A7™ Operating Instructions 046-004667-00 4 - 11
Preoperative Tests Leak and Compliance Tests
Automatic Circuit Leakage: Fail: Fresh gas
flow detected
Compliance Test: Fail
Example:
Fresh gas is detected. Approximate threshold for fresh gas
detection is 0.15 L/min of gas flow.
Adjust all flowmeters to zero.
Select Retry to repeat the test.
Automatic Circuit Leakage: Fail
Compliance Test: Fail
Example:
Leak rate >1000 ml/min.
Fresh gas is not detected.
Follow on-screen instructions to troubleshoot the
problem.
or
Select Manual Only to place the device in manual
ventilation mode only. The following low priority alarm
will be displayed on the main screen: Auto Ventilation
Disabled – Leak Test Failed:
WARNING: Selecting the Manual
Only button will disable
automatic ventilation.
MACHINE NON-FUNCTIONAL
Automatic Circuit Leakage: Pass
Compliance Test: XX.X mL/cmH
2
O
Safety Valve Control: Fail
Example:
Safety valve control test or pressure verification test failed.
Select Retry to repeat the Automatic Circuit Leak Test &
Compliance test.
or
Contact service if this error condition persists.
NOTE: The Service Access
button is only available
to Mindray-authorized
service personnel and
requires a service
password.
RESULTS COMMENTS/OPTIONS
TABLE 4-3 Automatic Circuit Leak and Compliance Test Results