Setting the device
35
6.6 Function
test
The device carries out an automatic function test each time it is connected to
the power supply, during which important hardware components are checked.
The device generates two acoustic signal beeps during the course of the func-
tion test that show that the acoustic alarm system is functioning.
If errors are identified during the function test, these are shown in the display.
Read the section on operational malfunctions for further information Page 43.
6.7 Testing
the
alarms
Manual testing of the alarms is not necessary because of the automatic func-
tion test of the device. If you still want to check the alarms, follow the instruc-
tions regarding alarm simulation.
Alarm
simulation
To simulate the alarm, please set up the device as follows:
with a 1.80 m / 22 mm tube, a nasal respiratory mask, without respiratory hu-
midifier and without bacterial filter. Check that the settings have been made
accordingly under therapy settings.
Alarm
Simulation
Circuit disconnection
• Start the therapy.
• Pull the tube out of the device.
The alarm should sound within 10 seconds.
Mains failure
• Start the therapy.
• Pull the power cable out of the socket.
The alarm should sound directly.
Tube blocked
• Start the therapy.
• Hold the tube with your hand so that no further leak-
age is possible.
The alarm should sound within 20 seconds.
System error
This alarm sounds if the device component is defec-
tive. It therefore cannot be tested without damaging the
device.
