
125
Descriptions
Flow chart of self-test
Flow chart of self-test in ventilator (cont.)
Test blocks:
Subsystem 1 / 2 (IPPV)
Leak < 1.5 L/min at
30 mbar?
A BAG/Fr.gas hose?
A
Insp. Valve ?
A
Subsyst.1/2 leak
A
Subsystem 1 leak
A
Subsystem 2 leak
A
Fresh gas occl?
A
Insp. Valve ?
A
APL = 30 mbar ?
A
APL
→
MAN. ?
I
Standby
Breathing system
Valve function test
F
F
F
F
A BreathSys.defect
F
F
F
F
A Fresh gas occl?
I
Leaktest IPPV
F
A
Subsystem 3 leak
A
Leak = mL/min
F
Leak eleminated?
A
Leak accepted ?
F
F
End of self-test
> 5 L/min
I
Leaktest MAN.
Subsystem 3
(breathing bag / fresh gas line)
Leak < 300 mL/min
at 30 mbar
A
Service Nr. 119
A
Service Nr. 115
A
Valvedisk defect
A
Diaphragm defect
A
pneum.Interface?
A
Service Nr. 118
F
Control pressure test
Valve and roller diaphragm
test
F
F
A
Insp. Valve ?
A
Subsystem 1 leak
A
Subsystem 2 leak
F
F
F
Leak eleminated?
A
Leak accepted ?
Leak IPPV= mL
A
< 175
> 175
A Fresh gas occl?
A
Leakage >10L/min
F
F
A
Subsyst.1/2 leak
F
7
9
10
8