58 Troubleshooting
Visual alarms flashing but
no acoustic alarm.
Short-term electronic disruption
Switch off and on again. If error recurs,
arrange for repair.
Acoustic alarm but no
visual alarm
Acoustic alarm and all
visual alarms flashing
MEDUMAT Standard a is
functioning but without
any displays
Pressure gauge hose on
MEDUMAT Standard a or on
patient valve slipped off
Check pressure gauge hose
Kink in pressure gauge hose
MV too low
Wrongly selected ventilation
parameter
Check ventilation parameters
MEDUMAT Standard a defective Arrange for repair
Unusually high oxygen
consumption
Leak in oxygen supply Seek and eliminate leak (7.3, page 47)
MEDUMAT Standard a
cannot be switched off
User error
Keep switch depressed for at least
2 seconds.
Manometer needle not
standing at “0“
Manometer needle needs
adjustment
Adjust (8.3, page 61)
Test bag is not sufficiently
inflated during functional
check, disconnection
alarm
Ventilation parameters wrongly
selected
Correct ventilation parameters
Patient valve not working
properly
Check lip membrane
Pressure gauge hose not fitted Fit pressure gauge hose
No stenosis alarm when
patient valve is closed
during functional
check(see “7.5 Checking
the minute volume”, item
6–9)
Patient valve not working
properly
Check lip membrane
Defect Cause of defect Elimination
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