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. |
| 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 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. |
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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:
Wheel, Balancing, Tire and Wheel Radial and Lateral Run-Out, Checking
Before beginning balancing, the following requirements must
be fulfilled.
The tire pressure must be OK.
The tire profile must not be worn on one side. The tire
profile must be at least 4 mm.
...
Battery with Visual Indicator, Checking
WARNING
Risk of injury. Follow all Warnings and Safety
Precautions. Refer to
→ Chapter „Warnings and Safety Precautions“.
Perform Battery Checks in the Follo ...
Technical requirements
First read and observe the introductory information
and safety warnings
If the vehicle is supplied with a factory-fitted towing bracket
it will already have the necessary technical modifications and meet the statutory
requirements for towing a trailer.
Only use a towing bracket that is appr ...
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Charging Systems not Requiring a Permit