VW Touran manuals

Volkswagen Touran Service Manual: Refrigerant Circuit Pressures and Temperatures

  WARNING
When performing work on refrigerant circuit, observe all generally applicable safety precautions and pressure vessel regulations.
The pressures and temperatures in the refrigerant circuit depend on the current operating conditions (such as engine RPM, coolant fan level 1, 2 or 3, engine temperature, A/C compressor on or off) as well as on the effects of outside influences (such as outside temperature, humidity, desired cooling output).
In vehicles with A/C Compressor Regulator Valve -N280-, the pressure is modified on the low pressure side by the valve.
For this reason, values indicated in the following table are valid only as reference points. They are attained at an engine speed of 1,500 to 2,000 RPM and an ambient temperature of 20 C (68 F) after about 20 minutes.
The connections provided for measuring pressure for the manometer battery are located in the vehicle-specific refrigerant circuit.
Refer to → Rep. Gr.87.
At 20 C (68 F) with the engine not running, the pressure in the refrigerant circuit is 4.7 bar (68.17 psi). Refer to → Chapter "Refrigerant R134a Vapor Pressure Table".
   
Electrical Components Not on Refrigerant Circuit
A/C Programmer -J127- This programmer switches the refrigerant flow direction through the second evaporator if the temperature on the cooling fins on the second evap ...

Refrigerant Circuit with Expansion Valve
A-Low pressure side of refrigerant circuit. B-High pressure side of refrigerant circuit.       Component A ...

Other materials:

Checklist
Using seat belts  : Regularly check the condition of all seat belts. Keep the seat belts clean. Never let any foreign bodies and liquids get on to the seat belt, the latch plate or into the slot for the seat belt buckle. Do not trap or damage the ...

Introduction
This chapter contains information on the following subjects:  → Ignition lock    → Starting the engine    → Switching off the engine    → Electronic immobilizer    → Engine pre-heating   Immobilizer display If the vehicle key is not valid or the ...

Connecting Service Station
A/C Service Station, Connecting for Measuring and Testing   Turn off the ignition.   Connect the A/C service station to the power supply.   Connect quick-release coupling adapter to charging hoses o ...

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