Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Refrigerant Circuit With RESTRICTOR And Reservoir
Arrows point in direction of refrigerant flow.
A- Low pressure side of refrigerant circuit.
B- High pressure side of refrigerant circuit
| Component | Aggregate State Of Refrigerant | Pressure (Bar Positive Pressure) | Temperature In Degrees Celsius |
|---|---|---|---|
| -1- A/C compressor B-side | Gas | Up to 20 bar | Up to + 70°C (158°F) |
| -2- Condenser | From gas to vapor to fluid | Up to 20 bar | Up to + 70°C (158°F) |
| -3- Restrictor | From fluid to vapor | B-side through 20 bar, A-side greater than 1.5 bar | B-side up to + 60°C (140°F), A-side warmer than -4°C (-25°F) |
| -4- Evaporator | From vapor to gas | Greater than 1.5 bar | Warmer than -4°C (-25°F) |
| -5- Reservoir | Gas | ||
| -6- A/C compressor A-side | Gas |
Pressures on A-side are maintained at approximately 2 bar by regulating A/C compressor also at various engine speeds. However, this applies only within the performance range of the A/C compressor; if the performance limits of the A/C compressor are exceeded. Refer to PRESSURES, CHECKING .
In vehicles with A/C compressor regulator valve -N280-, the pressure is modified on the low pressure side by the valve.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.