Bayer HealthCare Rapidlab 800 - Manual (Page 263)

3Ć91 Maintaining the System
a. Using a valve wrench, close the gas tank by turning the valve stem fully
clockwise.
WARNING
Do not remove the yoke screw before releasing the gas from the
regulator. Gas under pressure can cause bodily injury and property damage.
b. Disconnect the gas regulator from the gas tank by unscrewing the yoke
screw. You may hear a short spurt of gas. Remove the regulator.
c. Visually inspect the gas line for cracks and leaks.
d. Remove the gas tank to a well-ventilated, open area.
e. Inspect the gas outlet and ensure that it is free of dirt or other foreign
matter.
WARNING
Do not come in contact with the gas stream. Gas under pressure
can cause bodily injury and property damage.
f. To avoid injury or damage, position the valve outlet so that it is facing
away from your face, body, and loose objects.
WARNING
Do not turn the valve stem more than is necessary to hear gas
exiting the valve stem. Gas under pressure can cause bodily injury and
property damage.
g. Using a wrench, release the contents of the gas tank by slowly turning the
valve stem counterclockwise until you hear gas exiting the valve stem.
h. When the gas tank is completely vented and no more gas is heard exiting
the valve, open the valve stem completely to ensure all of the contents is
vented.
i. Label the container Empty and dispose of the tank according to your
laboratory protocol.