VW Polo manuals

Volkswagen Polo Service & Repair Manual: 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.
Charging systems not requiring a permit are ones used for transferring compressed gases to mobile compressed-gas vessels for internal use only.
Note:
Some A/C service units are charging systems not requiring a permit. When working with such equipment, the refrigerant is not transferred to mobile compressed-gas vessels, but rather into a permanently installed charging cylinder with visible level gauge and float switch.
Recommendation:
It is advisable to use a portable cylinder with visible level gauge and pressure relief valve for surplus refrigerant for internal use.
Observe the different technical regulations for handling and filling compressed gases in other compressed-gas vessels (for example RGS 400, TRGS 402, TRGS 407, TRGS 510, TRBS 3145 / TRGS 725).
   
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. ...

Refrigerant Circuit Repair Information
  WARNING When performing work on refrigerant circuit, observe all generally applicable safety precautions and pressure ...

Other materials:

Air recirculation mode
First read and observe the introductory information and safety warnings General notes There are different types of air recirculation, depending on the level of equipment: Air recirculation mode (heating and fresh air system, air cond ...

Connecting Service Station
  Turn off the ignition. –  Connect the A/C service station to the power supply. –  Connect quick-release coupling adapter to charging hoses of service station (handwheels not screwed in/ha ...

Primary Lock
The primary lock is the locking mechanism of an individual crimp contact in the contact housing. If necessary, housing securing mechanisms (secondary locks) must be released or removed using specified tool before releasing the contacts. ...

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