Preventative Maintenance Tests

Over-PressureThis test verifies the functionality of the over-pressure relief system of the monitor.

Test

Step

Action

1

Turn the simulator on.

 

 

2

Perform the following sequence:

 

a. Press the Home button.

 

b. Press the Pressure Tests button.

 

c. Press the Pressure Relief button.

 

d. Press the Setup button.

 

e. Press 3, 3, 5, then Enter.

 

 

3

Confirm that the simulator is active and displays "Relief Valve Test".

 

 

4

Press the Volume button to ensure that both valves are closed.

 

 

5

Perform an offset adjustment so that the simulator and monitor both display a

 

pressure of 0 mmHg or kPa by doing the following:

 

a. Press the Contrast button on the monitor’s front panel.

 

b. If needed, zero the simulator (see “To Zero the Simulator” on page 4-16).

 

 

6

Press the Start button on the simulator. The peak value (X4) shown on the

 

simulator should be between 270 mmHg and 330 mmHg (35.9 kPa and 43.9

 

kPa). The pressure should return to 0 automatically on the monitor and

 

simulator). Both conditions should be true for the monitor to pass this test.

 

 

7

If no further NBP tests are to be conducted, turn the monitor Off. Normal

 

monitoring operation returns the next time the monitor is turned On.

 

 

Testing the Monitor 4-19

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Philips 862474, 862478 manual Press the Pressure Relief button

862474, 862478 specifications

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