Section 3
Daily Checkout
Emergency
Ventilation Equipment
Verification
*7. Verify that backup ventilation equipment is available and
functional.
High Pressure
System Verification
*8. Check the oxygen cylinder supplies.
A. Disconnect all pipeline gas supply hoses and drain the
system.
B. Close the oxygen cylinder valve and remove the cylinder
from the yoke. Verify that there is one cylinder gasket and
there are two index pins. Verify that the cylinder matches
the yoke label. Place the cylinder back in its yoke.
C. Open an oxygen cylinder and check the cylinder pressure
gauge. A full oxygen cylinder registers about 1900 psi.
Replace any cylinder with pressure less than 1000 psi. To
check for a high pressure leak, close the cylinder and
observe the cylinder pressure gauge for a prominent
decrease in the pressure.
D. If the machine is equipped with dual oxygen yokes, repeat
these procedures for the other cylinder yoke.
*9. Check the nitrous oxide cylinder supplies.
A. Close the nitrous oxide cylinder valve and remove the
cylinder from the yoke. Verify that there is one cylinder
gasket and there are two index pins. Verify that the
cylinder matches the yoke label. Place the cylinder back in
its yoke.
B. Open the nitrous oxide flow control valve until the nitrous
oxide pipeline and cylinder pressure gauges indicate zero
pressure. Open a nitrous oxide cylinder and check the
cylinder pressure gauge. A full nitrous oxide cylinder
registers about 745 psi. Replace any cylinder with a
pressure less than 600 psi. To check for a high pressure
leak, close the cylinder and observe the cylinder pressure
gauge for a prominent decrease in the pressure.
C. If the machine is equipped with dual nitrous oxide cylinder
yokes, repeat these procedures for the other cylinder yoke.
3-2
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