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Defect
Leak in pressure sensor on
circuit board
Air Mix/No Air Mix switch
faulty
Leak in pneumatic block
O
concentration not correct
2
Frequencies incorrect
Test bag is not sufficiently
inflated during functional
check, disconnection alarm
No stenosis alarm when
patient valve is closed during
functional check, see
"Functional check on tidal
volume" (chap. 3.8,
page 11)
20
Troubleshooting
Cause of defect
4
Measuring device not calibrated
Incorrect measurement sequence
Air Mix/No Air Mix switch
Pneumatic block faulty
Adjustment knob out of adjustment
Spindles (MV + frequency in
MEDUMAT Basic / Basic p Basic)
out of adjustment
Ventilation parameters wrongly
selected
Patient valve not working properly
Pressure gauge hose not fitted
Patient valve not working properly
Elimination
Replace circuit board (chap. 6.12,
page 29)
Replace switch (chap. 6.17,
page 38)
Replace circuit board (chap. 6.14,
page 32)
Calibrate measuring device
Check No Air Mix first, then Air Mix
Replace switch (chap. 6.17,
faulty
4
page 38)
Replace pneumatic block (chap.
6.14, page 32)
or replace pneumatic block with
angled outlet (chap. 6.15,
page 34)
Reset adjustment knob (chap. 6.9,
page 25)
Replace pneumatic block (chap.
6.14, page 32)
or replace pneumatic block with
angled outlet (chap. 6.15,
page 34)
Correct ventilation parameters
Check lip membrane
Fit pressure gauge hose
Check lip membrane
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