E30 series BMW 3

since 1983-1994 of release

Repair and car operation

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
- 5. Heating and ventilation
   + 5.1.2. Heater and conditioner fan
   - 5.2. Central air
      5.2.2. Care of central air
      5.2.3. Compressor
      5.2.4. Condenser
      5.2.5. Moisture separator
      5.2.6. Conditioner evaporator
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Good advice


5.2.2. Care of central air



The highway of central air is under a high pressure. Before complete removal of a coolant it is forbidden to disconnect any hoses and to remove central air units. Removal of a coolant should be carried out in car-care center.

Care of the conditioner is reduced to performance of the following procedures:

 – check of a condition and tension of a belt of the compressor;
 – check of a condition of hoses and tubes (the highway on to disunite!);
 – cleaning of intercostal spaces of the condenser;
 – check of filling of system by a coolant.

The conditioner should be included monthly approximately on 10 mines (especially in the winter).

The most widespread reason of unsatisfactory operation of the conditioner is insufficient filling of a coolant. If appreciable temperature increase of air from the conditioner is observed, check completeness of filling of a coolant.


1. Warm up the engine.
2. Transfer a rychazhok of a regulator of temperature to the situation corresponding to the lowest temperature, establish the highest speed of the fan, open doors and turn on the compressor (click of the electromagnetic coupling should be listened).
3. Compare temperature of two tubes of the compressor. If the temperature наощупь differs considerably, coolant level the normal means. Otherwise fill the conditioner.