YORK® 404A is a blend. For this reason, it is essential that systems be charged only with liquid from the cylinder, not vapour. Vapour-charging YORK® 404A may result in the wrong refrigerant composition and could damage the system.
YORK® 404A (HFC-404A) is a non-ozone-depleting compound designed to serve as a long-term alternative to YORK® 502 (CFC-502) and YORK® 22 (HCFC-22) in low- and medium-temperature commercial refrigeration applications.
Applications where YORK® 404A is a suitable retrofit refrigerant include supermarket freezer cases, reach-in coolers, display cases, transport refrigeration, and ice machines.
YORK® 404A has been designed as a substitute for YORK® 502, but it is not a drop-in replacement.
Mineral oils and alkyl benzene lubricants, which have traditionally been used with YORK® 502, are immiscible with YORK® 404A. Service technicians should consult the original equipment manufacturer for the recommended lubricants.
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