We deal with a lot of Warehouse supermarkets were the systems hold sometimes 400-1500# of 507 or 404. What do you guys do for leak checking? I found that Leak detectors give off a false sense.

We have been adding around 50#s of 22 to the system and using Halides. We find that we find the leaks more effiencient and no harm is done to the system. We actually picked this up from Hussmann.