Refrigeration cycle function - GF83.40-P-2001P

WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2007 Mercedes-Benz C350, 2007 Mercedes-Benz C280, 2007 Mercedes-Benz C230, 2006 Mercedes-Benz C55, and 2006 Mercedes-Benz C350. However, it is still accessible from the selected car via links, so may be relevant.

MODEL 203.0 /2 /7 with CODE (580) Air conditioning (or Tempmatic for USA) with CODE (580) Automatic air conditioning with CODE (581) Automatic air conditioning with CODE (581) Comfort automatic air conditioning

Function diagram

Fig 1: Refrigeration Cycle Function Diagram

The refrigerant compressor (A9) which is driven by the engine compresses the refrigerant vapor, which heats up in the process. The refrigerant is conducted to the condenser (2).

The surface of the condenser (2) is used to withdraw the compression heat from the refrigerant. The refrigerant liquefies during cooling. As it flows through the fluid reservoir (3) the refrigerant is cleaned of chemical and mechanical impurities. The cooled and liquefied refrigerant flows through the expansion valve (4) into the evaporator (5), which is located in the fresh-air flow. The refrigerant is then vaporized. Through this evaporation process heat is extracted from the fresh air flowing past from outside over the tube and fin system so that air cools down.

The air humidity carried along is converted to condensed water, which is routed to the outside. The air is thus dried. The refrigerant compressor (A9) draws in the refrigerant which has turned gaseous again through the collection of heat and compresses it.

When the engine is running and the blower motor is switched on, the interior can be supplied with cooled air through the various air outlets. The degree of cooling intensity is dependent upon the previously set interior temperature and the output of the blower motor.

	Electric fan motor/air conditioning system, location/task/function		GF83.40-P-2151P
	Condenser location/task/function		GF83.40-P-2152P
	Evaporator location/task/design/function		GF83.40-P-2121P
	Fluid reservoir location/task/design/function		GF83.40-P-2122P
	Expansion valve, location/task/design/function		GF83.40-P-2123P
	Air conditioning coolant temperature sensor location/task/function		GF83.40-P-2155P
	Refrigerant pressure and temperature sensor location/task/function		GF83.40-P-2171P
	Refrigerant compressor, location/task/design/ function		GF83.55-P-2100P
	Refrigerant compressor control valve location/ task/function		GF83.55-P-2102P
	Belt pulley, location/task/design/function		GF83.55-P-2103P
	Pressure relief valve location/task/function		GF83.55-P-2104P
	Evaporator core temperature sensor, location/ task/function		GF83.57-P-2109P