Goodman Mfg R-410A manual 17A Resistance Test, 17B Ground Test, Testing Compressor Windings

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SERVICING

If the compressor terminal PROTECTIVE COVER and gasket (if required) is not properly in place and secured, there is a remote possibility if a terminal vents, that the vaporous and liquid discharge can be ignited, spouting flames several feet, causing potentially severe or fatal injury to anyone in its path. This discharge can be ignited external to the compressor if the terminal cover is not properly in place and if the discharge impinges on a sufficient heat source.

Ignition of the discharge can also occur at the venting terminal or inside the compressor, if there is sufficient contaminant air present in the system and an electrical arc occurs as the ter- minal vents.

Ignition cannot occur at the venting terminal without the pres- ence of contaminant air, and cannot occur externally from the venting terminal without the presence of an external ignition source.

Therefore, proper evacuation of a hermetic system is essen- tial at the time of manufacture and during servicing.

To reduce the possibility of external ignition, all open flame, electrical power, and other heat sources should be extinguished or turned off prior to servicing a system.

If the following test indicates shorted, grounded or open wind- ings, see procedure S-19 for the next steps to be taken.

S-17A RESISTANCE TEST

Each compressor is equipped with an internal overload.

The line break internal overload senses both motor amperage and winding temperature. High motor temperature or amper- age heats the disc causing it to open, breaking the common circuit within the compressor on single phase units. The three phase internal overload will open all three legs.

Heat generated within the compressor shell, usually due to recycling of the motor, high amperage or insufficient gas to cool the motor, is slow to dissipate, allow at least three to four hours for it to cool and reset, then retest.

2.Using an ohmmeter, test continuity between terminals S- R, C-R, and C-S, on single phase units or terminals T1, T2 and T3, on 3 phase units.

 

 

C

OHMMETER

S

R

 

 

COMP

TESTING COMPRESSOR WINDINGS

If either winding does not test continuous, replace the com- pressor.

NOTE: If an open compressor is indicated allow ample time for the internal overload to reset before replacing compressor.

S-17B GROUND TEST

If fuse, circuit breaker, ground fault protective device, etc., has tripped, this is a strong indication that an electrical problem exists and must be found and corrected. The circuit protective device rating must be checked and its maximum rating should coincide with that marked on the equipment nameplate.

With the terminal protective cover in place, it is acceptable to replace the fuse or reset the circuit breaker ONE TIME ONLY to see if it was just a nuisance opening. If it opens again, DO NOT continue to reset.

Disconnect all power to unit, making sure that all power legs are open.

1.DO NOT remove protective terminal cover. Disconnect the three leads going to the compressor terminals at the near- est point to the compressor.

WARNING

1. Remove the leads from the compressor terminals.

SEE WARNINGS S-17 BEFORE REMOVING COMPRES- SOR TERMINAL COVER.

DAMAGE CAN OCCUR TO THE GLASS EMBEDDED TERMINALS IF THE LEADS ARE NOT PROPERLY REMOVED. THIS CAN RESULT IN TERMINAL AND HOT OIL DISCHARGING.

