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:

Coolant Fan Control Module -J293
Note There are different construction styles. This control module switches on and off the A/C clutch and therefore the A/C compressor. It switches the coolant fan and calculates the pressu ...

Sun visors
Fig. 70 Sun visor First read and observe the introductory information and safety warnings Various positions for the driver and front passenger sun visors: Folded down over the windscreen. Pulled out of the bracket and swung over towards the door . Vanity mirror light There is a v ...

Locking and unlocking the vehicle from the outside
Fig. 23 Buttons on the vehicle key Fig. 24 Mechanical vehicle key First read and observe the introductory information and safety warnings Function Buttons to be used in the vehicle key Action to be followed with key in the lock cylinder or Unlockin ...