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51
Document no. M1137266-02
Table 8
Description of system test
Test label
Description
If test fails
Pump unit function
Stepper motor aspirates/pushes room air
through the zeroing valve. If the stepper is
working properly, it is able to generate small
negative/positive pressure at the pump unit
pressure sensor.
Check the function of stepper
motor.
Cath press = pump press
Pump pressure sensor and catheter pressure
sensor readings are compared at three
pressures: at ambient pressure, at approx.
+100 mbar and –100 mbar.
Calibrate the pressure sensors.
Tubing leak test
The air tightness of the module inner tubing
from the zeroing valve to the pump valve is
tested.
Check tubing and connections
for leaks.
Pump unit leak test
The air tightness of the pump unit is tested.
Check pump unit for leaks.
Cath conn. leak test
The air tightness of the zeroing unit and
catheter connector is tested.
Make sure that the catheter
connector is properly closed
during the test. Check the
zeroing unit and the catheter
connector for leaks.
Block test
Air is aspirated through the zeroing valve. If
pressure at the pump pressure sensor drops
too much, the tubing/valves from the zeroing
valve to the pump pressure sensor is blocked.
Check the tubing/valves for
blocks.
Zero valve function
Module pneumatic system pressurized and
then the zeroing valve is opened to room air.
If the pressure does not drop, the zeroing
valve may not be functioning.
Check the function of the
zeroing valve.
Pump valve function
Module pneumatic system pressurized and
then the pump valve is opened to room air. If
the pressure does not drop, the pump valve
may not be functioning.
Check the function of the
pump valve.
Summary of Contents for Datex-Ohmeda S/5
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