Refrigerant Identification / Testing
Special Tools
1. Use the A/C refrigerant analyzer to identify the refrigerant type and purity. Refer to the manufacturer's operating instructions.
^ If the purity percentage of the R-134a or R-12 is 98% or greater by weight, a green PASS LED will light. Proceed with the refrigerant recovery.
^ If the R-134a or R-12 does not meet 98% purity, a red FAIL LED will light. Proceed with the refrigerant recovery.
^ Levels of R-22 and flammable hydrocarbons above 2% will light the red FAIL LED. Refer to Recovery of Contaminated A/C Systems in this section.
^ If a flammable hydrocarbon is detected above 5%, both the FAIL and HYDROCARBON LED's will light and a horn will sound.