Precautions on Servicing A/C System

sPrecautions on Servicing A/C System

WARNING:
- When refrigerant HFC-134a (R-134a) strikes your eye(s), consult a doctor immediately.
- Do not use your hand to rub affected eye(s). Instead, use quantities of fresh cold water to splash over affected area to thus gradually raise its temperature above the freezing point.
- Obtain proper treatment as soon as possible from a doctor or eye specialist. Should liquid refrigerant HFC-134a (R-134a) get on your skin, such affected part should be treated in the same manner as when skin is frostbitten or frozen.

Handling Refrigerant HFC-134a (R-134a)
- Always wear goggles to protect your eyes.
- Avoid direct contact with liquid refrigerant.
- Do not heat refrigerant container higher than 40 °C (104 °F).
- Do not discharge refrigerant into atmosphere.
- Do not allow liquid refrigerant to touch bright metals. Refrigerant combined with moisture is corrosive and will tarnish surfaces of bright metals including chrome.

Refrigerant Line







- Never use heat for bending pipes. When bending a pipe, try to make its bending radius as slight as possible.
- 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.
- When connecting hoses and pipes, apply a few drops of compressor oil (refrigerant oil) to seats of coupling nuts and O-ring.
- Never reuse O-rings. Always use new ones.
- When tightening or loosening a fitting, use two wrenches, one for turning and the other for support.
- Tighten flared nut and bolt to the following specified torque.

Tightening Torque
Flared nut 13 N.m (1.3 kg-m, 9.5 lb-ft)
Bolt 10 N.m (1.0 kg-m, 7.5 lb-ft)

- 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.