An HVACR service shop often has large storage cylinders of f…

An HVACR service shop often has large storage cylinders of frequently used refrigerant available. These service cylinders often have valves on the bottom or are positioned upside-down so the valve appears on the bottom. What are the advantages and reasons for doing this?

After topping off an air-conditioning system that had a low…

After topping off an air-conditioning system that had a low refrigerant charge, you close the cylinder’s hand valve. Explain what safety procedure steps should be followed when moving this cylinder back to your service truck. Note that this refrigerant cylinder weighs over 35 lb.