Mindray A7 Service Manual

A7™ Service Manual 046-006272-00 3 - 43
Periodic Maintenance Performance Verification
3.11.6 Airway Disconnect Alarm Test
1. While the ventilator is running, disconnect the expiratory limb from the Expiratory Port on the
Breathing System.
2. Verify the following airway pressure disconnect alarm signals activate:
• Paw Too Low message appears on the screen.
• An alarm tone sounds.
3. Reconnect the expiratory limb to the expiratory port.
3.11.7 PCV Adult Ventilation Mode Test
1. Set the O2 flow to 3 L/min and set the N2O and AIR flow rates to minimum flow.
2. Set the ventilator controls to:
3. Press Set Mode button to begin ventilation.
4. Verify the Peak Pressure reading of the display is within ±2 cmH2O of the Peak Pressure
measured with the Vent Tester.
5. Verify that the pressure waveform, Tidal Volume, Resp. Rate and minute volume values appear
on the screen.
6. Verify that the PEAK Value reaches 15 ±2.5 cmH2O within five breaths from the start of
ventilation.
Ventilator Controls Ventilator Settings
Ventilation Mode PCV
VtG Off
Pinsp 15
Rate 8
I:E 1:2
PEEP Off
Tslope 0.2
PlimVG NA

Mindray A7 Specifications

General

Brand	Mindray
Model	A7
Category	Medical Equipment
Language	English