Hello US Iceman,

I had to convert an ammonia system to R 22. The main issue was cleaning the complete system properly so that there was no trace of ammonia. I had installed 2 nos. of TEV and other controls for the R 22 system and had removed the ammonia accumulator. The leakage were located and stopped. It was from the compressors shaft seal. The system has now been working for over 6years, and the customer is getting a better production. It is an Ice Plant.

If the system were to be converted from R 22 to Ammonia , then there are the problems of corrossion due to the chemical properties.

As you have stated earlier in this thread that R 22 has a lot in common with Ammonia and as such I too feel that it would be a better idea to convert it to R 22.

I have just returned and everything is fine.