Message, cause and remedy
Messages in the ventilation system
Message must be acknowledged
Messages during
the self-test
Cause
Remedy
Breathing sys. defect. • Valve V
6
not closing.
Replace breathing system or valve plate.
Display
»109«
in V
T
field
Breathing sys. defect. • Additional air valve not opening.
Replace breathing system or valve.
Display
»111«
in V
T
field
Breathing sys. defect. • APL (overpressure) valve faulty.
Replace breathing system or valve.
Display
»121«
in V
T
field
Breathing system leak • Major leak in breathing system (absorber
Repair leak. Confirm.
missing, no valve plates, breathing system
not fully locked)
Compl. test please
If the self-test is interrupted:
If a malfunction message was previously
Switch off audible alarm by
stored, this message switches the device
acknowledging message. Restart.
to
»Man/Spont.«
mode
(mechanical ventilation is only possible
after fault-free completion of the self-test)
Control pressure low
• Insufficient operating control pressure.
Breathing system or roller diaphragm faulty.
Breathing system and piston pump
Replace defective parts.
installed and locked?
Supply pressure greater than 2.7 bar ?
Fresh gas off ?
• Dialogue during the self-test.
Shut off the gas metering.
Insp. valve ?
• Indication of possible fault:
Is the valve disc in the inspiration valve
Check valve. Change faulty parts.
faulty? Crater damaged?
Remedy leak.
Leak in subsystem 1?
See flow chart on page 164.
Install piston
• Piston pump not installed.
Install piston pump.
Leak = xxx mL/min
• Indicates a leak in the ventilation system.
Acknowledge.
For leaks greater than 300 mL/min
Repair any leak and repeat the test.
(at 30 mbar) in subsystem 3.
See flow chart on page 164.
Leak accepted?
• Indicates a leak in the ventilation system.
The user accepts by confirming the previously
displayed leak. The test continues.
Leak IPPV = xxx mL
Displayed at the end of the leak test in
For information.
subsystem 1/2 for approx. 2 seconds if
the leak < 175 mL/min.
See flow chart on page 164.
111