| Classification of extraction systems in groups |
| Portable extraction and charging devices linking the air conditioning system to a fixed gas pressure vessel. |
| The fixed gas pressure vessel 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 pressure vessel regulations, in this case the terms "gas pressure vessel" and "pressure vessel" are equivalent. |
| Charging devices require: |
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| no checking by an authorised official, since the gas is held in the gas pressure vessel, which is equivalent to a pressure vessel. (Devices for filling refrigerant from these pressure vessels into gas pressure vessel to be dispensed to another gas pressure vessel 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. |
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