Volkswagen Touran Service Manual: Refrigerant Circuit with Restrictor and Reservoir

Volkswagen Touran Service Manual / Heating, Ventilation and Air Conditioning / Refrigerant Circuit General Information / 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.

Refrigerant Circuit with Restrictor and Reservoir

Component	Aggregate state of refrigerant	Pressure bar (psi) positive pressure	Temperature in degrees Celsius (Fahrenheit)
-1- A/C compressor B-side	Gas	up to 20 (290 psi)	up to 70 (158)
-2- Condenser	From gas to vapor to fluid	up to 20 (290 psi)	up to 70 (158)
-3- Restrictor	From fluid to vapor	B-side to 20 (290 psi), A-side greater than 1.5 (21.8 psi)	B-side up to 60 (140 psi), A-side warmer than -4 (25)
-4- Evaporator	From vapor to gas	Greater than 1.5 (21.8 psi)	Warmer than -4 (25)
-5- Reservoir	Gas
-6- A/C compressor A-side	Gas

Pressures on A-side are maintained at approximately 2 bar (29 psi) 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 → Chapter "Pressures, Checking".

Note

In vehicles with A/C Compressor Regulator Valve -N280-, the pressure is modified on the low pressure side by the valve.

Refrigerant Circuit with Expansion Valve

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

Pressure Gauge, Tests and Measurements

Indicators on pressure gauge 1 - Temperature scale for refrigerant R134a CF3CH2F or CH2FCF3. 2 - ...

Other materials:

Volkswagen Touran Owners Manual. Checklist
The following jobs should always be carried out in the given order before working in the engine compartment : Park the vehicle on a level and stable surface. Depress and hold the brake pedal until the engine has stopped. Apply the handbrake Braking, stopping and parking ...

Volkswagen Touran Service Manual. Battery Test, Performing using Battery Tester -VAS6161-
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