Mindray A7 Operating Instructions

Alarm Tests Preoperative Tests
4 - 28 046-004667-00 A7™ Operating Instructions
4.15.2 Test the O
2
Concentration Monitoring and Alarms
NOTE: For A7s with an installed gas module, disconnect the sample tube from
the Y-piece and breathe into it until you see a CO
2
reading on the
screen. Then reconnect the sample tube to the Y-piece. This will activate
the gas module alarms.
1. Set the Auto/Manual switch to Manual and exit the Standby mode.
2. Make sure that the external AG module is installed and its warm-up is completed. Let the
sampling port on the AG module watertrap open to the air directly. Ensure that the sensor
measures approximately 21 % O
2
in room air by verifying the FiO
2
value on the main screen.
3. Select the Alarms softkey and then the Limits tab. Set the FiO
2
low alarm limit to 50 %.
4. Ensure that a FiO
2
Too Low alarm occurs.
5. Set the FiO
2
low alarm limit back to a value less than the measured O
2
value and check that
the alarm cancels.
6. Connect the sampling port on the AG module watertrap to the breathing system.
7. Select the Alarms softkey and then the Limits tab. Set the FiO
2
high alarm limit to 50 %.
8. Connect the manual bag to the manual bag port. Push the O
2
flush button to fill the manual
bag. Ensure that the sensor measures at least 90 % O
2
.
9. Ensure that a FiO
2
Too High alarm occurs.
10. Set the FiO
2
high alarm limit to 100 % and check that the alarm cancels.
4.15.3 Test the Low Minute Volume (MV) Alarm
1. Set the Auto/Manual ventilation switch to Auto.
2. Set the ventilator controls as follows:
• Ventilation mode: select VCV
• Vt: 500 ml
• Rate: 12 bpm
• I:E: 1:2
•Tpause: 10%
•PEEP: OFF
• Plimit: 30 cmH
2
O
3. Select the Alarms softkey and then the Limits tab. Set the MV low alarm limit to 8.0 L/min.
4. Ensure that a low MV alarm occurs after approximately 60 seconds.
5. Select the Alarms softkey and then the Limits tab. Set the MV low alarm limit back to a
value less than the measured MV value and check that the alarm cancels.
4.15.4 Test the Apnea Alarm
1. Connect the manual bag to the manual bag port
2. Set the Auto/Manual ventilation switch to Manual.
3. Turn the APL valve control to set the APL valve to 10 cmH
2
O.
4. Inflate using the O
2
flush button and squeeze the manual bag to check that a complete
breathing cycle occurs on screen.

Mindray A7 Specifications

General

Brand	Mindray
Model	A7
Category	Medical Equipment
Language	English