Precautions For Servicing A/C System

Precautions For Servicing A/C System

Handling HFC-134a (R-134a) Refrigerant and Specified Compressor Oil

WARNING: Handle the HFC-134a (R-134a) refrigerant with care as follows. If not, it may cause severe injury such as blindness and frostbite.
- Do not expose the refrigerant to skin and eyes. Wear safety glasses and gloves. If the refrigerant is exposed to skin or eyes, get medical attention immediately.
- Keep the refrigerant away from fire. High temperature may result in fire.
- Do not heat the refrigerant container over 35 °C (95 °F). Otherwise, the container may cause explosion.
- Select a well-ventilated area so as not to absorb the refrigerant.

CAUTION: Do not expose bright metals to liquid refrigerant. Refrigerant combined with moisture is corrosive and tarnishes surfaces of bright metals including chrome.

NOTE:
- Do not discharge HFC-134a (R-134a) refrigerant into atmosphere.
- The specified compressor oil of HFC-134a (R-134a) is highly hygroscopic. Keep internal parts of air conditioning free from moisture and dirt. When disconnecting any line from system, install a blind plug or cap to the fitting immediately.
- If pipes or hoses are replaced, replenish A/C compressor with specified amount of compressor oil from suction side referring to "Replenishing Compressor Oil" in Operation Procedure for Refrigerant Charge.

Handling A/C Cycle Part and Tooling

CAUTION: Route drain hose so that drained water does not adhere to vehicle components.

NOTE:
- When connecting hoses and pipes, apply a few drops of compressor oil (refrigerant oil) to O-ring.
- Replace O-ring with new one, once hoses, pipes or parts are disconnected.