Preventative Maintenance Tests

Deflation Rate This test verifies the deflation rate 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 Leak Test button.

 

d. Set the Cuff to Internal.

 

 

3

Confirm that the simulator is active and displays "Leak 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

Note—Complete steps 6-9 within 150 seconds.

 

Press and hold the NBP button on the monitor’s front panel and inflate to 250

 

±10. Don’t go over 270, or safety deflation may occur. (Slow the inflation rate by

 

pulsing the button when the pressure is over 200).

 

 

7

Allow 15-20 seconds for the pressure to stabilize. Record the pressure displayed

 

on the monitor (P1).

 

 

8

Press and hold the "Alarm off" button on the monitor to release the pressure in

 

steps of 3 mmHg (.4 kPa). Simultaneously, start the timer.

 

 

9

Stop the timer when the pressure drops below 150 mmHg (20 kPa). Calculate the

 

deflation rate (X5): (starting pressure - 150)/# of seconds. The deflation rate

 

should be 3.3 mmHg/s ±1.5 mmHg/s (0.44 kPa/s ± 0.2 kPa/s).

 

 

10

Press and hold the Volume button until the monitor displays a pressure of 0

 

mmHg or kPa.

 

 

11

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.

 

 

4-20Testing the Monitor

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Philips 862478, 862474 manual 20Testing the Monitor
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862474, 862478 specifications

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