how-to-change-a-compressor-on-a-refrigerator

How To Change A Compressor On A Refrigerator

The compressor is one of the most important parts of a refrigerator. It is responsible for compressing the refrigerant and circulating it through the evaporator and condenser coils, creating the cooling effect inside the fridge. Without a functioning compressor, your refrigerator will not keep your food cold and fresh.

However, compressors can wear out or fail over time, due to various reasons such as age, power surges, overheating, or mechanical damage. When this happens, you may notice some symptoms such as:

  • The refrigerator is not cooling properly or at all
  • The refrigerator is making loud or unusual noises
  • The refrigerator is tripping the circuit breaker or blowing fuses
  • The refrigerator is leaking refrigerant or oil

If you suspect that your compressor is faulty, you need to replace it as soon as possible to avoid further damage to your refrigerator or your food. Replacing a compressor is not an easy task, and it requires some technical skills and tools. It is also a potentially dangerous job, as it involves working with high voltage electricity and pressurized refrigerant. Therefore, it is highly recommended that you hire a professional technician to do it for you.

However, if you are confident in your abilities and want to save some money, you can try to change the compressor on your refrigerator yourself. In this post, we will guide you through the steps of changing a compressor on a refrigerator, as well as the costs and benefits of doing so.

To change a compressor on a refrigerator, you need to:

  • Unplug the refrigerator and disconnect the water supply (if applicable)
  • Remove the back panel and access the compressor
  • Discharge the refrigerant and disconnect the electrical wires
  • Unscrew and remove the old compressor
  • Install the new compressor and reconnect the wires
  • Recharge the refrigerant and test the refrigerator
  • Replace the back panel and restore the power and water supply

Step 1: Unplug the refrigerator and disconnect the water supply (if applicable)

The first step of changing a compressor on a refrigerator is to unplug the refrigerator from the power outlet and disconnect the water supply (if your refrigerator has a water dispenser or an ice maker). This will prevent any electrical shocks or water leaks during the process.

To unplug the refrigerator, simply pull out the power cord from the wall socket. To disconnect the water supply, locate the water valve behind or under your refrigerator and turn it off. Then, disconnect the water line from the valve using a wrench.

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Step 2: Remove the back panel and access the compressor

The next step of changing a compressor on a refrigerator is to remove the back panel of your refrigerator and access the compressor. The back panel is usually secured by screws that you can remove with a screwdriver. Once you remove the back panel, you will see the compressor at the bottom of your refrigerator. It is a black metal cylinder with copper tubes and electrical wires attached to it.

Step 3: Discharge the refrigerant and disconnect the electrical wires

The third step of changing a compressor on a refrigerator is to discharge the refrigerant and disconnect the electrical wires from the old compressor. The refrigerant is a chemical substance that circulates through the coils and absorbs heat from inside the fridge. It is under high pressure and can be harmful if released into the air or in contact with your skin or eyes. Therefore, you need to discharge it safely using a recovery machine or a piercing valve.

To discharge the refrigerant, you need to attach one end of a recovery hose to the recovery machine or piercing valve and another end to one of the copper tubes of the compressor. Then, turn on the recovery machine or open the piercing valve and let the refrigerant flow out of the compressor and into the recovery tank. You may need to repeat this process for both the high-pressure and low-pressure sides of the compressor.

To disconnect the electrical wires, you need to locate the terminal box on the side of the compressor and remove its cover. Then, use a pair of needle-nose pliers to disconnect the wires from the terminals. Make sure to label or mark the wires so you can reconnect them correctly later.

Refrigerator Compressor | Part Number 2521C-A7256 | Sears PartsDirect

Step 4: Unscrew and remove the old compressor

The fourth step of changing a compressor on a refrigerator is to unscrew and remove the old compressor from the refrigerator. The compressor is usually mounted on a metal bracket or base that is secured by bolts or screws. You need to use a socket wrench or an adjustable wrench to loosen and remove these fasteners. Then, carefully lift and pull out the old compressor from the refrigerator. You may need to use a pry bar or a hammer to loosen it if it is stuck.

Step 5: Install the new compressor and reconnect the wires

The fifth step of changing a compressor on a refrigerator is to install the new compressor and reconnect the wires. The new compressor should be compatible with your refrigerator model and have the same specifications as the old one. You can check the manufacturer’s manual or contact a professional for guidance.

To install the new compressor, you need to reverse the steps of removing the old one. Place the new compressor on the bracket or base and align it with the holes. Then, secure it with the bolts or screws using a socket wrench or an adjustable wrench. Next, reconnect the electrical wires to the terminals according to their labels or marks. Finally, replace the terminal box cover.

Step 6: Recharge the refrigerant and test the refrigerator

The sixth step of changing a compressor on a refrigerator is to recharge the refrigerant and test the refrigerator. The refrigerant is essential for cooling your refrigerator and needs to be refilled after replacing the compressor. You need to use a vacuum pump and a manifold gauge set to evacuate any air or moisture from the system and then inject new refrigerant into it.

To recharge the refrigerant, you need to attach one end of a vacuum hose to the vacuum pump and another end to one of the ports of the manifold gauge set. Then, attach another vacuum hose to the other port of the manifold gauge set and to one of the copper tubes of the compressor. Next, turn on the vacuum pump and open the valves on the manifold gauge set to create a vacuum in the system. Let the vacuum run for about 15 minutes or until the gauge reads zero.

To inject new refrigerant, you need to attach one end of a charging hose to the refrigerant tank and another end to the middle port of the manifold gauge set. Then, turn off the vacuum pump and close the valves on the manifold gauge set. Next, open the valve on the refrigerant tank and slowly open the valve on the manifold gauge set that is connected to the compressor. Let the refrigerant flow into the system until it reaches the desired pressure level. You can check the manufacturer’s manual or a pressure-temperature chart for guidance.

To test the refrigerator, you need to detach all the hoses and tools from the compressor and replace any caps or plugs that you removed. Then, plug in the refrigerator and turn it on. Check if the compressor is running smoothly and quietly and if the refrigerator is cooling properly. If everything works well, you have successfully changed your compressor. If not, you may need to troubleshoot or call a professional for help.

Step 7: Replace the back panel and restore the power and water supply

The final step of changing a compressor on a refrigerator is to replace the back panel and restore the power and water supply. The back panel is important for protecting the compressor and other components from dust and damage. You need to align it with the holes on the back of your refrigerator and secure it with screws using a screwdriver.

To restore the power and water supply, you need to plug in your refrigerator to the power outlet and reconnect your water line to the water valve using a wrench. Then, turn on your water valve and check for any leaks or drips. If everything is fine, you have completed changing your compressor.

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Conclusion

Changing a compressor on a refrigerator is a challenging but rewarding task that can save you money and extend your refrigerator’s lifespan. However, it is not a job for everyone, as it requires some technical skills and tools, as well as safety precautions. If you are not confident or comfortable with doing it yourself, you should hire a professional technician to do it for you.

The cost of changing a compressor on a refrigerator can vary depending on several factors, such as:

  • The type and model of your refrigerator
  • The type and model of your compressor
  • The availability and quality of parts
  • The labor fees and charges of your technician
  • The warranty and guarantee of your service

On average, changing a compressor on a refrigerator can cost between $300 and $600, including parts and labor. This is cheaper than buying a new refrigerator, which can cost between $800 and $2000 or more. However, if your refrigerator is old or has other problems besides the compressor, it may be more economical to replace it than to repair it.

We hope this post has helped you learn how to change a compressor on a refrigerator or decide whether to do it yourself or hire a professional. If you have any questions or comments, feel free to leave them below.

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