Audi Workshop Service and Repair Manuals > A4 Mk1 > Heating, ventilation, air conditioning system | Air conditioner with refrigerant R134a | Air conditioner | General information on refrigerant circuit | Design of refrigerant circuit | Refrigerant circuit with expansion valve and evaporator

Refrigerant circuit with expansion valve and evaporator

1 -	Evaporator

2 -	Expansion valve

3 -	Valve for extraction, charging and measurement

4 -	Sight glass (not fitted with R134a circuits)

5 -	Receiver with dryer

6 -

Condenser

7 -	Air conditioner compressor

Note

Arrows show direction of refrigerant flow.

Audi Workshop Service and Repair Manuals