[daneel404a]

Can I assume that to charge an auto cascade system would require a purchase from the manufacturer with the proper weighted blends for the specific unit in one tank?

 

[daneel404a]

That is the 'easy' way, but not the fastest. After awhile, you can get pretty good at getting a system back on line ASAP. For example, the the high side is too high, then you add the higher temp refrigerants. If the pressures are too low, you add the low temp refrigerants.

It's real easy to over charge when doing this. Meaning, that if the system turns off, the standing static might be too high for the compressor to restart. So you have to be very careful when doing this stuff out in the field.

Interesting, thanks. We have a lot of -80C's here but haven't come across an auto cascade yet to look at the label.