When filling a charging cylinder with aregulated refrigerant;Therefrigerant vaporthat is vented off the top of the cylinder must be recovered.If after installing a fitting for the purpose of recovering theappliances refrigerant,you find that the system pressure is0 psig;Recovery is not required.When transporting cylinders contain used refrigerant?TheDOT mandatesthat DOT Classification Tags, such as those shown above, be attached to cylinders that contain used refrigerant.DOT classificationtags show the substance's level of hazard and are arranged according to class.For instance, Class 2, which is gases, would include refrigerant gases.What must be done before shipping any used refrigerant in a cylinder?Check that thecylinder complieswithDOTrequirements before sending any old refrigerant cylinders, fill out the shipping paperwork with the quantity of each refrigerant, and clearly mark the cylinder with the kind and amount of refrigerant.Transportingcylindersshould be done standing up.Learn more aboutrefrigerant of cylinderbrainly.com/question/10054719#SPJ4...

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