Atlas V 316 XFT Flake Ice drum conversion from R22 to what refrigerant

System is flooded using a danfoss RT controller, I have emailed manufacturer for factory advise , nil reply.
Has anyone done a similar conversion with success.

Which manufacturer? JCI would know little I would guess at a local level. The machine design (Sabroe-Atlas) was sold off to Buus in Denmark? I cannot recall there being anything different in the seal area which would be the only issue for retrofit. The RT is basically a crude superheat controller.