Valve Coupling Value Fast Charge Highlow 1234Yf Car Air

How to recharge the air conditioning in eight steps. Filling the air conditioning circuit with gas so it cools at full performance is a quick but somewhat complex operation. If you take it to a workshop or quick repair centre, you'll have it done in just over 30 minutes and they'll charge you between 30 and 40 euros. You can save this amount by doing it yourself; the only drawback is that you'll need a gas charging machine (you can hire one). Once you have it, these are the steps to follow to recharge the air conditioning: Locate the circuit inlet points. The inlet points of the circuit pipework have a cap that you must unscrew. The wider pipe is the low pressure one and the fine one is the high pressure one. They're usually visible, but if you can't find them, the advice is to check your car's manual. Some older models (such as the Mégane II) may have only one inlet for refrigerant gas. 2. Connect the hoses to the circuit inlets. After plugging in the air conditioning charging machine, you'll need to connect the hoses to the high and low pressure inlets of the circuit. The central gauge on the machine indicates the operating pressure, which should be between 8 and 10 bar. All the steps (both the hoses and the machine's valves) must be closed before connection. 3. Open the circuit access valves. Once the connection is secured, you need to open the hose valves (turn them to the right). First one and then the other, never both at once. It's important to open the valves only until the pressure gauge needles rise slightly, so that the pipe valve doesn't get damaged and the refrigerant gas doesn't escape when you disconnect the hoses at the end of the task. 4. Self-cleaning, gas recovery and vacuum. The first working cycle of the machine is self-cleaning and old gas recovery. To do this, open the high and low pressure valves on the machine and press the green button. When the self-cleaning is finished, open the green valve to recover the gas. On one side of the machine is the old oil tank: open the valve leading to it. Next, you need to perform a vacuum. This process takes the machine about 20 minutes. The machine takes about 20 minutes to perform this operation. 5. Check the pressures. The low and high pressure gauges should be stable around -1 bar. If not, and the needle begins to rise slowly, there's a leak in the circuit (here's how to repair an air conditioning leak). If this happens to you, stop the operation: you should not start refilling with gas and oil for the compressor. 6. Amount of oil and gas. If the air conditioning circuit is airtight, you can start charging with gas and oil. The recharge button is usually red and normally located below the evacuation button. To find out how much gas your car uses, look for a sticker on the engine that indicates it. Another alternative is to search for the model in the machine's database, which will give you the charge in kilograms. 7. Fill the charging tank. Before injecting the refill, you need to open the tank valve. The oil and gas are charged simultaneously by pressing the fill button. When the amount injected (check the screen) reaches the appropriate level, press the 'Stop' button. 8. Close the valves and check that it works. Close the HP and LP high and low pressure valves. Before putting away the equipment, check that the air conditioning is working. Also close the hose valves and start the car. After recharging the air conditioning, turn on the cooling system at full power, wait a moment and check that cold air is coming out. If the air flow is low, you should check the cabin filter. If the flow is strong, you can disconnect the machine: your work is done.