Question ? Could a low charge cause a hot gas valve to stick or. Stay partially closed ?
@Jon-hx7pe7 ай бұрын
is refrigeration like a/c where newer more efficient systems need larger evaporators?
@dmiestercommkitchentech30436 ай бұрын
Where is the nitrogen purge?????
@raviyadav87437 ай бұрын
Hi bro, i have one inquiry Can we use r404a refrigerant in place of r452a
@ReubenSahlstrom7 ай бұрын
R452a is not a refrigerant we run into much in the United States, but from what I read it looks like it is a drop in replacement for r404a, so it should work fine? I guess you would just want to double check the oil the compressor is using to make sure it's compatible, and mark that the unit has r404a in it. Obviously staying with the OEM refrigerant is the best option, so if you can you should just do that. Where are you from?
@AErefrigeration7 ай бұрын
Must flow nitrogen while brazing. Now you have flake in that evap
@ReubenSahlstrom7 ай бұрын
I agree that nitrogen purging (although not absolutely required) does help. In this case I just used 71 percent nitrogen. We do use nitrogen occasionally, usually on full new installs and more sensitive equipment like heat pumps.
@AErefrigeration7 ай бұрын
Your knowledge is impressive throughout your videos.
@ReubenSahlstrom7 ай бұрын
@@AErefrigeration Thanks man! I was just checking out your channel, looks like you and I do a lot of the same fun stuff! I am going to subscribe, so keep uploading those videos!
@dmiestercommkitchentech30436 ай бұрын
No decay test either did you even leak test with nitrogen at all
@ReubenSahlstrom6 ай бұрын
I am not familiar with a decay test. Could you elaborate? I use vacuum checking, and then use a digital leak detector after adding in some refrigerant.