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Preventative Maintenance Tests
Testing the Monitor
4-21
Basic
Pneumatic
Leakage
(BPL) Test
The purpose of this test is to verify the integrity of the NBP pneumatic system after the
monitor has been opened. This includes all external and internal tubing connections.
No simulator is required for this test, and results are not required to be reported.
Note
If the test fails, ensure the integrity of the cuff and tubing, then test again. If the test fails
again, verify the integrity of all the pneumatic tubing inside the monitor.
Step Action
1 Attach the NBP cuff to the NBP tubing and the tubing to the NBP patient
monitoring input connector.
2 Wrap the cuff around itself and place it on a table for the test. DO NOT place the
cuff on your arm.
3 Turn the monitor On and enter the NBP test screen located within Diagnostic
Mode.
4Press the Volume button to close valves.
5 a. Press and hold the NBP Start/Stop switch until the monitor’s screen reads
"250 mmHg" or "33.3 kPa".
b. Wait 15-20 seconds to allow the pressure to stabilize.
6 a. Note the value on the screen (P1), then start a timer.
b. After one minute, note the value on the screen (P2).
c. Calculate the difference between the two values (P1 - P2). The value should
be less than or equal to 6 mmHg (0.8 kPa).
7 Press and hold the Volume button until the screen shows the pressure has
released and the value is 0 mmHg or kPa.
8 Turn the monitor Off.