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:

Opening and closing the electric panorama sliding/tilting glass roof
Fig. 33 In the roof: turn the switch to open and close Fig. 34 In the headliner: push the switch to tilt and pull the switch to close First read and observe the introductory information and safety warnings The rotary switch must be in the basic position ① before the electric panorama ...

Single Wire Seals, Installing
Note Single wire seals prevent the penetration of water and dirt into the contact housing. They are installed, for example, in the engine compartment and must be reinstalled after a repair. Single wire seal is crimpe ...

Two-Part HS Optimum Plus Clear Coat
Definition: Two-Part HS Optimum Plus Clear Coat -LZK 769 K07 A5- Edition 04/2013 Product Description The two-part HS optimum plus clear coat is a VOC compliant high solid cle ...