VW Golf manuals

Volkswagen Golf Service & Repair Manual: Classification of extraction and charging devices in groups

Group 3:
Portable extraction and charging devices linking the air conditioning system to a fixed compressed gas container.
The fixed compressed gas container is charged with refrigerant or refrigerant/oil mixture. The portable extraction and charging device is then permanently attached to the pressure vessel. In accordance with § 3 section 5 no. 3 of the Regulations for Pressure Tanks, in this case the terms "compressed gas container" and "pressure tank" are equivalent.
Charging devices require:
no permit
no checking by an authorised official, since the gas is held in the compressed gas container, which is equivalent to a pressure tank. (Devices for filling refrigerant from these pressure tanks into compressed gas containers that are intended for third-party use, in turn, require licensing and they are subject to checking by an authorised official.)
  Note
The air conditioner service and recycling devices used in vehicle workshops are Group 3 extraction and charging devices which do not require a permit, but which can be operated only by skilled staff. Refer to the manufacturer's documentation for instructions on operating and maintaining these devices.
   
Air conditioner service and recycling equipment
At present, various manufacturers offer air conditioner service devices on the market for evacuating, cleaning and charging refrigerant in vehicle air conditioning sy ...

Charging devices that do not require a permit
Charging devices that do not require a permit are mobile charging devices into which pressurised gases are charged into compressed gas containers for exclusive use of ...

Other materials:

Warning lamp
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Charge factor
There must be space both for liquid and vapour in a container. As the temperature rises, the liquid expands. The space occupied by the vapour becomes smaller. Eventually, there will only be liquid in the container. After that time, even a small increase ...

Texture additive
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