Spacelabs BleaseSirius - On;Off Switch Gas Cut off Test; Oxygen Supply Failure Test

70
System Checks
4.7 On/Off Switch Gas Cut Off Test
1. Ensure that the power switch is in the “OFF” position.
2. Ensure that a supply is connected to all pipeline inlets.
3. While the switch is in the “OFF” position, check that no fl ow is
available to the fl owmeter. Turn the O
2
, N
2
O, and Air fl ow control valves
counterclockwise to open the valves. You should see no fl ow.
4. Set the power switch to the “ON” position and ensure fl ow is available to
the fl owmeter by setting a fl ow of 1 L/min on O
2
, N
2
O, and Air.
5. Set the power switch to the “OFF” position and ensure O
2
, N
2
O, and Air
fl ow drops to zero. If the system has EFM, ensure that the display powers
off.
6. Set the power switch in the “ON” position and ensure that fl ow is restored.
4.8 Oxygen Supply Failure Test
1. Set the power switch to the “OFF” position.
2. Ensure that the O
2
, N
2
O, and Air fl ow control valves are turned off by
turning them clockwise.
3. Ensure that a pipeline supply is connected to all pipeline inlets.
4. Set the power switch to the “ON” position.
5. Set a fl ow of 4 L/min for O
2
and N
2
O.
6. Force a failure to the O
2
supply by disconnecting the oxygen supply.
7. Verify that the O
2
failure alarm whistle sounds for a minimum of 8 seconds
and that the N
2
O fl ow drops to zero.
8. If fi tted with an Air fl ow control valve, ensure fl ow is available by turning it
counterclockwise.
9. Reconnect the oxygen supply and ensure that the O
2
and N
2
O fl ows are
restored.