R and V Works FF6 Información técnica descargar pdf (Pagina 77)

Compressor Application Manual

– It requires all components of the system to be

free from contamination (alkaline substances,

grease, wax, water, paraffin, silicone,

chlorinated residues, etc.), due to the

characteristics of the compressor to be used.

To date, there is no definition of a sufficiently

effective cleaning method that is reliable and

reasonably uncomplicated and which

guarantees the simple substitution of the R 12 of

a domestic refrigeration system with R 134a.

• R 134a may only be used in compressors

specially designed for its use due to the slightly

higher operating pressures in relation to the

applications with R 12.

These characteristics required a new electric

motor design and chemically compatible

materials employed in its manufacture.

Compressors produced to use R 12, however,

have materials used in their manufacturing

process that are not compatible with the ester

oil used in the same R 134a.

• Due to problems of chemical compatibility,

it will be necessary to use a special filter drier for

the R 134a.

• Due to the high hygroscopicity of the ester

oil used in the compressors specifically for

R 134a, we recommend that the compressor or

system does not remain open to the air for more

than 15 minutes. The vacuum process using a

pump is mandatory.

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R and V Works FF6 Información técnica Pagina 77