Volkswagen Polo Service & Repair Manual: Refrigerant Circuit, Flushing

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / Refrigerant Circuit, Removing Contaminants / Refrigerant Circuit, Flushing with Compressed Air and Nitrogen / Refrigerant Circuit, Flushing

Note

For vehicles in which no adapters fit on to the refrigerant pipes, for example, a blower pistol with rubber mouthpiece is to be used to blow through individual components. Special care must be taken not to damage the connections (crushing or scratching).

Evaporator is to be flushed via the connection for low-pressure pipe (large diameter) after removing expansion valve or removing restrictor.

Always flush components in direction opposite of refrigerant flow direction.

Check expansion valve and replace if dirty or corroded.

If there are dark, sticky deposits in the components that cannot be removed with compressed air, replace these components.

Thin, light grey deposits on the insides of refrigerant pipes do not impair the function of the components.

After flushing, always replace receiver/dryer or reservoir and restrictor. Replace dryer cartridge or dryer on condensers with attached dryer.

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) ar ...

Refrigerant Circuit, Flushing (Cleaning) with Refrigerant R134a

...

Other materials:

Front view
Fig. 2 Overview of the front of the vehicle Key for : Rain/light sensor on the mirror base Windscreen Windscreen wiper Bonnet Bonnet release lever Headlights Headlight washer system Mounting for the front towing eye behind a cover Front number plate holder F ...

Contents of the breakdown set
Fig. 171 The breakdown set First read and observe the introductory information and safety warnings The breakdown set is located underneath the floor covering in the luggage compartment. It includes the following components : Valve core extractor Sticker with the maximum permitted s ...

Introduction
This chapter contains information on the following subjects: → Seat heating Additional information and warnings: Adjusting the seat position Seat belts Airbag system Child seats (accessories) Exterior mirrors Luggage compartment WARNING Incorrec ...