MAHLE RTI RRC770A - Manual (Page 6)

Page 3
CAUTION
Avoid breathing refrigerant or lubricant vapor or mist.
Exposure may irritate eyes, nose and throat.
If accidental system discharge occurs, ventilate work area before resuming service.
Additional health and safety information may be obtained from refrigerant and lubricant
manufacturers.
Special Considerations with R134a
R134a has been shown to be nonflammable at ambient temperature and atmospheric
pressure. However, recent tests under controlled conditions have indicated that, at
pressures above atmospheric and with air concentrations greater than 60% by volume,
R134a can form combustible mixtures.
While it is recognized that an ignition source is also required for combustion to occur, the
presence of combustible mixtures is a potentially dangerous situation and should be
avoided.
Under no circumstances should any equipment be pressure tested or leak tested with
Air/R134a mixtures. Do not use compressed air (shop air) for leak detection in R134a
systems.