HI-POT

COMPRESSOR GROUND TEST

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Contents Service Instructions Servicing Scheduled MaintenanceProduct Design System Operation16B Checking Fan & Blower Motor ECM Motors Wiring DiagramsImportant Information Recognize Safety SYMBOLS, Words and LabelsSafe Refrigerant Handling Product Identification Part Number Description Fits Models AccessoriesRequires 1 filter Filter Size 16 x 25 xMeasurement in inches MOTORIZED/MANUAL Fresh AIR Dampers Downflow Applications ACCESSORIES*PH1524-60M4Model Model Return SupplyEconomizer GPH13MED103 PGC101/102/103 46 1/4 39 3/8 14 1/2 12 1/2 x 15 x 22 1/2 Roof CurbsLocation & Clearances Product DesignIndoor Blower Motor CompressorsLine Voltage Wiring Electrical WiringCooling Cycle System OperationCooling Heating CycleDefrost Cycle Airflow Adjustments for Indoor Blower MotorFAN Operation CFM Delivery Thermostat Fan Only ModeCFM Trim Adjust Thermostat WiringTypical Heat Pump System in Heating Typical Heat Pump System in CoolingOnce a Month Scheduled MaintenanceOnce a Year Servicing Cooling /HEAT PUMP- Service Analysis GuideLine Voltage NOW Present Checking VoltageIndoor Blower Motor Checking Wiring3B Cooling Anticipator 3C Heating AnticipatorChecking Contactor Contacts Single PhaseThree Phase Checking Transformer and Control CircuitChecking High Pressure Control Checking Loss of Charge ProtectorChecking Capacitor RELAY, Start 15A Resistance Check15B Capacitance Check AmmeterAPH15 M Series Only Checking MotorsChart on Next Chart from Previous GE X13TM Motor Connections 16D Checking GE X13TM MotorsChecking Compressor Windings GPH15 M Series OnlyCompressor Ground Test Testing Compressor Windings17A Resistance Test 17B Ground TestUnloader Test Procedure 17C Unloader Test Procedure17D Operation Test Checking Reversing Valve and Solenoid Testing Crankcase HeaterTesting Defrost Control Testing Defrost ThermostatBrazing Materials Leak Testing Nitrogen or NITROGEN-TRACEDRefrigeration Repair Practice EvacuationAn inaccurately charged system will cause future prob- lems ChargingTXV Valves Final Charge AdjustmentChecking Compressor Efficiency Thermostatic Expansion ValveSuperheat Superheat and Subcooling Adjustment on TXV ApplicationsOverfeeding UnderfeedingHeat Pump Heating Cycle Checking SubcoolingTwo Speed Application *PH1548**-*PH1560 Subcooling = SAT. Liquid TEMP. Liquid Line TempPressure vs. Temperature Chart 410A Required Liquid Line Temperature NON-CONDENSABLES Checking Expansion Valve OperationChecking Restricted Liquid Line Refrigerant OverchargeSuction Line Drier Clean-Up Method Reversing Valve ReplacementTotal External Static Checking Temperature RiseChecking Temperature Rise Checking External Static PressureOT18-60A Outdoor Thermostat Wiring DiagramsRoom Thermostat PH15**M4 Single Phase HKR** Heat KITGPH13MED Economizer for *PH15**M4 Diagrams
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R-410A specifications

Goodman Manufacturing, a well-respected name in the HVAC industry, has made significant advancements with their R-410A refrigerant technology. R-410A, a hydrofluorocarbon (HFC), has positioned itself as a superior alternative to the older R-22 refrigerant, which has been phased out due to its ozone-depleting properties. Goodman’s commitment to energy efficiency and environmental sustainability is well reflected in their use of R-410A in their air conditioning and heat pump systems.

One of the main features of Goodman’s R-410A systems is their exceptional energy efficiency. The R-410A refrigerant operates at a higher pressure than R-22, which allows for better heat transfer and improved cooling capacity. This results in reduced energy consumption and lower utility bills for consumers. Goodman’s air conditioning units designed for use with R-410A are often rated with high Seasonal Energy Efficiency Ratio (SEER) ratings, making them an eco-friendly choice for residential and commercial applications.

Another notable technology employed by Goodman is their commitment to reliable performance through advanced compressor designs. Goodman's scroll compressors are optimized for R-410A, ensuring quieter operation and reducing vibration levels. These compressors are known for their efficiency and longevity, making them a favorite among homeowners seeking dependable and durable climate control solutions.

Goodman's multi-stage cooling systems that utilize R-410A offer precise temperature control and enhanced comfort. By controlling the speed of the compressor, Goodman’s units can adjust output according to the heating or cooling demand, maximizing comfort while minimizing energy waste. This adaptability not only enhances indoor air quality but also contributes to a greener environment by using less energy.

Furthermore, Goodman incorporates high-tech diagnostic controls into their systems. These controls provide real-time performance data, allowing homeowners and technicians to monitor system status and troubleshoot issues more easily. By using R-410A combined with these innovative technologies, Goodman emphasizes reliability and user-friendly operation.

In conclusion, Goodman Manufacturing’s use of R-410A refrigerant reflects their dedication to efficiency, reliability, and environmental stewardship in HVAC solutions. The combination of advanced compressor technologies, high energy efficiency, and innovative controls solidifies Goodman’s reputation as a leader in the industry, offering homeowners and businesses the comfort and peace of mind they deserve.