GENERAL REFRIGERANT PRECAUTION

WARNING:
• Never breathe A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and throat. Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant.

• Never pressure test or leakage test HFC-134a (R-134a) service equipment and/or vehicle air conditioning systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a) have been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or property damage. Additional health and safety information may be obtained from refrigerant manufacturers.

WORKING WITH HFC-134a (R-134a)

CAUTION:
• CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. These regrigerants must never be mixed, even in the smallest amounts. Compressor malfunction is likely occur if the refrigerants are mixed.

• Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components.

- Never allow lubricant (A/C sysytem Oil Type R) to come in contact with styrene foam parts. Damage may result.

REFRIGERANT CONNECTION

A new type refrigerant connection has been introduced to all refrigerant lines except the following location.

• Expansion valve to evaporator • Refrigerant pressure sensor to liquid tank

WARNING:
Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it.

• Apply lubricant to circle of the O-rings shown in illustration when connecting tube. Be careful not to apply lubricant to threaded portion.

Name : A/C System Oil Type R

• O-ring must be closely attached to the groove portion of tube.

• Be careful not to damage O-ring and tube when replacing the O-ring.

• Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is installed to tube correctly.

• Perform leakage test and make sure that there is no leakage from connections after connecting line.

Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten connections of seal seat to the specified torque.

COMPRESSOR

CAUTION:
• Plug all openings to prevent moisture and foreign matter from entering.

• Store it in the same way at it is when mounted on the car when the compressor is removed.

• Follow “MAINTENANCE OF LUBRICANT LEVEL IN COMPRESSOR” exactly when replacing or repairing compressor. Refer to HA-74, "Description".

• Keep friction surfaces between clutch and pulley clean. Wipe it off by using a clean waste cloth moistened with thinner if the surface is contaminated with lubricant.

• Turn the compressor shaft by hand more than five turns in both directions after compressor service operation. This distributes equally lubricant inside the compressor. Let the engine idle and operate the compressor for one hour after the compressor is installed.

• Apply voltage to the new one and check for normal operation after replacing the compressor magnet clutch.

LEAK DETECTION DYE

CAUTION:
• The A/C system contains a fluorescent leak detection dye used for locating refrigerant leakages. An ultraviolet (UV) lamp is required to illuminate the dye when inspecting for leakages.

• Wear always fluorescence enhancing UV safety goggles to protect eyes and enhance the visibility of the fluorescent dye.

• The fluorescent dye leak detector is not a replacement for an electrical leak detector. The fluorescent dye leak detector should be used in conjunction with an electrical leak detector to pin-point refrigerant leakages.

• Read and follow all manufacture’s operating instructions and precautions prior to performing the work for the purpose of safety and customer’s satisfaction.

• A compressor shaft seal should not necessarily be repaired because of dye seepage. The compressor shaft seal should only be repaired after confirming the leakage with an electrical leak detector.

• Remove always any remaining dye from the leakage area after repairs are completed to avoid a misdiagnosis during a future service.

• Never allow dye to come into contact with painted body panels or interior components. Clean immediately with the approved dye cleaner if dye is spilled. Fluorescent dye left on a surface for an extended period of time cannot be removed.

• Never spray the fluorescent dye cleaning agent on hot surfaces (engine exhaust manifold, etc.).

• Never use more than one refrigerant dye bottle [1/4 ounce (7.4 cc)] per A/C system.

• Leak detection dyes for HFC-134a (R-134a) and CFC-12 (R-12) A/C systems are different. Never use HFC-134a (R-134a) leak detection dye in CFC-12 (R-12) A/C system, or CFC-12 (R-12) leak detection dye in HFC-134a (R-134a) A/C system, or A/C system damage may result.

• The fluorescent properties of the dye remains for three or more years unless a compressor malfunction occurs.

NOTE:

Identification
• Vehicles with factory installed fluorescent dye have a green label.

• Vehicles without factory installed fluorescent dye have a blue label.