Gambro AK 95 S Service Manual page 112

Base-kit
8.3 Check of air leakage
By entering this test mode the air leakage for
the BPM module, cuff hose and cuff will be tested
automatically.
Before entering the test mode cuff and cuff hose
to be connected to the AK 95 S.
Cuff to be wrapped tight to the BPM test equip-
ment.
BPM test equipment is used to simulate the
patient arm circumference. The air leakage is
only tested for 90 sec but the value is recalcu-
lated for 3 minutes.
If the displayed value is above 18 mm Hg / 3
minutes, this indicates that there is a possible
air leakage in the system.
It is of course also possible to perform this test
without the cuff and cuff hose connected but then
the test will only check for air leakage within the
AK 95 S. In this case replace the cuff and cuff
hose by a tube, which is closed.
8.4 Check of inflation speed
By entering this test mode the capacity for the
pump within the module will be tested automati-
cally. Before entering the test mode cuff and cuff
hose to be connected to the AK 95 S.
Cuff to be wrapped tight to the BPM test equip-
ment. If the displayed time is above 11 seconds,
this test indicates that the pump is worn-out.
AK 95 / AK 95 S HCEN12189 Rev. 10. 2006
8.5 Check of pressure transducer calibration and
measured pressure
By entering this test mode it will be possible to
check the actual pressure value for the BPM
pressure on the AK 95 S display.
Before entering the test mode, pressure trans-
ducer calibration tube kit K13983002 to be
connected to the BPM connector. No cuff and
cuff hose to be connected.
Note! The pressure transducer calibration tube
kit must be drained before being connected, to
make sure that no fluids or particles enters the
BPM connector or tubing's. This might otherwise
damage or destroy the sensitive BPM sensors.
When "Measured pressure" is displayed it is
possible to start applying the external reference
pressure.
Note! Pressures shall be applied very carefully
so that no overpressures occur.
To check the actual pressure value, external
pressure reference instrument to be connected
and external pressure of 250, 150, 50 mm Hg to
be applied. Check deviation from reference
pressure instrument for displayed value.
Maintenance Manual
5:9