Weinmann BiLevel-ST VENTImotion WM 24800, Service And Repair Instructions

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18 Test the device
4.12 Test the interface with the VENTI- O
2
1. Fit a VENTI- O
2
valve to the therapy device so
that it is ready to work. The indicator on top of
the valve housing does not light up.
2. Close the opening of the nasal mask, using
your thumb or hand, for example.
3. Switch on the therapy device first, then your
O
2
supply. After the therapy device has been
switched on, the valve opens with a soft "click"
indicated by the green indicator.
4. You can now set the test flow rate on the flow
display of your oxygen system. If this is not
possible, first check the function of your oxy-
gen system (is the cylinder empty, for example,
or are hoses kinked?).
5. Switch the device off again. The valve audibly
switches to "vent", the indicator goes out.
Note
If the VENTI- O
2
valve does not react as described,
perform the following measures in sequence and
test again in each case.
• Use a different valve.
• Replace the connecting cable of the power
board/mains supply unit (see "7.5 Replace
power board" on page 34).
• Replace the power board (see "7.5 Replace
power board" on page 34).
4.13 Test interface with the VENTI power
Note
Before this test is carried out, the therapy device
must have been connected to the mains power
supply for at least 5 minutes.
1. Fit the VENTI power to the therapy device so
that it is ready to work therapy device. Con-
nect the therapy device to the mains power
supply.
2. Switch on the VENTI power and then the thera-
py device. VENTI power is working correctly if
its displays go out, in other words, if
VENTI
power switches to standby mode.
3. Now disconnect the plug of the therapy de-
vice, the device switches off. The power fail-
ure alarm sounds.
Indicator