BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
- 5. Heating and ventilation
   + 5.1.2. Fan of a heater and conditioner
   - 5.2. Air conditioning system
      5.2.2. Care of air conditioning system
      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. Useful tips


5.2.2. Care of air conditioning system



The highway of air conditioning system is under high pressure. Before full removal of coolant it is forbidden to disconnect any hoses and to remove air conditioning system units. Removal of coolant has to be carried out in car service.

Care of the conditioner comes down to performance of the following procedures:

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

The conditioner should be turned on monthly approximately for 10 min. (especially in the winter).

Insufficient gas station of coolant is the most common cause of unsatisfactory operation of the conditioner. If noticeable temperature increase of air from the conditioner is observed, then check completeness of gas station of coolant.


1. Warm up the engine.
2. Transfer temperature regulator rychazhok 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 has to be listened).
3. Compare temperature of two tubes of the compressor. If temperature наощупь differs considerably, coolant level normal means. Otherwise fill the conditioner.