A/C Service Station, Discharging
If it is necessary to discharge the A/C Service Station (for example, because contaminated refrigerant was extracted), always replace all filters and dryers. Only remove the filters and dryers from their air-tight packaging immediately before installing them to prevent moisture from entering.
Refrigerant containers filled with contaminated used refrigerant are referred to as "Recycling containers".
Always evacuate recycling cylinders before first charging with refrigerant. Refrigerant cylinders in which there is air must not be filled with refrigerant.
Different refrigerant types must not be mixed together. Refrigerant mixtures cannot be reprocessed but must be disposed of. If there is any doubt about the composition of the contents of the container, the refrigerant recycling company is to be informed accordingly.