Air conditioning system with refrigerant R134a

Connecting air conditioner service station for measuring and checking

~1min read

Depending on the type of equipment chosen, there may be variations in the required procedure; therefore always follow the user's manual for the equipment being used. Note Always follow the procedure described in the user's manual for your air conditioner service station -VAS 6007A- (or later model). The charging hoses must only be connected according to the following work procedure to prevent air or moisture from entering the refrigerant circuit:
  • Switch off ignition.
  • Connect air conditioner service station to power supply.
  • Unscrew sealing caps from service station connections or from connections with valve (see vehicle-specific refrigerant circuit).

→ Rep. gr.87

  • Evacuate charging hose.
Note Connect the charging hose to the service connections of the refrigerant circuit using quick-release couplings.
Caution Do not open the valves in the low- or high-pressure sides when the engine is running. Otherwise, if the air conditioning is switched on, the air conditioner compressor or the air conditioner service station may be destroyed by a “short circuit” between the high- and low-pressure sides of the refrigerant circuit.
  • Turn hand wheel into quick-release coupling adapter until the valve in the service connection is definitely open (observe pressure gauge; do not over-tighten valve).
  • Start the engine and perform the planned tests and measurements.
  • Compare determined values with specifications → Chapter.
  • Before disconnecting the quick-release coupling, close it by turning out the handwheel.

Test yourself

A quick Volkswagen Golf quiz: every answer comes with an explanation and a link to the manual page.