| Pressures and temperatures in the refrigerant circuit |
WARNING | When working on the refrigerant circuit, observe generally applicable safety rules and the pressurised container regulations. |
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| The pressures and temperatures in the refrigerant circuit depend on the momentary operating conditions (e.g. engine speed, speed 1, 2, or 3 of radiator fan, engine temperature, whether air conditioner compressor is on or off) as well as environmental influences (e.g. ambient temperature, humidity, required cooling output). |
| In vehicles with air conditioner compressor regulating valve -N280-, the pressure on the low-pressure side is varied by activating the valve. |
| Therefore, the values given in the following table may only be considered guidelines. They occur at an engine speed of 1500 to 2000 rpm and an ambient temperature of 20° C after about 20 minutes. |
| The locations of connections provided for pressure measurements can be found in the vehicle-specific coolant circuits. |
| At 20 °C and with the engine stopped, the refrigerant circuit will adjust itself to a pressure of 4.7 bar positive pressure → Chapter. |
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