How To Charge Gas/Refrigerant In A Refrigerator - R134A Freon

in today's video we will learn how to vacuum the refrigerator system and charge refrigerant inside the refrigerator now let's weld all the points of the compressor as we have installed a new compressor in the refrigerator first of all i will weld the discharge pipe now for checking your welding you can use a mirror through this you can see the back side of the pipe and you will figure out whether you had welded it correctly or not now i will fit and weld the charging line on this side of the compressor now i will install the filter with it i will use and install this 15 gram filter made in italy with the refrigerator's condenser first of all i am welding the capillary tube with a filter put your welding torch downward to let the filter get hot now the filter has warmed up and our soldering has been completed in 20 to 30 seconds now i have made a pipe ready for the liquid line of the refrigerator i am welding that as well complete the welding process as fast as possible through which your weld finishes nicely see this pipe has also been welded the welding should take 20 to 30 seconds now let's weld the liquid line which goes inside the filter all the pipes welding should take less than one minute and should not exceed this time as if you took more than one minute the pipe can overheat and your welding will be of no use this is our last welding for the compressor i am soldering the last pipe of the compressor which is the suction line solder the pipes the same quickly as possible do the soldering precisely as no area of the pipe should be left from welding see now we have completed the soldering now i have set up the system for vacuuming the refrigerator i've kept the vacuum pump over here with the vacuum pump i have installed the manifold gauge as well and the other side of the gauge is installed with the charging line so here the system is ready to be vacuumed let me start the vacuum pump first i will open the nut of the manifold gauge so that the air can go out of the system easily now i am going to switch on the pump as i started the vacuum pump the gauge was going towards minus the -1 is written on the indicator as you can see now i will leave the system to vacuum for 15 to 20 minutes and we'll still leave the system to vacuum after the needle goes to zero through which the air inside will get burned whenever we vacuum any system the air inside starts getting burned as you can see here as well water was inside this system of refrigeration in this refrigerator as you can see smokes are coming out of the pump this is water burning we can easily figure it out and it is also getting caught on the camera it's good that it is burning the water inside i will keep vacuuming it for a maximum of half an hour so that all the moisture inside could burn and come out of its refrigeration system now it's almost 20 minutes the refrigeration system has been vacuumed let me show you the vapors from the pump by the burning of moisture are also not coming out of the fridge so the manifold gauge is also showing us that the system has been appropriately vacuumed and the needle you can see is showing -1 on the gauge first we will close the gauges valve so the connection between the system and the pump may break now i will switch off the pump and this way the vacuum of the refrigeration system has been completed now i will crack the system with gas and then start charging refrigerant but before cracking the system and filling the refrigerant in the refrigerator we left the system for 20 minutes to know whether the leakage was in the fridge or not the needle of the gauge is standing in the same position if the needle on the gauge starts moving upwards it means that the fridge has leakage or any other problem is present in the refrigerator but if there is no such thing happening on the gauge it means that the system is fine and ready for gas charging now whenever we charge gas in any refrigerator the gas is charged by weight in the fridge system so you should have a proper scale for that purpose now i'm placing the r134a refrigerant cylinder on the weight machine i will install the red colored inlet pipe of the gauge with that gas cylinder after attaching the pipe to the gas cylinder open the valve of the gas cylinder you can charge refrigerant in the refrigerator with two methods the r-134a refrigerant is charged in the form of gas therefore the liquid form of the refrigerant should not be charged in the fridge through which the compressor can get bad the first method is when you charge the refrigerant slowly you will add it in the form of gas the second method is if you charge its full pressure one time by weight then you will have to charge it in liquid then you will have to wait for half an hour for the gas inside the refrigerator to turn into vapors and then you have to turn on the fridge now see friends this cylinder's face is upward so that the liquid will go inside the system and i know it so first i will remove the air out from the pipe