Mallinckrodt NELLCOR NPB-4000 Service Manual page 26

Section 3: Performance Verification
3.3.4.4.5 Over-pressure
3.3.4.5 Operation with a Temperature Simulator
3-14
The over-pressure test verifies the functionality of the over-pressure relief
system of the NPB-4000/C.
1. Ensure Bio-Tek simulator is in test mode. The simulator should display
"Pressure Gauge".
2. Ensure simulator is set up for internal cuff.
3. Ensure NIBP Test screen is active on NPB-4000/C.
4. Press Heart Rate Tone Volume switch on NPB-4000/C to ensure both
valves are closed.
5. Perform offset adjustment so simulator and NBP-4000/C both display a
pressure of 0 mmHg.
a. Press Contrast Adjust switch on NPB-4000/C,
b. Press Zero button on simulator, to
6. Press Select button on simulator until simulator displays "Overpressure
Test".
7. Press Start Test button on simulator.
Note: The simulator will pressurize the system until the monitor' s over-pressure
relief system activates. The simulator will display the pressure value that
caused the NPB-4000/C over-pressure relief system to activate. The test
will have been successfully completed if the simulator displays a pressure
reading of 280 mmHg to 330 mmHg.
8. Press and hold Heart Rate Tone Volume switch to ensure NPB-4000/C
displays a pressure of 0 mmHg.
Note: Additional NIBP tests may be performed at this time. If no further NIBP
tests are to be conducted, turn the NPB-4000/C off. Normal monitoring
operation will return the next time the monitor is turned on.
1. With monitor off, connect temperature cable (supplied with the temperature
simulator) to appropriate connector on temperature simulator.
2. Connect temperature cable to temperature input port on NPB-4000/C.
3. Set temperature simulator as follows:
Temperature:
Probe type:
37° C (98.6° F)
YSI 400 series