General Maintenance
Refrigerant Properties
HCFC-22 or HFC-134a is the standard refrigerant in the 19XL. At normal atmospheric pressure, HCFC-22 will boil at –41 F (–40 C) and HFC-134a will boil at –14 F (–25 C) and must, therefore, be kept in pressurized containers or storage tanks. The refrigerants are practically odorless when mixed with air. Both refrigerants are non-combustible at atmospheric pressure. Read the Material Safety Data Sheet and the latest ASHRAE Safety Guide for Mechanical Refrigeration to learn more about safe handling of these refrigerants.
HCFC-22 and HFC-134a will dissolve oil and some nonmetallic materials, dry the skin, and, in heavy concentrations, may displace enough oxygen to cause asphyxiation. In handling this refrigerant, protect the hands and eyes and avoid breathing fumes.
