FLOORPLATE ASSEM. 9K2403 - Caterpillar

AIR CONDITIONING SYSTEMS AND COMPONENTS
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The standard air conditioning system contains five basic components:Compressor - Increases pressure and temperature of refrigerant vapor.Condenser - Removes the heat from the high pressure high temperature refrigerant vapor causing the vapor to change into high pressure liquid refrigerantIn-line dryer - Contains the desiccant and the orifice tube. Quick disconnects allow the in-line dryer to be easily changed when neededEvaporator - Low pressure liquid refrigerant boils, collecting heat from the surrounding area.Accumulator - Acts as a liquid/vapor separator and ensures that only vapor will reach the compressor.On the orifice tube system, the liquid refrigerant that is leaving the evaporator can damage the compressor. Therefore, an accumulator is located in the suction line after the evaporator. The accumulator acts as a liquid/vapor separator. The accumulator ensures that only vapor will reach the compressor.On some orifice tube systems, the orifice tube is located in the low pressure liquid line to the evaporator and the desiccant is in the accumulator.On systems with an in-line dryer, the desiccant is in the dryer.Compressor
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The dual purpose of the compressor is listed below:
Increase the temperature and pressure of refrigerant gas from the evaporator.
Circulate the refrigerant throughout the system.The compressor has reed valves that control the entrance and the exit of refrigerant gas during the pumping operation.As the piston moves downward in the bore, the intake reed valve opens and the exhaust reed valve closes. The low-pressure, heat-laden refrigerant gas is drawn from the evaporator into the compressor. As the piston moves upward in the bore, the compressor pressurizes the gas. This increases the intensity of the heat.Since temperature is a measurement of heat-intensity, the temperature of the gas increases. The high-pressure, high-temperature gas closes the intake reed valve and opens the exhaust reed valve. The gas is forced through a hose to the condenser.The pressure increase is accomplished by adding a restriction in the high pressure side of the system. The restriction is caused by the orifice tube. The orifice tube is explained later in this presentation.Condenser
The purpose of the condenser is to transfer the heat in the refrigerant gas to the atmosphere. The condenser converts the refrigerant gas into a liquid. High pressure, high temperature refrigerant gas flows from the compressor into the condenser. As the hot, high pressure gas flows through the condenser, heat flows from the hot gas to the cooler air through the condenser coils. The high pressure refrigerant gas cools and condenses into high pressure liquid. The high pressure liquid flows from the condenser to the in-line dryer.Ram Air - Used in automotive applications.Forced Air - Used on construction equipment.The ram air condenser depends on machine movement in order to force large volumes of air through the condenser coils.The forced air condenser uses fans to move large volumes of air through the condenser coils. The air is cooler than the refrigerant gas that is inside the condenser. Heat flows from the hot refrigerant gas to the cooler air.In-line Dryer and Orifice Tube
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The in-line