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Home >> Audi >> 2023 >> A5 Quattro Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 33 (Air Conditioning (Refrigerant R134A Servicing (Safety Precautions)) (Coupe)) >> 87 Air Conditioning >> A/C System, General Information >> After Charging A/C System And Before Activating A/C System

After Charging A/C System And Before Activating A/C System

WARNING: This page is about a different variant/trim than selected.

Mechanically Driven A/C Compressor

After attaching the A/C compressor to the engine (before positioning the belt or installing the input shaft). Refer to A/C SYSTEM, OPERATING AFTER CHARGING  and A/C Compressor .

-- Turn the A/C compressor approximately 10 turns by hand via the clutch plate or belt pulley on the A/C clutch.

After charging. Refer to A/C SYSTEM, OPERATING AFTER CHARGING .

-- Start the engine with the A/C system turned off (A/C Clutch -N25- and A/C Compressor Regulator Valve -N280- are not actuated).

-- After the engine idle speed stabilizes, switch on the A/C compressor and operate for at least 10 minutes at idle speed with maximum cooling output.

Electrically-Driven A/C Compressor

-- First start the electrically-driven A/C compressor after charging the refrigerant circuit via the "compressor cut-in" function of the basic setting. Refer to A/C SYSTEM, OPERATING AFTER CHARGING  and the Vehicle Diagnostic Tester in Guided Fault Finding Function for A/C System and Battery Regulation.