6.4.5Diagnostic Menu for Software Version 7.22

Display

Description

 

 

HC

Humidity Compensation (HC) algorithm

 

 

 

Note: HC is inactive while operating under non-heater wire control.

 

 

Invasive mode, compensation range is 0.0 to 5.0 °C ( CSP = 37.0 to 42 °C )

 

 

Non-Invasive mode, compensation range is 0.0 to 5.0 °C ( CSP = 31.0 to 36.0 °C )

 

 

By pressing the Mute and Mode buttons together for 1 second or pressing the Mute and Power buttons

 

 

together for 1 second the user can respectively move up or down through the settings listed below. The

 

 

humidifier will confirm the change with a double-beep.

 

 

‘5.0’ = +5.0 °C of chamber compensation

 

 

 

‘4.0’ = +4.0 °C of chamber compensation

 

 

 

‘3.0’ = +3.0 °C of chamber compensation

 

 

 

‘2.0’ = +2.0 °C of chamber compensation

 

 

 

‘1.0’ = +1.0 °C of chamber compensation

 

 

 

‘0.0’ = +0.0 °C of chamber compensation (NO compensation)

 

 

‘-A-‘ = Automatic humidity compensation mode:

Invasive mode: 0 to 5 °C in 0.5 °C steps

 

 

 

 

Non-invasive mode: 0 to 5 °C in 1 °C steps

 

 

 

 

 

Cct

Connected breathing circuit identification:

 

 

 

“S“ = Standard inspiratory heater connected

 

 

 

“C” = Coaxial inspiratory heater connected

 

 

 

“E” = Expiratory heater connected

 

 

 

“---” = No heaters detected while under heater wire control

 

 

Non-Heater Wire Operation

 

 

 

To enable non heater wire operation, press and hold both the mute and mode buttons simultaneously for 1

 

 

second. The display will show ‘nhh’ and the humidifier will confirm with an audible beep. Ensure that no

 

 

heated breathing circuit is connected to the humidifier otherwise the humidifier won’t change operation.

 

 

To disable non-heater wire mode, repeat the above process or connect a heater breathing circuit.

 

CSP

Chamber set point, in 0.1 °C resolution eg: 37.0

 

 

 

Invasive mode range 35.5 to 42 °C.

 

 

 

Non-Invasive mode range 31.0 to 36.0 °C.

 

 

 

 

 

 

Cdc

Chamber Duty Cycle (%)

 

 

 

During selection of this menu and while a chamber probe out test is active the chamber probe indicator will

 

 

light.

 

 

 

CHP

Chamber Power / Flow ratio (W/LPM)

 

 

hP

Heater Plate Temperature (1 °C)

 

 

 

 

 

 

Flo

Gas Flow Rate (0.1 LPM)

 

 

 

“---“ = Unknown Flow (flow measurement not started)

 

 

 

 

 

FLr

Gas Flow Rate Range:

 

 

 

“---“ = Unknown Flow (flow measurement not started)

 

 

“no” = No flow, ( Stand-by )

 

 

 

“Lo” = Low flow, ( < 3 LPM )

 

 

 

“In”

= Intermediate flow, ( 2 to 17 LPM )

 

 

 

“Hi”

= High flow, ( > 13 LPM )

 

 

 

“ -“

= Ventilated flow detected

 

 

ASP

Airway temperature set point (0.1 °C)

 

 

 

 

 

 

Adc

Airway Duty Cycle (%)

 

 

 

During selection of this menu and while an airway probe out test is active the airway probe indicator will light.

 

 

H2O

Water out number, used to detect the presence of chamber water, calculated from, chamber power / (heater

 

plate temp. – chamber temp.).

 

 

 

During selection of this menu and while the water out number falls below a dry chamber threshold the water

 

out indicator will light.

 

 

LAS

Last Alarm State, the display will blank, and the humidifier’s last alarm will be shown on the indicators. To

 

 

clear LAS, press and hold the mute and mode buttons for 1 second. The humidifier will beep when LAS has

 

been cleared.

 

 

LFS

Last Fault State, refer to section 6.3. To clear LFS, press and hold the mute and mode buttons for 1 second.

 

The humidifier will beep when LFS has been cleared.

 

SoF

Software version

 

 

 

 

 

End

Press the mute button to cycle to the start of the menu, or the diagnostic menu will automatically exit after 6

 

 

seconds.

 

 

MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)

33