Mindray A7 Operating Instructions

A7™ Operating Instructions 046-004667-00 4 - 19
Preoperative Tests Power Failure Alarm Test
4.8 Power Failure Alarm Test
1. Set the system switch to the ON position.
2. Disconnect the AC mains.
3. Ensure that the AC mains indicator and battery charge indicator are extinguished. An
audible alarm should sound and the prompt message Battery in Use should display on the
main screen.
4. Reconnect the AC mains.
5. Ensure that an audible alarm sounds and the AC mains indicator and battery charge
indicator illuminate. The prompt message Battery in Use should not be displayed on the
main screen.
6. Set the system switch to the OFF position.
4.9 Pipeline Tests
NOTE: If the pipeline suply is unavailable,please use the cylinder.
4.9.1 O
2
Pipeline Test
1. Connect the O
2
pipeline supply.
2. Close all cylinder valves if the A7 anesthesia machine is equipped with cylinders.
3. Set the system switch to the ON position.
4. Set the O
2
flow to 6 L/min.
5. Ensure that the O
2
pipeline pressure gauges show 280 to 600 kPa (40 to 87 psi).
6. Disconnect the O
2
pipeline supply.
7. As O
2
pressure decreases, alarms for O
2
Supply Failure and Drive Gas Pressure Low should
occur.
8. Ensure that the O
2
gauge decreases to zero.
4.9.2 N
2
O Pipeline Test
NOTE: When doing the N
2
O pipeline test, connect the O
2
supply first to enable
N
2
O flow control.
NOTE: Different from O
2
pipeline supply, when N
2
O supply is disconnected, no
alarms related to N
2
O pressure occur as N
2
O pressure decreases.
1. Connect the O
2
and N
2
O pipeline supplies.
2. Close all cylinder valves if the A7 anesthesia machine is equipped with cylinders.
3. Set the system switch to the ON position.
4. Select Setup softkey > General tab and set the Fresh Gas Control to Direct Flow.
5. Set the Balance Gas to N
2
O.
6. Set the N
2
O flow to 6 L/min.
7. Check that the N
2
O pipeline pressure gauges show 280 to 600 kPa (40 to 87 psi).
8. Disconnect the N
2
O pipeline supply.
9. As N
2
O pressure decreases, the alarm for “N
2
O Supply Failure” should occur. At the same
time, the N
2
O flow is zero and the O
2
flow is not changed.

Mindray A7 Specifications

General

Brand	Mindray
Model	A7
Category	Medical Equipment
Language	English