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Functional test 89
FUNCTIONAL TEST
Until all tests have been passed, the device must not be used and
should be checked by an authorized service technician.
The tube system to be used and a test lung (optional accessory) are
required for the functional test.
1. Connect the tube system and the test lung to the ventilator.
2. Connect the device to the mains power, as described in the chapter
“Power supply” as of page 40.
3. Switch the ventilator on using the main switch on the rear of the device
(setting “I”).
4. Start ventilation by pressing the ON/OFF key.
CHECKING THE ACOUSTIC ALARM
Switch the ventilator on using the main switch on the rear of the device
(setting “I”). A signal must sound.
CHECKING THE ALARM BUTTON LIGHT
After the device is started, it carries out a self-test of the alarm button. The
button must light up in the following order: white > red > yellow > white.
The light subsequently goes out.
CHECKING THE DISPLAY
Switch through all screens and check that all display elements are pres-
ent and legible and that the display’s lighting is functioning. If necessary,
check the “Contrast” and “Brightness” settings (see page 71).