of the cylinder i will now open this red pipe a little and see the air has come out of the pipe now i will tight the red pipe back again and i will tie it correctly to prevent any air from going inside the system i will put the weight machine to zero by pressing the tr button so see the scale of the weight machine is showing zero now i will open the valve of the manifold gauge and after opening the gauge valve the refrigerant will be charged in liquid form you can see the scale minus 44 minus 45 and so on so we have to charge 210 grams of refrigerant in this refrigerator so the refrigerant of 208 grams has been filled in the refrigerator according to the weight which is the requirement of this fridge now i will leave the refrigerator for almost half or an hour so that the refrigerant inside the fridge could turn liquid into vapors and then i will start the refrigerator now you can see this compressor i have installed it is a panasonic company's compressor and the compressor installed before this was of danfoss see i have used the same relay i have just rotated it and changed its position this way all the connections on the relay will be the same and the compressor will work perfectly now enough time has passed and i have installed electricity to it and i will turn it on the compressor has turned on and i can hear the voice of the compressor running you can see on the ampere meter that the system is consuming 1.8 amperes and gradually the amperes will decrease now i will have to keep an eye on the gauge of what pressures it shows and check whether the back pressure is okay to check this we will have to wait and keep checking it now see the system is working perfectly if you want to check how your refrigeration system works use your hands for this you have to check the condenser pipe when you touch its condenser it should be warm and when you go upwards it should also be heated above when we see the condenser pipe from downward on the left side this is its liquid line it should not be that cold nor too hot then it means your refrigerator is perfectly working but if the pipe is too cold then it means the system is chalked and if it's too hot then it means that the system has refrigerant in excess amount we will have to take the excess gas out of the system so this way you can check and have an idea whether the system is working fine after refrigerant charge or not now let's talk about the final result and we have got its final result see the compressor is consuming 1.2 amperes which is a good thing after this if we see its return pipe it is cold and the liquid should never come back in it it should be cold slightly if it is too cold or ice is on this pipe then it means the refrigerator has excessive gas as the return on this pipe should be vapors not liquid which help the compressor to cool down after this if we see the refrigerator final results the freezer temperature is minus 21 degrees celsius and see the sensor is inside the freezer box which is showing us the temperature now let's talk what should be its back pressure and as well as its standing pressure i have switched off the fridge right now and let me tell you an important thing that the back pressure and standing pressure of the refrigerator depends on the temperature and the amount of refrigerant charged in the refrigerator if you had overcharged the refrigerant the pressure and temperature both could be high you must be aware of this if you want to measure both the pressures accurately the amount of refrigerant i charged is accurate and the pressures are also accurate now see the temperature of the freezer is 29 degrees celsius which means its standing pressure should be 100 pounds per square inch let me show you see it is showing 99 pounds per square inch on the gauge the standing pressure depends on the temperature as if the temperature would have been 30 degree then the pressure would be 100 pounds per square inch and so on and when the temperature decreases then the pressure will also go low now when we talk about the back pressure it also depends on the amount of gas charge as well as temperature as i have charged the refrigerant accurately i have turned the fridge on again and the temperature is going to be minus 21 degrees we should get a back pressure of 5 pounds per square inch which is above zero i hope you learned a lot from this video so this was for today's video I will catch you in the next one

Channel: Forever Tech English

Views: 435,990

Keywords: refrigerator, refrigerator gas charging, refrigerator freon recharge, refrigerator refrigerant recharge, r134a recharge refrigerator, r134a gas charging, freon, gas, refrigerant, gas charging in refrigerator, gas charging in fridge, how to add freon to a refrigerator, how to add gas to fridge, how to add refrigerant to a refrigerator, r134a, refrigerator gas filling, refrigerator freon refill, refrigerator refrigerant r134a, freon gas in refrigerator, refrigerant gas charging, how to

Id: YMfZi3eEqHI

Length: 10min 21sec (621 seconds)

Published: Thu Jul 28 2022