Extensive vehicle fleet testing, followed by laboratory analysis of various vital parts of the air-conditioning systems, have been performed in order to develop a procedure for retrofitting existing CFC-12 automotive air-conditioning systems to HFC-134a. Testing shows that a compressor in good condition that has previously been used with CFC-12, can be re-used with HFC-134a provided that the appropriate oil, desiccant and elastomer is used. Testing has also shown that flushing the system is not necessary. The procedure in this paper was developed as a result of testing and proposes a procedure that will maintain an 'acceptable' life of the compressor at a reasonable cost.
The development of a retrofitting procedure for CFC-12 automotive A/C systems to HFC-134a and P.A.G. lubricant
Entwicklung des Nachrüstungsverfahrens für CFC-12-Fahrzeugklimaanlagen mit dem HFC-134a-Kältemittel und Polyalkylenglykolschmiermittel
SAE Technical Papers ; 1-10
1993
10 Seiten, 3 Bilder, 9 Tabellen, 9 Quellen
Conference paper
English
Automotive engineering | 1993
|SAE Technical Papers | 1993
|British Library Conference Proceedings | 1993
|Development of a lubricant for retrofitting automotive air conditioners for use with HFC-134a
Automotive engineering | 1994
|Development of a Lubricant for Retrofitting Automotive Air Conditioners for Use with HFC-134a
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