Precautions on Servicing A/C System

Precautions on 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.
- Avoid contact with skin and eyes by wearing safety glasses and gloves. In case of contact with skin or eyes, get medical attention.
- Keep away from fire. High temperature may cause toxic gas. Therefore, take care of much room ventilation.
- The temperature above 40 °C (104 °F) in the refrigerant container may cause explosion.

CAUTION:
- Do not expose bright metals to liquid refrigerant. Refrigerant combined with moisture is corrosive and tarnishes surfaces of bright metals including chrome.
- 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 specified amount of compressor oil to compressor suction side referring to "Replenishing Compressor Oil" in "Operation Procedure for Refrigerant Charge".

Handling A/C cycle part and tooling

CAUTION:
- 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 and parts disconnected.
- Route drain hose so that drained water does not make any contact to vehicle components.
- If pipes or hoses are replaced, replenish specified amount of compressor oil to compressor suction side referring to "Replenishing Compressor Oil" in "Operation Procedure for Refrigerant Charge".
- When handling recovery and recycling equipment, be sure to follow the instruction manual for the equipment.

NOTE: Check local governmental regulations regarding working with refrigerator systems and its tooling.