Service Mode Check - GE Centiva/5 Plus Technical Reference Manual

4.4 Service mode check

TRM, Centiva/5 Plus, M1047448/ CM-922026, rev. 3.50.a of 11/05
To identify possible malfunctions displayed as a result of the system test, the
following sequence should be used to verify proper gas supply and operation of the
inspiratory and expiratory valves.
1. Ensure proper O2, AIR and line supplies are connected before turning ON the
system.
2. Wait for the power-up test to complete, and then start the service mode
according to 4.3.
3. Check the actual sensor offset values for Pat. Pressure, Exp. flow, AIR flow and
O2 flow to be in the "no re-adjustment necessary" range according to section
9.9 "Sensor data ranges".
4. Connect the inspiratory and expiratory ports with one tube.
5. Verify proper AIR supply pressure and proper function of the AIR pressure
switch by AIR flow "ON".
6. Verify proper AIR flow function by selecting "AIR" and "x 10" and increasing the
flow by use of the ComWheel.
7. Use the ComWheel to verify that the AIR flow can be returned to zero.
8. Verify proper O2 supply pressure and proper function of the O2 pressure switch
by O2 flow "ON".
9. Verify proper O2 flow function by selecting "O2 " and "x 10" and increasing the
flow by use of the ComWheel.
10. Use the ComWheel to verify that the O2 flow can be returned to zero.
11. Verify proper expiratory flow function by comparing the data displayed with the
set O2 flow.
12. Select "AIR", "x 1" and adjust the ComWheel for an AIR flow of 20 L/Min.
13. Verify proper Airway pressure function by selecting "Pressure" and increasing
the pressure setting by use of the ComWheel.
14. Verify proper O concentration while changing Air and O2 flows.
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4 Test and calibration
4-13