid support. See Fig. 15.

3. Remove clips securing tube sheets together at the return

bend end of the coil. Carefully spread the ends of the coil
rows apart by moving the outer sections. See Fig. 16.

4. Using a water hose, or other suitable equipment, flush down

between the sections of coil to remove dirt and debris.

5. Clean the remaining surfaces in the normal manner.
6. Reposition outer coil sections.
7. Reinstall clips which secure tube sheets.
8. Replace top cover and rear corner posts.

38AE012,014,016

38AKS024

Fig. 14 — Outdoor Fan

Fig. 15 — Pivot and Support Top Cover

Fig. 16 — Coil Cleaning (Typical)

14

Summary of Contents for 38AE012

Page 1: ...ety glasses and work gloves Keep quenching cloth and fire extinguisher nearby when brazing Use care in handling rigging and setting bulky equipment ELECTRIC SHOCK HAZARD Separate power sources main an...

Page 2: ...8AE012 13 8 in 35 38AE014 016 15 8 in 41 38AKS024 C 7 8 in 22 2 diameter knockout for control power D 2 in 50 8 diameter knockout for unit power NOTES 1 SERVICE AREAS Allow 3 ft 914 on both sides and...

Page 3: ...Compressor 2 No 1 Fan 6 Terminal Block 1 Unit Power 10 Low Pressure Switch 3 High Pressure Switch 7 Terminal Block 2 Control Power 11 Hot Gas Bypass Piping Stub 3 8 in ODM 4 Circuit Breakers 8 Wraparo...

Page 4: ...temperatures of 125 F for 38AE012 123 F for 38AE014 and 130 F for 38AE016 and 38AKS024 Table 1B Physical Data SI 60 Hz UNIT 38AE012 38AE014 38AE016 38AKS024 OPERATING WEIGHT kg 333 354 359 408 REFRIG...

Page 5: ...emperatures of 125 F for 38AE012 123 F for 38AE014 and 130 F for 38AE016 and 38AKS024 Table 1D Physical Data SI 50 Hz UNIT 38AE012 38AE014 38AE016 38AKS024 OPERATING WEIGHT kg 333 354 359 408 REFRIGER...

Page 6: ...and also refer to Part 3 of Carrier System Design Manual for design details and line sizing Refer to indoor installation instructions for addi tional information Table 3 Liquid Line Data UNIT MAXIMUM...

Page 7: ...ugh piping while brazing to prevent formation of copper oxide Install field supplied thermostatic expansion valve s in in door section If 2 thermostatic expansion valves are installed for 2 step cooli...

Page 8: ...80 50 20 0 74 38AE014 803 230 198 264 51 0 149 75 35 7 143 2 2 9 3 5 1 20 903 400 342 457 34 0 89 50 22 1 83 38AE016 803 230 198 264 66 9 206 100 47 9 200 2 2 9 3 5 1 20 903 400 342 457 43 0 121 60 2...

Page 9: ...ctrical power source must agree with unit nameplate rating 5 All service valves must be open 6 Crankcase heater must be firmly locked into the com pressor crankcase START UP To Start Unit Set thermost...

Page 10: ...Fig 9 38AE012 and 38AKS024 Charging Chart 10...

Page 11: ...Fig 10 38AE014 Charging Chart 11...

Page 12: ...Fig 11 38AE016 Charging Chart 12...

Page 13: ...ers and provides capacity control Un loaders are factory set see Tables 1A 1D but can be field adjusted as described in the 2 following sections CONTROL SET POINT cylinder load point is adjustable fro...

Page 14: ...r as required by location or outdoor air conditions Inspect coil monthly and clean as required Fins are not continuous through coil sections dirt and debris may pass through first section become trapp...

Page 15: ...rvice literature Contactor Closed 1 Compressor leads loose 1 Check connections 2 Motor windings open 2 See compressor service literature 3 Single phasing 3 Check for blown fuse Check for loose connect...

Page 16: ...control 3 Air in system 3 Purge and evacuate system 4 Partially plugged expansion valve or filter drier 4 Clean or replace SYSTEM IS NOISY 1 Piping vibration 1 Support piping as required 2 Compressor...

Page 17: ......

Page 18: ...l programs include a video cassette and or slides and a companion booklet Use these for self teaching or to conduct full training sessions For a free Service Training Material Catalog STM call 1 800 9...

Page 19: ...ONFIRM PROPER DRAINAGE Y N ARE PROPER AIR FILTERS IN PLACE Y N HAVE FAN AND MOTOR PULLEYS BEEN CHECKED FOR PROPER ALIGNMENT Y N DO THE FAN BELTS HAVE PROPER TENSION Y N HAS CORRECT FAN ROTATION BEEN C...

Page 20: ...R DB dry bulb TEMP EVAP ENTERING AIR WB wet bulb TEMP EVAP LEAVING AIR DB TEMP EVAP LEAVING AIR WB TEMP COMPRESSOR AMPS L1 L2 L3 CHECK THE COMPRESSOR OIL LEVEL SIGHT GLASSES ARE THE SIGHT GLASSES SHOW...

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