6.4.6Diagnostic Menu for Software Version 7.23

Display

Description

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 the water out indicator will light if the water out

 

number falls below a dry chamber threshold.

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.

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