Charging Systems Not Requiring A Permit

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At this time, service units for extracting, cleaning and filling refrigerant for motor vehicle A/C systems are available on the market from various manufacturers.

Only certain service stations (with appropriate auxiliary device and different adapters if necessary) can be used for cleaning (flushing with refrigerant R134a) the refrigerant circuit. Refer to REFRIGERANT CIRCUIT, CLEANING (FLUSHING) WITH REFRIGERANT R134A .

WARNING:

When performing work on refrigerant circuit or when handling refrigerant observe all generally applicable safety precautions and pressure container regulations.

Charging systems not requiring a permit are ones used for transferring compressed gases to mobile compressed-gas containers for internal use only.

NOTE:

Some service units are charging systems not requiring a permit. When working with such equipment, the refrigerant is not transferred to mobile compressed-gas containers, 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.

Attention must be paid to technical regulations for compressed gases (for example TRGS 400, TRGS 402, TRGS 407 TRGS 510 TRGS 725/TRBS3145) when transferring compressed gases to other compressed-gas containers.