Precautions on Servicing A/C System

Precautions on Servicing A/C System

WARNING: Should refrigerant HFC-134a (R-134a) is exposed to your eye(s), consult a doctor immediately.
^ Do not reuse your hand to rub affected eye(s). Instead, use fresh cold water to splash it 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) is exposed to 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 to liquid refrigerant.
^ Do not heat refrigerant container higher than 40 °C (104 °F).
^ Do not discharge refrigerant into atmosphere.
^ Do not expose bright metals to liquid refrigerant. Refrigerant combined with moisture is corrosive and tarnishes surfaces of bright metals including chrome.
^ Never use heat for bending pipes. When bending a pipe, try to make its bending angle as smooth 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 handling recovery and recycling equipment, be sure to follow the instruction manual for the equipment.
^ Check local governmental regulations regarding working with refrigerator systems and its tooling.
^ 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.
^ When tightening or loosening a fitting, use two wrenches, one for turning and the other for support.
^ 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:Manual Type.

Refrigerant Recovery
When discharging refrigerant out of A/C system, always recover it by using refrigerant recovery and recycling equipment because discharging refrigerant HFC-134a (R-134a) into atmosphere would cause adverse effect to environments referring to "Recovery" in Operation Procedure for Refrigerant Charge: Manual Type.

Refrigerant Charge
After performing compressor oil replenishment and evacuation, charge a proper amount of refrigerant to A/C system referring to "Charge" in Operation Procedure for Refrigerant Charge: Manual Type.