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A quick check of serviceability of functioning air conditioning system
A quick check of serviceability of functioning air-conditioning system (for example, a minibus Series 901 - for models M-Class check is performed in a similar manner)  | | |
| - Illustrative material for a quick check of serviceability of functioning air conditioning system is represented by the illustration, which includes all the links in the text.
- Drive the vehicle in the shade, open all the windows.
- Turn the selection lever of the temperature regime in the position COLD (Cold).
- Include fresh air mode.
- Fully open the flow sections of the nozzle duct.
- Run the engine at idle.
- Turn the K / B, - the engine speed should increase.
- Including the maximum speed mode of functioning of the fan.
- Through the viewing window of the receiver-drier (2) make sure that there are no signs of bubbling refrigerant.
 | During the initial launch of the system svezhezapravlennoy formation of air bubbles should not cause concern - Wait about 10 minutes - the bubbles will disappear. |
- Carefully review the structural condition of all the components of refrigerator K / V, with a special detector check them for signs of leaks.
- Turn the fan speed mode "1" and using a special meter (1) measure the temperature of the effluent through the central dashboard air vents. After 5 minutes of operation of the temperature supplied to the room air should be within a range of +2 ?� C ÷ + 12 ?� C and the compressor K / V should go into cyclic mode (on-off), otherwise it is necessary to check the condition of the gauge-switch evaporator temperature.
- Turn off the air conditioner and switch off the engine, - a more detailed inspection of the system K / V should be carried out in a workshop of car-care center.
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