44 Functional checks
must simulate the expiration stroke of the test
bag by hand.
N.B. For the test, place the test bag on a firm base.
During the expiration phase, press the test bag
with the flat of your hand until the volume
(1 liter) is completely expelled through the
patient valve.
5. Switch off MEDUMAT Standard.
6. Detach the test bag from the patient valve.
7. Select the following setting:
– Frequency 30 min
-1
–MV 3 L/min
–P
max
60 mbar
–No Air mix
8. Switch on MEDUMAT Standard and close the
patient connection to the patient valve.
A stenosis alarm should be set off.
9. Switch MEDUMAT Standard off again.
N.B. Instead of the test bag you can also use a respiro-
meter (see accessories) to check the breath volume.
7.5 Check of maximal ventilation pressure
Important note!
For this test, always set the
tumbler switch to “No Air
Mix”. For physical reasons,
losses occur at the injector
if the switch is set to “Air
Mix”.
1. MEDUMAT Standard must be switched off and
the oxygen cylinder must be open.
2. Check that the needle of the manometer on
MEDUMAT Standard is standing at “
0“ (note
“8.3 Adjustment of manometer“ on page 51).
3. Place the bag from test kit WM15335 on to the
patient valve.
4. Select the following settings: