Setup Menu And Troubleshooting; A- Setup Menu; 1- Oxygen Sensor Calibration; 2- Leak Test - BIO-MED DEVICES Crossvent-2i+ Operation & Service Manual

V . SETUP MENU AND TROUBLESHOOTING

A- SETUP MENU

The SETUP key is only available immediately after powering on the unit and is disabled as soon as any other key except
ALARM QUIET or BATTERY is pressed or if no key is pressed within 30 seconds of powering on the unit. This menu
allows the user to set preferences and perform test and calibration procedures relative to patient use. To access this menu,
turn the ON/OFF switch to ON and press the SETUP key in the lower right corner of the display. The SETUP menu will
be displayed and the alarm LED will light. From this menu, pressing the CAL MENU key can access the CALIBRATION
menu or you can exit back to the MAIN menu by pressing the MAIN MENU key.

1- OXYGEN SENSOR CALIBRATION

This function is used to calibrate the Oxygen sensor cell. Due to the fact that O
once exposed to atmosphere, a calibration should be performed once a month in order to assure optimal accuracy. When the
sensor is consumed and does not calibrate properly, it should be discarded and a new sensor installed and calibrated.
To calibrate:
1. With the O Sensor cable plugged into the rear of the CROSSVENT and the sensor out of the breathing circuit and
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open to atmosphere, press the OXYGEN key.
2. If the sensor has been exposed to a higher level of oxygen than just air in the last 5 minutes or so, then wait 3-4
minutes for the sensor to acclimate and then press the 21% key. Otherwise, you may press the key immediately.
When the 21% is calibrated, it will return to the OXYGEN menu and the 21% will be green. If it is red, the
calibration failed. Either replace the sensor and/or confirm no elevated level of oxygen is present.
3. Place the oxygen sensor tee onto the patient connector on the Crossvent and connect a breathing circuit with a test
lung to the tee.
4. With the O sensor cable still plugged into the ventilator, install the O
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5. Apply 100% oxygen to the ventilator input and set 15 cmH
6. Wait 3-4 minutes and then push the 100% key. When the 100% is calibrated, it will return to the OXYGEN menu
and the 100% key will be green. If it is red, the calibration failed. Either replace the sensor and/or confirm the
oxygen supply concentration is stable.
NOTE: It is important to use the correct reference gases (100 and 21%) when performing this
calibration. A worn out sensor will not calibrate accurately.

2- LEAK TEST

This test may be used to confirm the integrity of the patient circuit and its connections. To perform, proceed as follows:
1. Set the PIP to its maximum setting.
2. Connect the patient circuit with BMD test lung #1021 to the Crossvent.
3. Set the flow control to 10 LPM.
4. Press enter. The Crossvent will pressurize the system and indicate "TESTING", followed by either "PASSED" or
"FAILED" depending on the results. If it fails the test, check the patient circuit and all connections for leaks and
retest.
3- CIRCUIT COMPLIANCE & PNEUMOTACH CHECKOUT

This test may be used to check the circuit compliance and confirm the integrity of the pneumotach.

Perform the following to calculate the compliance factor for a given circuit:
1. Connect the Crossvent to gas source.
2. Connect the patient circuit to the Crossvent.
3. Turn on unit and press Setup.
4. Run leak test as described on the screen.
5. If leak test passes proceed to next step. If leak test fails, check the patient circuit and all connections for leaks and retest. Do
not proceed until leak test passes.
6. Select TV/INSP, verify INSP TIME is highlighted. Select YES when asked if Tidal Volume should be displayed on MAIN
MENU.
7. Remove test lung.
8. Exit to MAIN MENU.
9. Set PIP to its maximum setting.
10. Set mode = A/C.
11. Set rate = 30.
12. Set flow = 3.5.
13. Set Insp Time = 0.35 sec.
14. TV should display 20.
15. Set Flow Trigger = 20.
sensors sometimes change output over time
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sensor into the tee.
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O of PEEP and 5 LPM flow.
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