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System Checks
4.5 Cylinder Leak Test
1. Ensure that all fl ow control valves are turned off.
2. Ensure that the power switch is in the “OFF” position.
3. Ensure that no pipeline supply is connected to the pipeline inlets.
4. Fit a full O
2
cylinder (at least 1000 psi) to the O
2
yoke.
5. Turn on the cylinder and ensure that the appropriate gauge registers
correct.
6. Close the cylinder and verify that the gauge does not drop more than
150 psi (345 kPa) over two minutes.
7. Remove the cylinder and verify the gauge reads zero.
8. Repeat steps 1-7, if two O
2
yokes are fi tted.
9. Repeat steps 1-7, if an air yoke is fi tted. Use a full air cylinder (at least
1000 psi).
10. Fit a full N
2
O cylinder (at least 700 psi) to the N
2
O yoke.
11. Turn on the cylinder and ensure the appropriate gauge registers correct.
12. Close the cylinder and verify that the gauge does not drop more than 150
psi (345kPa) over two minutes.
13. Remove the N
2
O cylinder and verify the gauge reads zero.
14. Repeat steps 10-13, if two N
2
O yokes are fi tted.
4.6 Regulator Output Test
1. Remove the lower inspection cover.
2. Ensure that the power switch is in the “OFF” position.
3. Fit a full cylinder to the yoke of the appropriate regulator being tested.
(O
2
/ Air: at least 1000 psi and N
2
O: at least 700 psi).
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