Arkansas HVACR NewsMagazine February 2018

S tate, National, Chapter News Tech News

to R-453A. This allows an existing R-22/mineral oil system to retain its original oil once retrofitted to R-453A, preventing moisture sensitivity problems associated with newer or retrofitted systems incorporating polyolester lubricants. Because R-453A is a 400-series refrigerant blend, it has fractionation potential and a temperature glide. To avoid blend fractionation, R-453A should be charged into the system as a liquid instead of a vapor. However, if the entire contents of the cylinder To avoid blend fractionation, R-453A should be charged into the system as a liquid instead of a vapor. are to be used in the charging procedure, vapor charging can be performed. Just be aware that all the refrigerant in the cylinder must be used in charging the same system when vapor charging, otherwise fractionation can occur. R-453A is a safe refrigerant blend can be both recovered and reclaimed. Leak detectors used for any HFC- based refrigerant can be used for R- 453A. Capillary, fixed orifice, or variable expansion refrigerant metering devices can be retrofitted

R-453A

Drop In for R-22 R-453A is a hydrofluorocarbon /hydrocarbon (HFC)/(HC) based, non-ozone depleting, low-global warming potential (GWP), direct drop-in replacement refrigerant blend for HCFC-22 (R-22). It can be used to replace R-22 in both air conditioning and refrigeration applications across the temperature ranges where R-22 is commonly used. Refrigeration applications using R-453A can reach down to a minus 20°F evaporator temperatures. Applications for R- 453A include air conditioning, commercial and industrial refrigeration, chillers, beer cellars, cold storage, refrigerated transport, supermarkets, appliances, dairy chillers, and others. LUBRICANT AND SERVICING R-453A is compatible with the traditional lubricants and newer synthetic lubricants in the HVACR industry, including mineral oil, alkylbenzene, and polyolester. No oil changes are required when retrofitting an existing R-22 system