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...Operation of the air-conditioning system depends on a change of the refrigerant’s state that happens in the course of pressure and temperature variations inside the AC loop. Temperature-based diagnostics of components is considered as one of the basic methods to troubleshoot the system...

...AC Servicing - system flushing To perform properly, the AC system must be clinically clean inside the loop. Refrigerant and lubricant working in high temperatures and pressures, as well as components with precise mechanisms (compressor, expansion devices), require cleanliness for optima...

...Condenser corrosion possible issues The condenser is placed at the front of the car and is typically attached to other heat exchangers in the engine compartment. The condenser is crucial for the AC system operation. It ensures that the refrigerant changes from a gas to a liquid form. This...

...When to replace a Receiver Dryer The receiver dryer is a filtering unit, located on the high-pressure side of the AC loop, between the condenser and the expansion valve. The receiver dryer's main role is to filter particles and debris in the AC circuit, as well as to absorb any moisture i...

...AC troubleshooting - expansion valve malfunction The expansion valve controls refrigerant flow according to evaporator temperature and the load and cooling demand of the AC system. Nissens explains the symptoms of a failing expansion valve and what steps to take in diagnosing and repair...

...Turbocharger system air leaks The turbocharger forces extra air into the engine's combustion chamber, increasing engine efficiency and power output. The turbo operates in demanding conditions, and relies on various systems in the vehicle. Regular vehicle service is of crucial importance...

...Blower Fan Troubleshooting Interior blower fans transfer warm/cold air, depending on the set temperature, from the heater/evaporator to the passenger cabin. At the same time, the blower ensures that the air conditioning is performing properly by maintaining airflow through the evaporator....

...Turbo foreign object damage The turbocharger is a highly sophisticated and fragile component. It is a turbine-driven device that forces extra air into the engine's combustion chamber, thus increasing engine efficiency and power output. The turbocharger operates in extremely demanding and...

...52 October 2022 AUTOBIZ Garage TechTips See this and 1,000s more Tech Tips on TechTips.ie 52 October 2022 AUTOBIZ The heat pump solution is one of the most efficient ways of producing heat. Depending on the system type, the heat pump can reach above 300% efficiency, compa...

...EV and Hybrid heat pump system fundamentals Unlike a conventional vehicle’s A/C, the heat pump based system is capable of both heating and cooling. Nissens explains the key components of these new systems that are becoming more common, as more hybrid and electric vehicles are entering...



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