VW Polo manuals

Volkswagen Polo Service & Repair Manual: Extraction System Group Classifications

At this time, A/C service units for extracting, cleaning and filling refrigerant for motor vehicle A/C systems are available from various manufacturers.
Group 3:
Mobile extraction and charging systems for filling compressed-gas vessels permanently connected to the system.
The refrigerant or refrigerant/oil mixture is transferred to compressed gas vessels which are permanently connected to the mobile systems. In accordance with 3 Para. 5 No. 3 of pressure vessel regulations, compressed-gas vessels are classified as pressure vessels in this case.
The charging systems require:
no permit
no expert testing as the gas is transferred to compressed-gas vessels which are classed as being pressure vessels. (Systems used for transfer from these pressure vessels to compressed-gas vessels for supplying to third parties do require a permit and are subject to mandatory testing).
  Note
The A/C service and recycling units used in motor vehicle workshops are extraction and charging systems not requiring a permit (Group “3”) but which are only to be operated by qualified personnel. Instructions for unit operation and maintenance can be found in the relevant manufacturer's documentation.
   
A/C Service and Recycling Units
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Charging Systems not Requiring a Permit
At this time, A/C service units for extracting, cleaning and filling refrigerant for motor vehicle A/C systems are available from various manufacturers. ...

Other materials:

Welding and Soldering on Refrigeration Systems
Before performing welding or soldering work on vehicles near the air conditioning system components, extract the refrigerant and remove the residue by flushing with compressed air and nitrogen. The products of refrigerant decomposition d ...

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 ...

Stowage compartment on the front passenger side
Fig. 97 Stowage compartment on the front passenger side Fig. 98 Open stowage compartment on the front passenger side First read and observe the introductory information and safety warnings Opening and closing the stowage compartment To open, pull up the opening lever . To close ...

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