Bryant R-22 service manual Compressor Removal and Replacement, System Clean-Up After Burnout

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Compressor Removal and Replacement

Once it is determined that compressor has failed and the reason established, compressor must be replaced.

!CAUTION

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal injury.

Turn off all power to unit before proceeding. Wear safety glasses, protective clothing, and gloves when handling refrigerant. Acids formed as a result of motor burnout can cause burns.

!CAUTION

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal injury.

Wear safety glasses, protective clothing, and gloves when handling refrigerant and when using brazing torch..

1.Shut off all power to unit.

2.Remove and recover all refrigerant from system until pressure gauges read 0 psi. Use all service ports. Never open a system under a vacuum to atmosphere. Break vacuum with dry nitrogen holding charge first. Do not exceed 5 psig.

3.Disconnect electrical leads from compressor. Disconnect or remove crankcase heater and remove compressor hold-down bolts.

4.Cut compressor from system with tubing cutter. Do not use brazing torch for compressor removal. Oil vapor may ignite when compressor is disconnected.

5.Scratch matching marks on stubs in old compressor. Make corresponding marks on replacement compressor.

6.Use torch to remove stubs from old compressor and to reinstall them in replacement compressor.

7.Use copper couplings to tie compressor back into system.

8.Replace filter drier, evacuate system, recharge, and check for normal system operation.

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Do not leave system open to atmosphere. Compressor oil is highly susceptible to moisture absorption.

System Clean-Up After Burnout

Some compressor electrical failures can cause motor to burn. When this occurs, by-products of burn, which include sludge, carbon, and acids, contaminate system. Test the oil for acidity using POE oil acid test to determine burnout severity. If burnout is severe enough, system must be cleaned before replacement compressor is installed. The 2 types of motor burnout are classified as mild or severe.

In mild burnout, there is little or no detectable odor. Compressor oil is clear or slightly discolored. An acid test of compressor oil will be negative. This type of failure is treated the same as mechanical failure. Liquid-line strainer should be removed and liquid-line filter drier replaced.

In a severe burnout, there is a strong, pungent, rotten egg odor. Compressor oil is very dark. Evidence of burning may be present in tubing connected to compressor. An acid test of compressor oil will be positive. Follow these additional steps:

1.TXV must be cleaned or replaced.

2.Drain any trapped oil from accumulator if used.

3.Remove and discard liquid-line strainer and filter drier.

4.After system is reassembled, install liquid and suction-line Puronr filter driers.

NOTE: On heat pumps, install suction line drier between compressor and accumulator.

5.Operate system for 10 hr. Monitor pressure drop across drier. If pressure drop exceeds 3 psig replace suction-line and liquid-line filter driers. Be sure to purge system with dry nitrogen when replacing filter driers. If suction line driers must be replaced, retest pressure drop after additional 10 hours (run time). Continue to monitor pressure drop across suction line filter drier. After 10 hr of run time, remove suction-line filter drier and replace liquid-line filter drier. Never leave suction-line filter drier in system longer than 72 hr (run time).

6.Charge system. (See unit information plate.)

!CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

Only suction line filter driers should be used for refrigerant and oil clean up. Use of non-approved products could limit system life and void unit warranty.

