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PRECAUTIONS HAC-9 < PRECAUTION > [AUTOMATIC AIR CONDITIONING] C D E F G H J K L M A B HAC N O P Do not attempt to connect HFC-134a (R-134a) service couplers to a CFC-12 (R-12) A/C system. The HFC-134a (R-134a) couplers will not properly connect to the CFC-12 (R-12) system. However, if an improper connection is attempted, discharging and contamination may occur. Shut-off valve rotation A/C service valve Clockwise Open Counterclockwise Close RHA273D |