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:

Unlocking the tailgate manually
Fig. 158 In the luggage compartment: manual release for the tailgate First read and observe the introductory information and safety warnings If necessary, fold the backrest of the rear bench seat forwards . Remove items of luggage so that you can reach the tailgate from the insid ...

Introduction
This chapter contains information on the following subjects: → Socket in the vehicle Electrical equipment can be connected to the socket in the vehicle. The devices connected must be in good condition and fault-free. Additional information and warnings: Cigarette lighter Acce ...

Wheel bolts
Fig. 166 Changing a wheel: loosening the wheel bolts Fig. 167 Changing a wheel: anti-theft bolt and adapter First read and observe the introductory information and safety warnings Only the spanner delivered with the vehicle should be used to loosen the wheel bolts. Only loosen the whee ...