R and V Works FF6 Informacje Techniczne Strona 76

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Compressor Application Manual
74
VII
Due to problems of chemical
compatibility, the filter drier normally
used for a system that operates with
R 12, shall be substituted by one
compatible with the blend (see Chapter
VI, item 2).
Refrigerant fluids (blend) in the system
shall only be charged at the liquid
stage, due to the aforementioned
differences in density.
4 - Alternative refrigerant R 134a
Chosen to replace the R 12 because it has
properties similar to it and does not have the power
to destroy the ozone layer (ODP = 0).
Comments:
Leakage will cause little (R 134a has GWP)
environmental impact.
Only recommended for use in new systems
specially designed for its use. The main
reasons are:
– It may require an alteration in the capillary tube
to maintain the system's performance, when
compared to the use of R 12.
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