Refrigerants for R22 Retrofits – Refrigerant Replacement Guide

Now that we are in the midst of the R22 phaseout, overtime the need to retrofit R22 systems is sure to rise. Exactly as to when that will happen remains the subject of debate and speculation, and will not be addresses here. However, for those who wish to be proactive, here are some retrofit pointers.

Case Study Food Process Refrigeration Milk Chilling

A milk storage tank has been successfully converted from R22 to R407C, an HFC with expected long term availability into the future.The system comprised of two bulk storage tanks fitted with two refrigeration units running in parallel. The units used Prestcold compressors with air cooled condensers. One system was converted to R407C while the other was left running on R22 for reference.The retrofit was carried out using the now well documented procedure for converting to R134a.