| Important instructions regarding air-conditioner system repair |
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| An air-conditioner system designed to operate with refrigerant R12 cannot be used with refrigerant R134a, without first carrying out modifications to the refrigerant circuit. |
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| Refrigerant oils specially designed for refrigerant circuits which use R134a and for those which use R12 must never be mixed. |
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| Service stations which come into contact with a specific refrigerant must only be used with that specific refrigerant. |
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| Circuit components designed for use with refrigerant R134a are marked by means of inscriptions and/or green labels, or are manufactured (e.g. using different threads) in such a way that it is impossible to confuse them with components designed to operate with refrigerant R12. |
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| There is an information plate in the engine compartment, lock carrier plate or plenum chamber which specifies the refrigerant used. |
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| Different refrigerants must under no circumstances be mixed. |
Note | If work is to be carried out on the refrigerant circuit, take into account the information contained in chapters „Safety measures“ and „Basic aspects for working on the refrigerant circuit“. |
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