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Contents Table of Contents Application GuidelineTable of Contents TWO Stage NON-COMMUNICATING TWO Stage CommunicatingAIR Conditioner and Heat Pump Model Number Nomenclature Serial Number NomenclatureIntroduction Safety ConsiderationsInstallation Guideline Required Field-Installed Accessories for Heat Pumps AccessoriesRequired Field-Installed Accessories for Air Conditioners Accessory Descriptions Base / Mid-Tier / Deluxe 4-sided Baffle Assembly LOW-AMBIENT Cooling GuidelineDeluxe 3-sided Baffle Assembly and Dimensions Basic Cabinet Designs Cabinet AssemblyLong Line Guideline Access Compressor Or Other Internal Cabinet Components Legacy RNC and Legacy Line Control Box Identification Labeling Figure LabelsAluminum Wire ElectricalContactor CapacitorCycle Protector Time-Delay RelayCrankcase Heater Pressure Switches Personal Injury HazardDefrost Thermostat Defrost Control BoardTroubleshooting HK32EA001 If outdoor unit will not run Defrost SpeedupIf defrost thermostat is stuck closed If defrost thermostat is stuck openFive-Minute Compressor Delay Quiet ShiftCooling HeatingTroubleshooting HK32EA003 Fan MotorCompressor Plug Low-Voltage TerminalsCompressor Failures Mechanical FailuresLocked Rotor Runs, Does Not PumpNoisy Compressor Split Post Grommet part number KA75UG100Unit Personal Injury Hazard Single-Phase MotorsElectrical Failures Compressor Oil Refrigeration SystemRefrigerant Synthetic Roof Precautionary Procedure Servicing Systems on Roofs With Synthetic MaterialsBrazing Oil ChargingPersonal Injury and Unit Damage Hazard Service Valves and PumpdownPumpdown Procedure Heating Piston AccuRaterr Heat Pumps Only AccuRaterr Components Used in R-22 Heat PumpsReversing Valve Reversing Valve Heating Mode, Solenoid De-EnergizedSuction Line Filter Drier Install Liquid-line Filter Drier Indoor ACLiquid Line Filter Drier Accumulator AccumulatorInstall TXV Thermostatic Expansion Valve TXVTXV Operation Unit Operation HazardMake Piping Connections Replacing TXV on an Indoor Coil pre-2006Replacing TXV on Indoor Coil post-2006 Personal Injury and Environmental HazardRefrigeration System Repair Leak DetectionCoil Removal Fire HazardCompressor Removal and Replacement System Clean-Up After BurnoutDeep Vacuum Method Check ChargeEvacuation Troubleshooting with Superheat Basic DiagnosticsLow Superheat with Normal or Low Suction Pressure Low Superheat with High Suction PressurePseudo Evaporator Superheat Instructions High Superheat with Normal or High Suction PressureHunting Superheat Puron System Suction Pressure Drop Example22 System Suction Pressure Drop PuronrRefrigerant Pressure Temperature Chart Psig22 Refrigerant Pressure Temperature Relationship PsigPuron Subcooling Chart Liquid Line Temperature F Liq Press Subcooling F PsigPuron Superheat Chart Superheat F Psig22 Subcooling Chart Liquid Line Temperature F PT F Subcooling F Pres Psig22 Superheat Chart TWO-STAGE Application GuidelinesModel Plug Model Plug InformationGeneral Information Low Ambient CoolingDefrost Airflow Selection for 315AAV/355AAV FurnacesLiquid-Line Solenoid Accessory Defrost HoldForced Defrost All 286A units must be charged in high stage onlyOne Minute Stage Change Time Delay on 286ANA/187ANA Models Cooling and Heating OperationUtility Interface With Evolution Control Compressor Operation on 286ANA/187ANA ModelsECM Fan Motor Troubleshooting Outdoor Fan Motor OperationThermistors Time DelaysMuffler, Accumulator, Reversing Valve RVS Control BOX Troubleshooting 230V Line Power Disconnect Detection 230v Brown-Out Protection DefeatedCompressor Voltage Sensing Contactor Shorted DetectionUnloader Test Procedure Temperature ThermistorsFailed Thermistor Default Operation Thermistor Sensor ComparisonTroubleshooting Status CodesEdge Thermidistat Models T6-PRH-01 or T6-NRH-01 TWO-STAGE 286B/289B/180B/187B General Information Heating Check Chart Procedure All 286B units must be charged in high stage onlyCompressor Operation on 289B/180B Models Low Stage High Stage Low & High Model Incoming Power Troubleshooting 187B & 286B Start CircuitControl Box Contactor And CapacitorTroubleshooting HK38EA015 circuit board 286B Models Compressor Thermal Cutout 289B Compressor Thermal CutoutOutdoor Coil Thermistor OCT Attachment Status Codes Single Stage Furnace with 2-Stage Air Conditioner TWO Stage NON-COMMUNICATING 127A/226A Operating AmbientAirflow Selections ECM Furnaces Airflow Selection for FV4C Fan Coils non-communicatingDefrost Speedup System Function and Sequence of OperationCompressor Operation Check Charge Indoor Thermostat Control Options TWO Stage Communicating 167A/266AAirflow Selections for ECM Furnaces non communicating Evolution Controlled Low Ambient Cooling Defrost HoldMajor Components For Evolution Control only, Green communications Comm Light Communication and Status Function LightsOutdoor Fan Motor Operation 2230V Brown-Out Protection Defeated No 230V at Compressor Contactor Thermistor CurveOutdoor Coil Thermistor OCT Attachment 167A / 266A Troubleshooting Status CodesCare and Maintenance Final Check-Out Puronr R-410A Refrigerant Quick Reference GuideAIR Conditioner Troubleshooting Chart Heat Pump Troubleshooting Heating Cycle Heat Pump Troubleshooting Cooling Cycle Index of Tables Description Table #TWO-STAGE 286A/288A 180A/187A TWO-STAGE 286B/288B 180B/187BCatalog No. SM01---6
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R-22 specifications

The Bryant R-22 stands out in the landscape of residential heating and cooling systems with its combination of efficiency, durability, and modern technology. Designed primarily for homeowners seeking comfortable climate control solutions, the R-22 model delivers consistent performance throughout varying seasonal extremes.

One of the main features of the Bryant R-22 is its high energy efficiency. Rated with a SEER (Seasonal Energy Efficiency Ratio) that meets or exceeds industry standards, this air conditioning unit is designed to reduce energy consumption while providing optimal cooling. This not only helps in lowering monthly utility bills but also promotes environmentally responsible usage.

Another notable characteristic is the unit's durability. Constructed with a robust cabinet and high-quality components, the R-22 is built to withstand the rigors of daily use, with protective features that enhance its longevity. The cabinet comes with a powder-coated finish that resists corrosion and harsh weather conditions, ensuring that the unit stays functional and aesthetically pleasing for years.

The Bryant R-22 also incorporates advanced technology to improve user experience. One such innovation is the SmartSet technology, which allows homeowners to program their unit to optimize comfort levels according to their specific needs. This programmable capability enhances energy savings and ensures that the home remains at the desired temperature when residents are present.

Moreover, the unit features a Quiet Operating System that significantly reduces noise levels, making it suitable for residential areas where noise might be a concern. The design minimizes vibrations and optimizes airflow, creating a comfortable environment without disruptive sounds.

For added convenience, the Bryant R-22 is compatible with various thermostat options, including Wi-Fi-enabled models. This allows users to control their home's climate from anywhere using a smartphone app, facilitating effortless adjustments and monitoring of energy usage.

Finally, the Bryant R-22 is backed by a solid warranty, providing peace of mind for homeowners. This commitment to quality and customer satisfaction is a testament to Bryant’s dedication to producing reliable and efficient HVAC solutions. Overall, the Bryant R-22 is an exemplary choice for those looking to enhance their home comfort with the latest in HVAC technology.
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