Monarch SE 2004-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Section 8 Electrical System | 327
R-134a Refrigerant:
R-134a is classified non-explosive, non-flammable and non-corrosive.
There is hardly any odor and it is much heavier than air. R134a is ozone friendly;
however, it is not technician friendly. Proper care in handling and adequate
ventilation must be observed. Under normal atmospheric pressures and temperatures
R134a will evaporate so quickly it will freeze anything it comes in contact with.
The open container boiling point for R134a is minus 21.7º F. This low boiling
point makes for an ideal refrigerant. The tremendous amount heat transfer which
occurs when a liquid boils, or vapors condense, forms the basic principles of all
A/C systems. The amount of heat required to raise or lower the temperature of one
pound of water by 1º F equals one British Thermal Unit (BTU). The BTU is the
standard measurement of an air conditioner system.
psi gauge_temp.eps
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