When your car or truck A/C isn’t blowing “cold air”, the first concept is to panic. $$$$ symptoms are going thru your thoughts. Your A/C is damaged and the restore goes to be high-priced. This article takes the thriller out of car air conditioning and serves as a primer so you could make commonplace upkeep your self and store MONEY on professional repairs.
A/C Principles
There are books and courses that comparateur de prix incorporate volumes of facts close to aircon repair. This statistics is frequently too technical for the you to learn the way-to restore your vehicle air conditioning gadget.
In the nutshell, here is all that you want to understand approximately the basics of refrigeration so that you can fix your automobile air conditioning device yourself.
Air conditioning is the method in which air in the passenger compartment is cooled, dried, and circulated. Heat is removed from in the automobile and transferred to the out of doors air.
All air conditioners whether, it’s far an auto A/C, household refrigerator or domestic HVAC, work at the equal principles. Namely, a liquid refrigerant is modified to a fuel and then returned to a liquid. If a alternate-of-country of the refrigerant is to take vicinity, heat switch need to take region. The two (2) guidelines that follow to refrigerant are:
1. Refrigerant in a gaseous state collects, absorbs, and holds heat.
2. Refrigerant in a liquid kingdom releases that warmth.
A/C Operation and Components
For your automobile A/C to blow “bloodless air”, R-134A refrigerant ought to bypass via and change nation in 3 (three) components, one (1) receiver-dryer, and one (1) growth valve that makes up the closed automobile air conditioning device. The components of the device are:
1. Compressor – A tool that pressurizes the heated refrigerant..
2. Condenser – A radiator for refrigerant that transfers the warmth that became absorbed inside the passenger compartment to the cooler air.
Three. Evaporator – Is a small radiator positioned beneath dash within the passenger compartment. Liquid refrigerant entering the evaporator creates a strain loss. The liquid refrigerant absorbs warmness from the air blowing across the evaporator. It then boils and changes nation to vapor earlier than it enters the suction port of the compressor.
Four. Receiver-Dryer – Is a canister that shops the liquid refrigerant while the compressor is not jogging. It consists of a desiccant that removes moisture from the device.
5. Expansion Valve – Is a metering tool that controls the amount of refrigerant to the evaporator.
A/C Quick Check
A take a look at that can easily be made to test the health of the A/C gadget is the “experience check”. With engine running, turn the auto A/C manage to “ON” and the blower on “high”. Take a test force to heat the engine until the A/C machine pressures stabilize. Raise the hood. With the A/C “On”, discover the huge tubing connected and routed from the compressor (low aspect) to the expansion valve (inlet aspect) of the evaporator. Next, discover the small tubing this is connected to the discharge-facet of the compressor and routed to the hole side of the evaporator. When you feel those (2) traces, you must look at these outcomes:
1. The low-side line must sense “cool” to the touch.