GE B30 Technical Reference Manual page 95

22. Leak test
Check the NIBP tubing system for leakages.
Select Calibrations from the NIBP service menu.
Connect the pressure manometer to the NIBP module cuff connector. Start the active leak
test from the menu by pressing the ComWheel. The module pumps a pressure of about
290 mmHg and then the pump stops. The max pressure in Adult mode is about 290
mmHg, but in Infant mode only 140mmHg.
Wait for 15 seconds for the pressure to stabilize then check that the pressure does not
drop more than 6 mmHg per one minute. Release the pressure by pressing the
ComWheel once more.
23. Calibration check
Recalibrate the NIBP measurement according to the instructions in chapter
calibrations" on page
calibration.
Disconnect the pressure manometer. Select Calibrations - Calibration Check. Press the
ComWheel and take down the zero offset values for both pressure transducers, B1 and
B2. The values should be within ±20 mmHg.
Connect the pressure manometer to the cuff connector and check the calibration with
pressures 100 mmHg, 200 mmHg and 260 mmHg. The zero offset value must be added to
the displayed pressure value in order to determine the real pressure.
24. Safety valve functions
Select Safety Valve from the NIBP service menu.
Disconnect the pressure manometer from the NIBP module cuff connector. Connect the
NIBP hose and cuff to the NIBP module cuff connector. Perform the check with a
standard adult cuff that is connected around some round object, for example a
calibration gas bottle."
Select Start Test. Start the adult safety valve test by pressing the ComWheel. Wait until
the pump stops and the pressure is deflated.
Open cuff connector or disconnect and connect cuff connector from module
Check the pressure values 'Max press' and '2 s after stop' for both transducers. All the
values should be within 270 - 330 mmHg.
Select ADULT. Press the ComWheel and check that the text changes now to INFANT.
Select Start Test and wait until the pump stops and the pressure values on the screen
have been updated.
Open cuff connector or disconnect and connect cuff connector from module
Check that the values 'Max press' and '2 s after stop' are all now within 135 to 165 mmHg.
Return to the normal monitoring mode by pressing
Disconnect the pressure manometer from the NIBP module cuff connector. Connect the
NIBP host and cuff to the NIBP module cuff connector.
Perform the check with a standard adult cuff that is connected around some roundobject,
for example a calibration gas bottle.
3-32. Remember to set the calibration protection back on after the
Planned maintenance
Normal Screen
.
Document no. 2044677-001
"NIBP
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