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

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Other materials:

Pedals
Fig. 108 Pedals in vehicles with a manual gearbox: ① accelerator, ② brake pedal, ③ clutch pedal Fig. 109 Pedals in vehicles with an automatic gearbox: ① accelerator, ② brake pedal First read and observe the introductory information and safety warnings The operation and freedom ...

Ashtray in the drink holder
First read and observe the introductory information and safety warnings Fig. 104 Removable ashtray To use, place the removable ashtray in one of the drink holders in the front centre console or in the rear centre console . Opening and closing the ashtray To open, lift the ashtray cove ...

Cruise Control System, Activating and Deactivating
General Description Cruise control system functions are controlled by the engine control module. – Cruise control system can be activated/deactivated. Refer to → Chapter „Cruise Control Sy ...