Notes

How to Replace a Refrigerator Compressor
When the compressor becomes faulty, your fridge cannot operate correctly, and you also run the risk of having to throw food away.

So, if your refrigerator compressor has divided, it'll need to be replaced. However, before you replace the compressor, you need to weigh the price of replacing it with investing in a new refrigerator. Investing in a new refrigerator may be a better choice.

Replacing a compressor is a very difficult repair to create and involves welding. You should only attempt this repair when you are experienced and/or a professional technician. Additionally it is an extremely dangerous repair to handle, as it involves working with highly flammable gasses.

Here`s a step-by-step guide for how to replace the compressor.

Step One. Remove the Old Compressor
The first step is to remove the old compressor. To do that:

Turn the power off to the refrigerator and pull the plug out.
Remove each of the contents of one's fridge. Since replacing a compressor may take a long time, it would be best to place your meal into coolers.
Pull the fridge out from the wall so that you can access the trunk of it.
Take away the back panel of the fridge. To eliminate the panel, you just have to unthread the screws that hold it in place, and it should come off. Once removed, stick it out of the way.
Locate the compressor. It is at the back of the fridge on the bottom of it.
Disconnect the power cable, and remove the cover that protects the electrical components.
Remove the relay, the capacitor, and the overload protector.
Release the refrigerant by attaching a perforating valve onto the procedure tube and then releasing it. Make sure you have adequate ventilation.
Once released, you must connect a nitrogen cylinder onto the manifold and inject the gas at a pressure of 50 PSI.
Remove the manifold valve.
Sand the compressor tubes in the areas which have been soldered so that they are abrasive.
Cut the discharge and suction tubes (leave about 20-30 mm from the end of the process tube).
Remove the compressor.
Remove the filter. You should employ a soldering torch (use a neutral flame).
If the compressor motor burned out, you need to clean the tubes. That is done by welding on a tube connector to the suction line and charging a cylinder with about 500 ml of solvent. Afterward you attach the cylinder to the suction line and attach the end of the cylinder to the solvent cylinder. Put the end of the capillary right into a container to get the used solvent. It is possible to inject the solvent through the system. After that, you will need to give the system a nitrogen charge to drive out any residual solvent.
Step Two. Install the brand new Compressor
Now that you have removed the old compressor, the next thing is to install the new one. To achieve that:

Attach the new filter (be sure to have the correct one). You first have to solder a Schrader valve onto the excess connection (be sure you take the cap off before welding). Next, connect and weld the filter onto the condenser outlet. After that you can attach the filter to the capillary tube and weld it on.
Place the new compressor into the correct position.
Connect all of the tubes up to it, and weld them on.
You should then do a leak test by injecting nitrogen into them and utilizing a sniffer tool. If you don`t have a sniffer tool, it is possible to place soapy water onto them and appearance out for just about any bubbles that appear, as this indicates you will find a leak. Once tested, release the nitrogen.
Use a vacuum pump to remove air from the compressor.
Install the capacitor to the relay, accompanied by the overload protector, and then attach the relay to the compressor`s terminal.
Connect the cooling system wires to the relay and the overload protector terminals.
Now you can put the electrical components cover back on.

Fill refrigerators repair with refrigerant (be sure to have the correct volume).
Double-check that all of the wires and tubes are correctly positioned, and when so, your new compressor should now be successfully installed.
Step Three. Test That It Works
The final step would be to test your new compressor works. You can certainly do that by simply turning your refrigerator back on and testing to see if it's working. If not, you will have to contact a technician to take a look at it.

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