VW Touran manuals

Volkswagen Touran Service Manual: Refrigerant Circuit with Expansion Valve

A-Low pressure side of refrigerant circuit.
B-High pressure side of refrigerant circuit.

Refrigerant Circuit with Expansion Valve

     
Component Aggregate State of Refrigerant Pressure bar (psi) Positive Pressure Temperature in Degrees Celsius (Fahrenheit)
-1- Evaporator, from input to output Vapor Approximately 1.2 (17.4) → Note Approximately -7 (20) → Note
    (Approximately 1.8 (26.1)) → Note Approximately -1 (30) → Note
-2- A/C compressor A-side Gas Approximately 1.2 (17.4) → Note Approximately -1 (30)
    (Approximately 1.8 (26.1)) → Note Approximately -1 (30) → Note
-3- A/C compressor B-side Gas Approximately 14 (203.1) Approximately 65 (149)
-4- Condenser Gas, vapor, fluid Approximately 14 (203.1) Approximately 55 (131) at outlet
-5- Receiver Fluid Approximately 14 (203.1) Approximately 55 (131)
-6- Extraction and filling valve, B-side Fluid Approximately 14 (203.1) Approximately 55 (131)
-7- Expansion valve Fluid, released as vapor Approximately 14 (203.1) Approximately 55 (131), reduced to -7 (20)
-8- Extraction and filling valve, A-side Gas Approximately 1.2 (17.4) → Note Approximately -7 (20) → Note
    (Approximately 1.8 (26.1)) → Note Approximately -1 (30) → Note
1)  Pressure in refrigerant circuits is maintained at approximately 2 bar (29 psi), regulated by A/C compressor, even though heat transfer changes and engine speeds vary. However, this applies only within the performance range of the A/C compressor; if the performance limits of the A/C compressor are exceeded, the pressure increases. Refer to → Chapter "Pressures, Checking".
2)  Within the control range of the A/C compressor, temperature in the refrigerant circuits is maintained, regulated by A/C compressor, even though heat transfer changes and engine speeds vary. However, this applies only within the performance range of the A/C compressor; if the performance limits of the A/C compressor are exceeded, the temperature increases. Refer to → Chapter "Pressures, Checking".
3)  Measured values for A/C systems with two evaporators
  Note
A/C compressors which do not regulate their performance are switched off by the respective control module via the A/C Compressor Regulator Valve -N280- at an evaporator temperature below 0 C (32 F).
In vehicles with A/C Compressor Regulator Valve -N280-, the pressure is modified on the low pressure side by the valve.
   
Refrigerant Circuit Pressures and Temperatures
  WARNING When performing work on refrigerant circuit, observe all generally applicable safety precautions and pressure ...

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.   &nbs ...

Other materials:

Volkswagen Touran Owners Manual. Checklist
To ensure your own safety and the safety of your passengers, observe the following points in the order given  : Find a flat and firm surface suitable for lifting the vehicle. Stop the engine, select a gear of the manual gearbox or move the selector lever of the automatic gearbox ...

Volkswagen Touran Owners Manual. Notes on towing
First read and observe the introductory information and safety warnings Tow-rope or tow-bar It is easier and safer to tow a vehicle with a tow-bar. Only use a tow-rope if you do not have a tow-bar. A tow-rope should be slightly elastic to reduce the loading on both vehicles. It is advisab ...

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