Audi A3 1997 Manual page 213

- -> The flow direction of the refrigerant in the heat exchanger is not marked at the refrigerant connections
(observe feed and return flow).
- The heat exchanger can be recognised when installed by the metal refrigerant pipes (as opposed to plastic
pipes as in other versions).
- Reduce pressure in cooling system by opening the lock on the refrigerant expansion tank.
- Unclamp and disconnect both refrigerant hoses to heat exchanger of air conditioner (e.g. using special tool
V.A.G 3094).
Notes:
◆ Mark both refrigerant hoses before disconnection.
◆ The refrigerant hoses are to be connected on the correct side. Different connection and flow direction of the
refrigerant dependent on the type of heat exchanger.
◆ -> Arrangement in a vehicle without map-controlled cooling and a heat exchanger without quick release
couplings:
- Refrigerant hose -A-: supply hose from cylinder head
- Refrigerant hose -B-: return hose to water pump
- The flow direction is marked by an arrow at the connection pipes of the heat exchanger (not visible when
installed).
◆ -> Arrangement in a vehicle without map-controlled cooling and a heat exchanger with quick release cou‐
plings:
- Refrigerant hose -A-: supply hose from cylinder head
- Refrigerant hose -B-: return hose to water pump
- The flow direction is marked by the arrows -C- at the connection pipes of the heat exchanger (visible
when installed).
Heating, Air Conditioner - Edition 06.2000
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
11.1 - Removing and installing air conditioner (complete)
Audi A3 1997 ➤
207