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:

Checklist
Always carry out the following actions for changing a bulb in the given order : Park the vehicle on a firm and level surface at a safe distance from the flow of traffic. Apply the handbrake firmly Braking, stopping and parking Brakes Parking . Turn the light switch to positi ...

Checklist
Please note the following for the cleaning and maintenance of the seat covers : Before getting into the vehicle, close all Velcro fasteners that could touch the cloth seat covers and fabric trims. Open Velcro fasteners can cause damage to cloth seat covers and fabric trims. Avoid ...

Operating ParkPilot
Fig. 120 In the rear bumper: ParkPilot ultrasound sensors First read and observe the introductory information and safety warnings The ParkPilot uses ultraound sensors to determine the distance between the rear bumper and an obstacle. There are 4 ultrasound sensors in the rear bumper   ...

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