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Pouring refrigerant into reservoir (charging cylinder or storage vessel) of air conditioner service station > < Charging refrigerant circuit with air conditioner service station

A4 Mk2

Starting up air conditioner after charging
Starting up air conditioner after charging
  Note
t  If it has been removed, give the mechanically driven air conditioner compressor approx. 10 turns by hand prior to initial start-up (on or after installation, e.g. before fitting the belt) to prevent damage caused by fluid lock when first switched on (any oil in the air conditioner compressor cylinder is forced out by the cranking action).
t  If it has been removed, the electrically driven air conditioner compressor is to be started up, prior to initial commissioning of the air conditioner and following charging, by way of the „Basic setting, compressor run-in“ function of the Guided Fault Finding routine → Vehicle diagnostic tester, „Guided Fault Finding“ function for air conditioner and battery regulation. This guards the air conditioner compressor against damage caused for example by fluid lock when first switched on (any oil in the combustion chamber of the air conditioner compressor is forced out).
t  The mechanically driven air conditioner compressor is driven via a belt or shaft by the engine. The electrically driven air conditioner compressor is driven via an electric motor attached directly to the air conditioner compressor (e.g. on vehicles with hybrid drive).
Start-up of air conditioner with mechanically driven air conditioner compressor
   
–  Start the engine with the air conditioner compressor switched off (version with magnetic clutch). 
–  Set the air conditioner compressor to minimum output, "Econ" or A/C off mode (version with no magnetic clutch with a regulating valve).
–  Wait for the idling speed to stabilize.
–  Switch on the air conditioner compressor and operate the system for at least 2 minutes at idling speed.
–  If necessary, check the pressures in the refrigerant circuit with the air conditioner service station.
–  Switch off engine.
–  Screw out the handwheel on the quick-release coupling adapter.
–  Detach the charging hoses from the refrigerant circuit.
–  Screw the sealing caps back on.
Start-up of air conditioner with electrically driven air conditioner compressor
–  The air conditioner compressor is to be started up by way of the Guided Fault Finding „Basic setting, compressor run-in“ function → Vehicle diagnostic tester function „Guided Fault Finding“ for air conditioner and battery control
–  If necessary, check the pressures in the refrigerant circuit with the air conditioner service station on completion of basic setting.
–  Screw out the handwheel on the quick-release coupling adapter.
–  Detach the charging hoses from the refrigerant circuit.
–  Screw the sealing caps back on.
  N87-0528

Pouring refrigerant into reservoir (charging cylinder or storage vessel) of air conditioner service station > < Charging refrigerant circuit with air conditioner service station