Datex-Ohmeda Aespire Troubleshooting

Go to the Discrete 1/0 signal menu and check the DPL (Drive Pressure Limit) switch status (Off). Remove the rear subfloor. Connect a pressure test device (included with device setup) to the black inline connector that is in the Exhalation Valve interface cuff tubing (S18 side). Apply 104 +5/ -4 cm H20 (76.5 +3.8/-2.9 mm Hg) to activate the switch. Verify status change on the 1/0 signal screen (On). If problem continues, you will need to replace the S18.

If either sensor reads more than 2 LPM, STOP. This indicates a possible leak in the flow sensor pneumatic circuit. If the pressure is increased further, the ESIB (enhanced sensor interface board) may be damaged.
If the flow measurements on the ADC page stay near zero, the flow sensors are good. If either sensor indicates a flow where there is none, there may be a leak. Try reducing the circuit back to zero. Reverse the flow sensor connections at the ESIB interface panel and repeat test.  
If the problem follows the sensor, discard the sensor. It has a leak. If the problem stays with the same side of the circuit, it is likely the leak is in the tubing, not with the sensor.
If the bleed resistor calibration test fails, check altitude and drive gas settings. Ensure that the breathing circuit gas is exhausting out the scavenging port during the test. A negative finding indicates a massive circuit leak. Check for proper regulator pressure calibration. Ensure that test was conducted properly. Otherwise, failure indicates a calibration problem with the flow valve.

Listed below are several possible causes for a high pressure leak. If all tests are attempted and there is still a leak, contact technical support.

Use a leak detector or Snoop (both included in device assembly) to check for source of leak. Repair or replace defective parts.

Use a leak detector or Snoop to check for source of leak. Make sure tubing connections are tight. Replace valve if defective.

Use a leak detector or Snoop to check for source of leak. Make sure tubing connections are tight. Replace switch if defective.

Make sure cylinder is correctly aligned. verify that tee handles tight.

Use a leak detector or Snoop to check for source of leak. Replace gauge if defective.

Use a leak detector or Snoop to check for source of leak. Replace gasket if defective.

Use a leak detector or Snoop to check for source of leak. Replace valve if defective.

Listed below are several possible causes for a low pressure leak. If all tests are attempted and there is still a leak, contact technical support.

Reset vaporizer if not installed properly. Have vaporizer serviced at vaporizer center if vaporizer leaks.

Check condition of O-ring. Replace if missing or damaged.

Check fill port. Tighten if loose.

Remove cannister. Carefully adjust until cannister is locked in place.

Carefully dust seals and locking surfaces using a dry rag.