After Charging A/C System And Before Activating A/C System
WARNING: This page is about a different car, the 2014 Volkswagen Touareg, 2013 Volkswagen Touareg, 2012 Volkswagen Touareg, and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.
-- After installing a new A/C compressor or adding fresh refrigerant oil (for example, after blowing through the refrigerant circuit), turn the A/C compressor ribbed belt pulley 10 rotations by hand before starting the engine. This prevents damage to the A/C compressor.
-- For 5-cylinder and 10-cylinder diesel engines, rotate A/C compressor 10 rotations by hand at overload protection. Then install A/C compressor. This prevents damage to the A/C compressor.
-- Start the engine with the A/C turned off (A/C Clutch -N25- and A/C Compressor Regulator Valve -N280- are not actuated).
-- Following engine idling speed stabilization, switch on A/C compressor and run it for at least 10 minutes at idling speed with maximum cooling output.