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Descriptions
Flow chart of self-test
Flow chart of self-test
Flow chart of self-test in ventilator
Legend:
A
Display in dialogue window of ventilator
Indicated faults must be remedied,
F
instructions and advisories observed.
I
Information in dialogue window of ventilator
Press rotary control
Correspondingly numbered test blocks in VT window
#
)
Test sequence *
:
1
Start self-test
2
Monitor
3
4 / 5
6
Continued on next page ...
124
Various electrical tests
Make contact with
system monitor
I
Sensors calib. !
A
Fresh gas occl?
A
APL = 30 mbar ?
A
Y-piece open ?
Test operating control
pressure
Check piston
Zero pressure sensor
Y-piece occluded?
Various electrical tests
Position piston
) The normal course of the self-test is illustrated here. The order of test
*
Subsystem 3
Subsystem 1
Subsystem 2
A
Piston defect
A
Supply pressure?
A
Contr.press. low
A
Service Nr. 120
A
BREATH.SYS.LEAK!
A
Remove piston
A
Insert piston
A
Y-piece open ?
A
P-Sensor fault
A
BreathSys.defect
A
Contr.press. low
A
BreathSys.defect
steps may be varied by the machine in order to optimize the test time.
Vapor
Pneumatic
interface
Piston pumpe
F
F
F
F
F
F
F
F
F
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