Carrier 38AKS013-024 specifications Compressor Protection, Lubrication

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Winter Start Control (If Required) Ð Install Ac- cessory Package 38AE900021.

Crankcase Heater Ð The heater prevents refrigerant migration and compressor oil dilution during shutdown when- ever compressor is not operating. It is wired to cycle with the compressor; the heater is off when compressor is run- ning, and on when compressor is off.

Both compressor service valves must be closed whenever the crankcase heater is deenergized for more than 6 hours. The crankcase heater is operable as long as the control cir- cuit is energized.

Compressor Protection

CIRCUIT BREAKER Ð Calibrated trip manual reset, am- bient compensated, magnetic breaker protects against motor overload and locked rotor conditions.

COMPRESSOR OVERTEMPERATURE PROTECTION (IP)

ÐA thermostat installed on compressor motor winding reacts to excessively high winding temperatures and shuts off the compressor.

TIME GUARD II CONTROL Ð Control prevents com- pressor from short cycling. See Operating Sequence.

CRANKCASE HEATER Ð Heater minimizes absorption of liquid refrigerant by oil in crankcase during brief or ex- tended shutdown periods. The control circuit is maintained if compressor fan motor circuit breakers are turned off. The main disconnect must be on to energize crankcase heater.

IMPORTANT: Never open any switch or disconnect that energizes the crankcase heater unless unit is being serviced or is to be shut down for a prolonged period. After a prolonged shutdown on a service job, energize the crankcase heater for 24 hours before starting the compressor.

High-Pressure Switches Ð Switches have ®xed, nonadjustable settings. Switches are mounted on the compressors.

Low-Pressure Switches Ð Switches have ®xed, nonadjustable settings. Switches are mounted on the compressors.

TO CHECK Ð Slowly close liquid shutoff valve and allow compressor to pump down. Do not allow compressor pump-down below 2 psig (13.8 kPa). Compressor should shut down when suction pressure drops to cutout pressure in Tables 1A-1D, and should restart when pressure builds up to cut-in pressure shown.

Outdoor Fans Ð 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 15 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 Preliminary Oil Charge section.

Cleaning Coils Ð The coils can be cleaned with a vacuum cleaner, washed out with low velocity water, blown out with low-pressure compressed air, or brushed (do not use wire brush). Fan motors are drip-proof but not waterproof. Do NOT use acid cleaners.

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 ®rst section, become trapped between the 2 rows of ®ns (38AKS013) or 3 rows of ®ns (38AKS014-024) and restrict outdoor air¯ow. Use a ¯ash- light to determine if dirt or debris has collected between 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. 16.

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. 17.

4.Using a water hose, or other suitable equipment, ¯ush 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.

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Contents Contents Safety ConsiderationsInstallation Dimensions Component Locations Typical Ð Physical Data English, 60 Hz Ð Physical Data SI, 60 Hz OIL Charge L Condenser FansÐ Physical Data English, 50 Hz Ð Physical Data SI, 50 Hz Complete Refrigerant Piping Connections Weight DistributionRig and Mount the Unit Liquid Line DataLength of Interconnecting Piping FT M Length of Interconnecting PIPING, FT MLength of Interconnecting PIPING, FT M Cond Ð Refrigerant Piping Sizes Ð 60 Hz UnitsLocation of Sight Glasses Filter Driers LLSV2 Ð NECIFC Unit ComprÐ Electrical Data 3 Ph/50 Hz PRE-START-UPSystem Check MCA ICFAdjust Refrigerant Charge START-UPPreliminary Checks 38AKS013 and 38AKS024 Charging Chart 38AKS014 Charging Chart 38AKS016 Charging Chart Service Operating SequenceCompressor Protection LubricationOutdoor Fan Compressor Stops on HIGH-PRESSURE Switch TroubleshootingProblem Solution Compressor does not RUN Compressor Cycles on LOW-PRESSURE SwitchTroubleshooting Copyright 1998 Carrier Corporation START-UP Checklist Preliminary InformationPre-Start-Up Start-Up

38AKS013-024 specifications

The Carrier 38AKS013-024 is a prominent series of packaged air conditioning units designed to achieve optimal performance across various applications. Engineered with advanced technologies, these units are ideal for both residential and light commercial spaces, offering reliable climate control in a compact design.

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In terms of characteristics, the Carrier 38AKS013-024 offers a range of cooling capacities, making it suitable for various space sizes and applications. The lightweight design facilitates easy installation, while the low noise levels ensure minimal disruption in residential settings. These units also come with environmentally friendly refrigerants, aligning with modern sustainability goals.

Carrier's commitment to quality and performance is evident in the 38AKS series. With their combination of innovative technology, energy efficiency, and robust construction, the Carrier 38AKS013-024 units represent an excellent choice for those seeking a reliable and efficient air conditioning solution. Whether for home or light commercial use, these units promise consistent comfort and satisfaction.
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