ResMed 248551/1, 2011-09 manual Starting therapy, LCD screen, Performing a functional test

LCD screen

The LCD screen displays the menus, monitoring screens and alarm status.

Warm-up feature H4i	Ramp time
ResMed USB stick
Mains power	Program
External power supply	Therapy mode
Internal battery	Patient mode or
Title bar	Clinical mode
	Current screen/number of
Settings	screens within the menu
	Scroll bar

Therapy status bar

Starting therapy

Performing a functional test

Make sure your device is functioning properly each time before starting therapy.

If any problems occur, see “Troubleshooting” on page 21. Please also check other provided User Instructions for troubleshooting information.

1Turn off the device by pressing the power switch at the back of the device.

2Check condition of device and accessories.

Inspect the device and all the provided accessories. If there are any visible defects, the system should not be used.

3Check the circuit configuration.

Check the integrity of the circuit configuration (device and provided accessories) according to the setup descriptions in this User Guide and that all connections are secure.

4Turn on the device and check alarms.

Press the power switch at the back of the device once to turn on the device.

Check that the alarm sounds a test beep and the LEDs (visual indicator) for the alarm signal and the Alarm mute button flash. The device is ready for use when the Treatment screen

is displayed. If the display shows the Reminder page, follow the instructions, then press

to display the Treatment screen.

5Check batteries.

Disconnect the device from the mains and external battery (if in use) so that the device is powered by the internal battery. Check that the Battery use alarm is displayed and the battery LED is on.

Note: If the charge state of the internal battery is too low, or if the battery is empty, an alarm occurs. See the Alarm troubleshooting section on page 21 for further information.

Reconnect the external battery (if in use) and check that the LED for the external power supply is lit. The External DC power use alarm will be displayed and the Alarm LED will light.

Reconnect the device to the mains.

6Check H4i heated humidifier (if in use).

Check that the warm-up feature is displayed in the Treatment screen. Start the warm-up feature. Check that the humidifier warm-up symbol is displayed on top of the screen.

English

Starting therapy 11