30
5.3 Mains failure alarm test
1. Turn power switch to “ ”, stand-by interface appears after a while.
2. After operating for 5 minutes, pull out power cord.
3. Make sure that power off failure alarm occurs , which has the following characteristics:
Alarm sound;
“!MAINSFAILED” message displays on the alarms information display area;
4. Connect power cord again.
5. Make sure the alarm eliminate.
5.4 Test humidifier performance
Test about humidifier refer to relative instructions for use.
5.5 Alarm test
1. High pressure alarm test
Set Vt to 500, upper limit of Paw to 20cmH
2
O. Press standby key to ventilate, and then press
the reservoir bag to make the pressure increasing in the patient circuit, when Paw more than
20cmH
2
O, the high pressure alarm generated, and the ventilator switches to expiration phase
immediately.
2. Low pressure alarm test
Set pressure low limit to 5 cmH2O,take away reservoir bag, low pressure alarm occurs.
3. Circuit occlusion alarm test
After high pressure alarm occurs, continue to press the reservoir bag, when high pressure
alarm lasting more than 15 seconds, the continuous high pressure alarm occurs.
4. low tidal minute volume test
Set the low limit of MV to 6, and adjust Vt to 200ml, Rate to 20 ,one minute later, low tidal
minute volume alarm occurs.
5. High tidal minute volume test
Set the upper limit of MV to 6, and adjust Vt to 400ml, Rate to 20 ,one minute later, high tidal
minute volume alarm occurs.
6. low oxygen concentration alarm test
Setup the lower limit of oxygen concentration to 50%, then use air only for ventilating, 10
breath cycles later, the low FiO
2
alarm appears.
7. High oxygen concentration alarm test
Setup the higher limit of oxygen concentration to 50%, then use oxygen only for ventilating, 10
breath cycles later, the high FiO
2
alarm appears.
8. Apnea alarm test
Set ventilation mode to SPONT, the apnea alarm occurs after a while, and the ventilator turns
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