How to charge gas in a refrigerator or refrigerator step by step fixed
Many times colleagues and friends have asked me to show in pictures a simple method of taxing gas in a domestic refrigeration system. Without preamble, we start with the gas load. To do this, we welded the discharge tube.
The upper tube is that which passes from the motor of the sensor to the filtering dryer, after the capillary. It is worth mentioning that we change the engine because this unit is already installed and it is enough to make the connections of the tubes (tube top and bottom).
We cut the high tube, that is the condenser tube or the rear grill of the refrigerator. It is called, because it is welded to the pressure outlet of the compressor. We extend it and condition it to match the high output of the compressor.
As the high outlet of the compressor is a finer tube (3/16), we introduce the pipe 3/16 into the 1/4 pipe of the condenser or grill. As I show in the image below.
As we have already introduced the condenser tube (1/4), into the compressor tube 3/16, finally welded, we end up with the discharge stage.
We continue with the bottom tube, it is the return tube that comes from the freezer or the evaporator, whatever the type of cold system, they all have the same principle.
We water and scrape off so that the silver welding handle without problem, proceed with the welding as indicated in the next two images.
In this picture below, we carefully look at the moment of welding, you will see that our torch is conditioned by a welding screen to concentrate the heat and not to burn the cables.
Finally, from our welds, we have the service tube, that's where we go into the gas, we cut it. Do not forget that the compressor has three tubes:
After welding all the tubes to the compressor, we seal the capillary tube that goes to the evaporator or freezer, not the service capillary, but the tube that moves to the freezer, the one that is connected after the filter the one charged with gas expansion in the system. We do it by hitting with a hammer on an iron or simply crushing with tongs, as shown in the photo. There is also the way we should stay.
With our torch, the condenser is heated. Uniformly and very hot, trying not to burn the bobbin or cables ... this process is done to remove moisture from the condenser. This is what we must do before starting the compressor of the refrigerator, Cosa, that at the time of the connection of the compressor, the moisture comes out of the interior.
As we heat our condenser, we connect the compressor to the electrical energy. See... It's the same compressor in the refrigerator, do not think we need another compressor. Lose care that will fail, what I do 21 years ago and I have never failed a compressor with this loading system. We call self-vacuum and can consult any technician on this method.
We set the ammeter to measure and control the current (0.7A under vacuum), then the air outlet through the condenser tube is blocked by the finger to feel if the air is emptied, because it 'sometimes touched that I made a bad weld and there is not when all the air came out, because the hole that did not weld came in.
Here is a summary:
Continuing with the gas load, we checked that our manometer had descended to -28.5 pounds of suction, indicating almost an absolute vacuum.
We put the hose on the manometer in the service section that would be in the middle of the manometer ... at the end of the yellow pipe, we put the gas tank in this case R134a, we purge and we are ready to put the gas.
In the image below, we have 2 tubes facing each other; the tube to the left is the thickness that comes from the condenser, this is where the system vacuum is made ... and the right tube is the capillary tube or extension tube that is in the freezer is the thin and the one that is sealed. At this point, I want you to pay attention and much attention.
At this point, it is when we "DISCONNECT THE ENGINE INTEGRATED", that is, we turn it off. Before opening the gauge slightly, the gas will enter slightly.
When the engine is off, cut the capillary tube or dilator as shown in the image.
Open the manometer to continue the gas, apply more or less 5 pounds of gas. We put the capillary in a sensitive part so that we can feel if we already circulate the gas throughout the system ... in doing so, we eliminate all the moisture from the system since the gas we put makes a high and a low , occupying 99% of the system.
Check the pressure gauge and, when it reaches 5 pounds, close the gauge. As we extinguish the compressor, we must do it as quickly as possible, but without despair, it is a matter of practice. I especially take 1 hour to charge gas in a refrigerator.
We put the filter and weld it by its 2 ends as indicated in the picture, try to leave no space so that the gas does not leak. We have to weld the filter when our manometer marks a maximum of 5 pounds, because suddenly, more pressure does not let them weld, it is very important, that is why we must constantly control our gauge.
We cool as much as we can our filter so that the moment the gas enters is properly dehumidified.
Before starting the engine, we may put gas for about 5 to 10 minutes depending on the criteria of each and how you learn.
The touch has a very important function, needs to get used to it to feel like it goes both up and down ... with the engine on gradually going to fill the load. several times the manometers, so do not think that the best way is to play as you go.
