throat. Also, due to environmental concerns, we urge use of recovery/recycling/recharging equipment
when draining R-134a from the air conditioning system. If accidental system discharge occurs,
ventilate work area before resuming service.

• Do not perform pressure test or leak test for R-134a service equipment and/or vehicle air conditioning

system using compressed air. Some mixtures of air and 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.

• Do not allow the refrigerant to leak near fire or any kind of heat. A poisonous gas may be generated if

the refrigerant gas contacts fire or heat such as from cigarettes and heaters. When carrying out any
operation that can cause refrigerant leakage, extinguish or remove the above-mentioned heat sources
and maintain adequate ventilation.

• Handling liquid refrigerant is dangerous. A drop of it on the skin can result in localized frostbite. When

handling the refrigerant, wear gloves and safety goggles. If refrigerant splashes into the eyes,
immediately wash them with clean water and consult a doctor.

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STORING REFRIGERANT

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• The refrigerant container is highly pressurized. If it is subjected to high heat, it could explode,

scattering metal fragments and liquid refrigerant that can seriously injure you. Store the refrigerant at
temperatures below 40

°C {104 °F}.

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HANDLING INSUFFICIENT REFRIGERANT LEVEL

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• If an insufficient refrigerant level is detected at troubleshooting, do not charge (add) the refrigerant.

Because an accurate amount of refrigerant cannot be determined from the pressure indicated on the
manifold gauge, never charge the refrigerant. If there is too much or too little refrigerant from the
refilling, there may be secondary problems such as damage to the refrigerant cycle parts, or a
decrease of cooling performance. Therefore, if it is determined that the refrigerant level is insufficient,
completely remove refrigerant from the refrigerant cycle and refill with refrigerant to the specified
amount.

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HANDLING COMPRESSOR OIL

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• Use only ATMOS GU10 compressor oil for this vehicle. Using a PAG oil other than ATMOS GU10

compressor oil can damage the A/C compressor.

• Do not spill ATMOS GU10 compressor oil on the vehicle. A drop of compressor oil on the vehicle

surface can eat away at the paint. If oil gets on the vehicle, wipe it off immediately.

• ATMOS GU10 compressor oil (PAG oil) has a higher moisture absorption efficiency than the previously

used mineral oil. If moisture mixes with the compressor oil, the refrigerant system could be damaged.
Therefore, install caps immediately after using the compressor oil or removing refrigerant system parts
to prevent moisture absorption.

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SERVICE WARNINGS

SERVICE CAUTIONS

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