QUENCH EXPANSION VALVE: This valve controls expansion of liquid refrigerant to gas in
the suction line when the suction line superheat rises above 30 F to 31 F (-1 C to 0 C).
DRIER/FILTER (DEHYDRATOR): A dehydrator is a device used to remove water or water
vapor from the refrigerant.
CONDENSER COIL: It is constructed of interconnected parallel tubes which are retained in
a series of multiple, closely spaced fins. Hot compressed gas is air-cooled to a liquid in this coil.
COMPRESSOR: It consists of a reciprocating compressor driven by an electric motor,
hermetically sealed into a steel container with a lifetime charge of oil. A crankcase heater tube is
located on the side of the container. The heater is thermostatically controlled to prevent migration
of liquid refrigerant into the crankcase where it would become mixed with the oil.