After completing the gas charge and checking that the bottom tube or return tube is not frozen, we proceed to seal the service tube of the small capillary which goes to the pressure gauge. place it vertically so that the time to do the welding point as a ball, in the picture will be able to appreciate better.
After 3 hours of work before sealing, the gauge was fine; in 2 lbs of pressure, the freezer with a uniform cold and the condenser warm almost all the tubes. I forgot to tell them this.
A very interesting topic on how to change the hose to a freezer or food preservative you have in the following video and includes the gas load to a horizontal freezer, with the same charging method as explained in this publication. This video is a complete 11-part question, how to solve a gas leak problem.
Many times colleagues and friends have asked me to show in pictures a simple method of taxing gas in a domestic refrigeration system. Without preamble, we start with the gas load. To do this, we welded the discharge tube.
The upper tube is that which passes from the motor of the sensor to the filtering dryer, after the capillary. It is worth mentioning that we change the engine because this unit is already installed and it is enough to make the connections of the tubes (tube top and bottom).
We cut the high tube, that is the condenser tube or the rear grill of the refrigerator. It is called, because it is welded to the pressure outlet of the compressor. We extend it and condition it to match the high output of the compressor.
As the high outlet of the compressor is a finer tube (3/16), we introduce the pipe 3/16 into the 1/4 pipe of the condenser or grill. As I show in the image below.
As we have already introduced the condenser tube (1/4), into the compressor tube 3/16, finally welded, we end up with the discharge stage.
We water and scrape off so that the silver welding handle without problem, proceed with the welding as indicated in the next two images.
Finally, from our welds, we have the service tube, that's where we go into the gas, we cut it. Do not forget that the compressor has three tubes:
- The compressor high pressure tube is mounted on the condenser or cooling grid.
- The compressor's low pressure tube is attached to the return tube from the freezer or evaporator.
- It had a compressor service, this tube is used to charge gas into the system.
Putting gas in a refrigerator
We put our manometer, because we have to weld a nut with a copper piece of a piece ... I use another system, I have only put in capillary service and I add in another post. I will try to explain how this home-made tool.
Here is a summary:
- welded the three tubes, top, bottom and service with the capillary.
- heat the condenser.
- the compressor is switched on.
- we measure the current.
- we verify that there is no escape.
- We hope the air is out.
In the image below, we have 2 tubes facing each other; the tube to the left is the thickness that comes from the condenser, this is where the system vacuum is made ... and the right tube is the capillary tube or extension tube that is in the freezer is the thin and the one that is sealed. At this point, I want you to pay attention and much attention.
At this point, it is when we "DISCONNECT THE ENGINE INTEGRATED", that is, we turn it off. Before opening the gauge slightly, the gas will enter slightly.
When the engine is off, cut the capillary tube or dilator as shown in the image.
Open the manometer to continue the gas, apply more or less 5 pounds of gas. We put the capillary in a sensitive part so that we can feel if we already circulate the gas throughout the system ... in doing so, we eliminate all the moisture from the system since the gas we put makes a high and a low , occupying 99% of the system.
Check the pressure gauge and, when it reaches 5 pounds, close the gauge. As we extinguish the compressor, we must do it as quickly as possible, but without despair, it is a matter of practice. I especially take 1 hour to charge gas in a refrigerator.
We put the filter and weld it by its 2 ends as indicated in the picture, try to leave no space so that the gas does not leak. We have to weld the filter when our manometer marks a maximum of 5 pounds, because suddenly, more pressure does not let them weld, it is very important, that is why we must constantly control our gauge.
We cool as much as we can our filter so that the moment the gas enters is properly dehumidified.
Before starting the engine, we may put gas for about 5 to 10 minutes depending on the criteria of each and how you learn.
After completing the gas charge and checking that the bottom tube or return tube is not frozen, we proceed to seal the service tube of the small capillary which goes to the pressure gauge. place it vertically so that the time to do the welding point as a ball, in the picture will be able to appreciate better.
After 3 hours of work before sealing, the gauge was fine; in 2 lbs of pressure, the freezer with a uniform cold and the condenser warm almost all the tubes. I forgot to tell them this.
A very interesting topic on how to change the hose to a freezer or food preservative you have in the following video and includes the gas load to a horizontal freezer, with the same charging method as explained in this publication. This video is a complete 11-part question, how to solve a gas leak problem.
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