R 401 changing in what?

[texanul]

I have a cooling machine for milk factory. Originally the machine was fiiled with r 12 ,after few years the german put 401 inside and now the machine is in romania. I had a leak and now i must charge again but i don`t have r401. What can i put in place?

[AlexG]

It is strange that R12 was replaced by R401 (mixture R22 R152a R124) Usualy R12 replace by R134a (dont forget to replace mineral oil for POE).

[JoeAT50A]

R32 has boiling point -62F
R152a >>-13F and R124>>10.4F
Totally different boiling points, and compositions will change after leak and it can not be run, R401 is not advisible to have direct charging method. Recovered all the remaining refrigerant and charge with fresh R401.
Or use AlexG's advise to replace with R134a. Oil is very important and hard to clean, handle with care.