Carrier 38AUQ appendix Routine System Maintenance, Service, Refrigeration System, Compressor Oil

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ROUTINE SYSTEM MAINTENANCE

These items should be part of a routine maintenance program, to be checked every month or two, until a specific schedule for each can be identified for this installation:

Quarterly Inspection

(and 30 days after initial start)

Indoor section

•Coil cleanliness checked.

•Return air filter replacement

•Belt tension checked

•Belt condition checked

•Pulley alignment checked

•Fan shaft bearing locking collar tightness checked

•Condensate drain checked

•Blower motor amperage

Outdoor Section

•Fan motor mounting bolts tightness

•Compressor mounting bolts

•Fan blade positioning

•Control box cleanliness and wiring condition

•Wire terminal tightness

•Refrigerant charge level

Economizer or Outside Air Damper

•Inlet filters condition

•Check damper travel (economizer)

•Check gear and dampers for debris and dirt

SERVICE

Refrigeration System

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in damage to equipment.

This system uses Puron® refrigerant which has higher pressures than R-22 and other refrigerants. No other refrig- erant may be used in this system. Gage set, hoses, and re- covery system must be designed to handle Puron®. If you are unsure consult the equipment manufacturer.

Compressor Oil

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in damage to equipment.

The compressor in a Puron system uses a polyolester (POE) oil. This oil is extremely hygroscopic, meaning it absorbs water readily. POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC re- frigerants. Take all necessary precautions to avoid exposure of the oil to the atmosphere.

Servicing Systems on Roofs With Synthetic Materials — POE (polyolester) compressor lubricants are known to cause long term damage to some synthetic roofing materials. Exposure, even if immediately cleaned up, may cause embrittlement (leading to cracking) to occur in one year or more. When performing any service which may risk expo- sure of compressor oil to the roof, take appropriate precautions to protect roofing. Procedures which risk oil leakage include but are not limited to compressor replacement, repairing refrig- erants leaks, replacing refrigerant components such as filter drier, pressure switch, metering device, coil, accumulator, or reversing valve.

SYNTHETIC ROOF PRECAUTIONARY PROCEDURE

1.Cover extended roof working area with an impermeable polyethylene (plastic) drop cloth or tarp. Cover an ap- proximate 10 x 10 ft (3.3 x 3.3 m) area.

2.Cover area in front of the unit service panel with a terry cloth shop towel to absorb lubricant spills and prevent run-offs, and protect drop cloth from tears caused by tools or components.

3.Place terry cloth shop towel inside unit immediately un- der component(s) to be serviced and prevent lubricant run-offs through the louvered openings in the base pan.

4.Perform required service.

5.Remove and dispose of any oil contaminated material per local codes.

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Contents Contents Safety ConsiderationsInstallation Installation GuidelineReplacement /Retrofit R22 to Puron 38AUQ*07-12 Unit Dimensions Pressurestat Settings psig High Cutout Operating Charge, Typical lb†Shipping Charge lb Qty...TypeOperating Weight kg Aluminum-Fin Coils Pressurestat Settings kPa High CutoutNominal Capacity kW Operating Charge, Typical kg†Service Options Model TypeType of Coil Refrigerant OptionsInstallation Puron-duty Filter Driers 38AUQ*07-12 Piping Recommendations Single-Circuit UnitMaximum Vertical Separation Refrigerant Specialties Part Numbers Insulation for Vapor Line Exposed To Outdoor ConditionsComplete Electrical Connections Install AccessoriesField Power Supply Units Without Factory-Installed Disconnect Units with Factory-Installed DisconnectConvenience Outlets All unitsInstalling Weatherproof Cover Convenience Outlet LocationField Control Wiring ThermostatElectrical Data 38AUQ*07-12 Hz Units PRE-START-UP START-UPAdvanced Scroll Temperature Protection Astp Adjust Refrigerant ChargeStart Unit Final Checks38AUQ*07 Charging Chart 38AUQ Wiring Diagram 208/230-3-60 shown Operating Sequence Base Unit ControlsRoutine System Maintenance ServiceQuarterly Inspection 30 days after initial start Refrigeration SystemField Refrigerant Access Ports Refrigerant System Pressure Access PortsLiquid Line Filter Drier Outdoor Coil Metering DevicesHeat Pump Controls Compressor ProtectionCrankcase Heater Commercial Defrost ControlDip Switch Position DefrostReversing valve control Compressor controlDefrost Speedup Functions Indoor Fan Off DelayDefrost Thermostats Fans Service Valves 38AUQ*08 Exterior 38AUQ*12 Exterior Comfort Alert Diagnostic Module InputLED Status Codes LockoutOutdoor Coil Maintenance and Cleaning Recommendation Periodic Clean Water RinseRoutine Cleaning of Indoor Coil Surfaces LubricationTorque Values Service PartsFastener Torque Values Troubleshooting Appendix a Appendix BAppendix C Catalog No 38AUQ-01SIPreliminary Information CUT Along Dotted Linecut Along Dotted Line

38AUQ specifications

The Carrier 38AUQ is a versatile and efficient air conditioning unit designed to meet a variety of residential and light commercial cooling needs. Known for its advanced technology and robust performance, the 38AUQ model showcases Carrier's commitment to sustainability and energy efficiency.

One of the standout features of the Carrier 38AUQ is its use of variable-speed inverter technology. This allows the unit to adjust its cooling output in response to the temperature demands of the environment. By operating at multiple speed levels, it minimizes energy consumption and maximizes comfort, ensuring a consistent, quiet cooling experience.

The 38AUQ is equipped with a high-efficiency compressor, which helps to further enhance its energy performance. This component plays a critical role in ensuring that the unit operates smoothly, reducing both electricity bills and the environmental impact. Efficiency ratings often exceed industry standards, making the 38AUQ a suitable choice for those looking to reduce their carbon footprint while enjoying a comfortable indoor climate.

In terms of design, the Carrier 38AUQ boasts a compact and sleek profile that allows for easy installation in a variety of settings. Its durable construction is built to withstand harsh weather conditions, ensuring longevity and reliability. Additionally, an advanced air purification system is integrated, featuring filters that capture airborne particles, improving indoor air quality.

The unit also offers a range of smart features, including compatibility with smart home systems. Users can remotely control their air conditioning via smartphone apps, allowing for customizable settings and energy management from anywhere. This connectivity aligns with modern living preferences, enhancing convenience and control.

Furthermore, the Carrier 38AUQ is designed with noise reduction in mind. The advanced sound-absorbing materials and quiet operation of its fan and compressor make it one of the quieter air conditioning options on the market. This is particularly beneficial for residential applications, where noise can be a significant concern.

Overall, the Carrier 38AUQ combines cutting-edge technology, energy efficiency, and user-friendly features, making it a top choice for both homeowners and small business operators seeking reliable cooling solutions. Its commitment to performance and efficiency makes it a standout model in the Carrier air conditioning lineup.
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