Filling Fridge with Coolant: Repair Leaked Tube, R600a, Schrader Valve, Soldering & DIY Tips

I have a fridge that has leaked due to a leak (one of the tubes in the fridge has been stabbed with a knife). I soldered the hole and now I wonder how to properly fill the system with the factor?

I intend to buy a Schrader valve with a piece of tube and solder it to the crimped end on the aggregate. According to the nameplate, 20g R600a was in the system. So I will buy about 400g bottle with R600a available on "alledrogo". I probably still need to buy a valve for the cylinder bottle but I do not know what end this cylinder has? Will the valve like the picture below be suitable?



There is still the question of whether you need to somehow suck the air that is in the system before filling. If so, how can you do it without professional equipment?

CiekawyŚwiata wrote:

There is still the question of whether you need to somehow suck the air that is in the system before filling.

Without making a vacuum (extracting air and moisture) in the system, forget about any filling.
The more that the R600a is flammable. Vacuum can be "done" using a compressor from another fridge / refrigerator.
You will need the so-called mainfold (a set of valves with manometers) on manometers which you will see what is happening in the system.

CiekawyŚwiata wrote:

I have a fridge that has leaked due to leakage

You won't do it at home.
It is not worth it, I had a refurbished refrigerator at the specialist's, he ensured long years of coming ..... Yes Yes.
Not half a year has passed and the fridge has unsealed again.

Do not forget to replace the filter drier

Why go for something without basic tools such as pressure gauges or a vacuum pump ... And then a hundred posts because the tube is freezing because I gave too much because it does not cool, how to do a vacuum with a compressor And I'm not talking about basic refrigeration knowledge anymore.