retro from r-12 to 409a

[hardcor]

any thing you guys know about retro from 12 to 409a, besides the oil, I should know about for a walk in box,can use the same lpc and a 12 drier , right? any other little things I should expect? all info would be appriciated.My first retro so hope all goes well. thanks.

[charliegolf720]

Try Hotshot instead. I believe it is 414B. Don't even have to mess with changing over from mineral to POE. Call a trusted wholesaler.

[tomt]

Make sure you put it in as a liquid,no gas.Oil and all controls should be ok.
Did a few changes with 409A.
Recover all R-12, pull vac.
See if there is a weigh in charge on the nameplate.

[dschwab9]

409a works fine with mineral oil for medium temp. It will have oil return problems at lower temps. 409a is probably not the best choice for low temp applications anyway

[trimble]

Hot Shot works alot better.

I would post this in the refrigeration and ice making section.