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Preparing to service CFC-free domestic refrigerators.

Author(s) : FAKES D.

Type of article: Article

Summary

The article begins with a survey of domestic refrigerator design. Servicing techniques are then discussed for hermetic units charged with R12 before CFC regulations, under current regulations, then to the next generation using a non-CFC refrigerant. Originally, it was common practice to discharge R12 to atmosphere. This is now disallowed and service personel must be authorised to handle R12 and to reclaim and recycle it on site. One variation of this is practised in Australia. A 'bag' can be used to contain R12 from a system. This bag, which has limited re-use, can be taken to the workshop for reclaim. The next generation of units will be charged with R134a or MP39, a tertiary blend which is more tolerant of mineral oil traces left in a retrofit. As R12 and the new refrigerants are not compatible, the service engineer will need to carry duplicate gauge sets, charging pipes, etc. Training will need to be more rigorous.

Details

  • Original title: Preparing to service CFC-free domestic refrigerators.
  • Record ID : 1994-3505
  • Languages: English
  • Source: AIRAH J. - vol. 47 - n. 11
  • Publication date: 1993/11
  • Document available for consultation in the library of the IIR headquarters only.

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