Abstract: A method of operating a filling system, which is configured for transferring a refrigerant to a refrigeration system and comprises a receiver for collecting a refrigerant-air-mixture, comprises the steps of determining the saturation pressure of the refrigerant at the actual environmental conditions; determining the air pressure of the refrigerant-air-mixture within the receiver; and stopping the operation of the filling system and/or issuing an alarm if the air pressure of the refrigerant-air-mixture within the receiver exceeds the saturation pressure of the refrigerant by more than a predetermined margin or if the change of the air pressure within the refrigerant-air-mixture within the receiver over time exceeds a predetermined margin.

Abstract: In a method for servicing an air conditioning system of a motor vehicle, surrounding areas in which there is a risk of leakage of inflammable coolant is ventilated such that air in the surrounding areas is suctioned out and discharged from the surrounding areas.