Leakage Test; Linearity Test; Valve Test - Philips Avalon FM20 Service Manual

7 Testing and Maintenance
Raise the pressure to 280 mmHg with the manometer pump.
4
Wait 10 seconds for the measurement to stabilize.
5
6 Compare the manometer values with the displayed values.
Document the value displayed by the monitor (X1).
7
If the difference between the manometer and displayed values is greater than 3 mmHg, calibrate
8
the noninvasive blood pressure measurement. If not, proceed to the leakage test.
9 To calibrate the noninvasive blood pressure measurement, select
and wait for the instrument to pump up the expansion chamber. Wait a few seconds after
NBP
pumping stops until
manometer. If one of the following prompt messages appears during this step, check whether
there is leakage in the setup:
– NBP unable to calibrate–cannot adjust pressure
– NBP unable to calibrate–unstable signal
Press
10
If the INOP
the calibration procedure.

Leakage Test

The noninvasive blood pressure leakage test checks the integrity of the system and of the valve. It is
required once every two years and when you repair the monitor or replace parts.
If you have calibrated, repeat steps 2 to 6 from the accuracy test procedure so that you have
1
280 mmHg pressure on the expansion chamber.
Watch the pressure value for 60 seconds.
2
Calculate and document the leakage test value (X2). X2 = P1 - P2 where P1 is the pressure at the
3
beginning of the leakage test, and P2 is the pressure displayed after 60 seconds. The leakage test
value should be less than 6 mmHg.

Linearity Test

1 Reduce the manometer pressure to 150 mmHg.
2 Wait 10 seconds for the measurement to stabilize.
After these 10 seconds, compare the manometer value with the displayed value.
3
Document the value displayed by the monitor (X3)
4
If the difference is greater than 3 mmHg, calibrate the noninvasive blood pressure measurement
5
(see steps 9 to 10 in the accuracy test procedure).

Valve Test

Raise the pressure again to 280 mmHg.
1
Select
2
Wait five seconds and then document the value displayed. The value should be less than 10 mmHg.
3
Document the value displayed by the monitor (X4).
4
84
EnterPrVal is highlighted and then move the cursor to the value shown on the
.
Confirm
message occurs in Monitoring Mode, go back to Service Mode and repeat
NBP Equip Malf
CloseValves: Off .
CloseValves Off then Calibrate