A7™ Service Manual 046-006272-00 3 - 49
Periodic Maintenance Vaporizer Accuracy Test
3.15 Vaporizer Accuracy Test
1. Connect the sampling tee of the Gas analyzer to the ACGO port.
2. Use a breathing hose to connect the output of the sampling tee to the scavenger.
FIGURE 3-43 Vaporizer Accuracy Test Setup
3. Verify the scavenger is connected at the wall and the floater is between MIN and MAX.
4. Mount the vaporizers and fill with anesthetic agent (if necessary).
NOTE: Do not overfill by filling past the indicator line on the vaporizer.
5. Turn on the unit.
6. Set the machine to ACGO mode.
7. Test the vaporizer accuracy per the manufacturer's instructions.
8. Test each vaporizer in turn.
9. Test any vaporizer on the Vaporizer Storage Mount.
10. Remove the measuring equipment.
11. Reconnect the Waste Gas Scavenger Hose.
NOTE: The deviation of the vaporizers due to change of barometric pressure
(high altitude) and the deviation of the Riken F-21 gas analyzer are the
same. When testing the Vaporizers using the Riken F-21 gas analyzer,
the altitude can be ignored as the deviations cancel each other out. If
using a different gas analyzer, check the effect of change of barometric
pressure prior to use when working in high elevations.
3.16 Suction Regulator Test
1. Connect the pipeline suction to the A.7.
2. Plug the tube to the patient.
3. Set the selector knob to FULL mode.
4. Check that the gauge shows some negative pressure.
5. Set the selector knob to OFF mode and verify the pointer on the suction gauge should come to
the zero.
6. Set the selector knob to REG mode and turn off the suction regulator knob in clockwise
direction.
7. Then turn on the suction regulator knob in counterclockwise direction.
8. Verify the pressure on the suction gauge gradully increase and comes to the pressure that was
obtained in full mode.
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