VW Polo manuals

Volkswagen Polo Service & Repair Manual: 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:

Using a child seat on the front passenger seat
Fig. 63 On the sun visor on the passenger side: airbag sticker First read and observe the introductory information and safety warnings Not all countries allow you to transport children on the front passenger seat. Not every child seat is suitable for use on the front passenger seat. Volkswa ...

Washing the vehicle
First read and observe the introductory information and safety warningsThe longer substances such as insects, bird droppings, resinous tree sap, road dirt, industrial deposits, tar, soot or road salt and other corrosive materials remain on the vehicle, the more damage they do to the paintwork. ...

Protecting
  Caution Missing protection leads to the electrical system damage.   Note All threaded connections must be tightened to the specified torque. ...

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