Volkswagen Polo Service & Repair Manual: Leaks or Internal Damage, for Example Noises or No Output

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / Components, Replacing / A/C Compressor, Replacing / Leaks or Internal Damage, for Example Noises or No Output

Note

For vehicles with an electrically-driven A/C compressor, de-energize the high voltage system before removing the A/C compressor. Refer to → Electrical System Hybrid; Rep. Gr.93.

–	Discharge the refrigerant circuit.

–	Remove the A/C compressor.

Note

In the case of internal damage (on A/C compressor), flush refrigerant circuit with refrigerant R134a. Refer to → Chapter „Refrigerant Circuit, Flushing (Cleaning) with Refrigerant R134a“.

If a different A/C compressor is installed with a different refrigerant oil, the refrigerant circuit is to be flushed with refrigerant R134a. Refer to → Chapter „Refrigerant Circuit, Flushing (Cleaning) with Refrigerant R134a“.

–	Replace receiver/dryer/dryer cartridge and expansion valve or reservoir and restrictor.

–	If a leak is present, check the expansion valve for debris or corrosion and replace if necessary.

–	Assemble, evacuate and charge the refrigerant circuit.

Flushing Not Necessary

Note For vehicles with an electrically-driven A/C compressor, de-energize the high voltage system before removing the A/C compressor. Refer to &# ...

Receiver/Dryer or Reservoir and Restrictor, Replacing

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Other materials:

General Information
In order to be able to force moisture and other contaminants out of refrigerant circuit, compressed air and nitrogen (to force moisture out of refrigerant circuit) are to be used. For the most part, blowing through the refrigerant circui ...

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Information on the air conditioning system
First read and observe the introductory information and safety warnings The cooling system for the vehicle interior only works when the engine is running and the blower is switched on. The air conditioning system operates most effectively with the windows and the electric panorama sliding ...