cascade system

[gan_kul]

hi i am gan
My project is about single stage cascade refrigeration system but we are having problem of leackage of some refrigerant from it so i please need to know leackage finding methods methods in cascade systems
so please help me

[grizwold50]

hi can you please tell me what the manufacturer is. to find the leak it is best to separate the high side and low side of the high stage system pressure test both sides and see which side drops in pressure. also it is best to braze all joints not use flared joints and also change the oil in the compressor and use nitrogen when brazing.