Service manual

Service Manual 45
675-120 Revision D May 2005
Touch the button.
The screen returns to the Start Up Screen .
Note
If the calibration procedure fails, a red is shown in the applicable button. Re-
calibrate and if necessary, replace the O
2
fuel cell.
Giving a Manual Timed Sigh
In the Mode Select or Adjust screens of NCPAP+Apnea, BiPhasic+Apnea or BiPhasic
Tr - touch the
button to give the patient a manual timed sigh.
Operation Without Electrical Power
The IFSD can be used without mains or battery power. To use the IFSD in this
mode, set the required NCPAP flow on the NCPAP Pres low flowmeter and the
required FiO
2
level. All audible and visual indications and warnings are not given
except for the gas failure alarm/bypass which will operate until pressures are balanced.
Fault Indications
Refer to Table 1 (all models) and Table 2 (BiPhasic and BiPhasic Tr models only) for
the fault indications for specific faults and the procedures for resetting or canceling.
Discharged Battery
When the battery voltage is too low to power the circuits, the screen changes to the
Power Down Screen.
• all functions and controllable inputs are disabled
• the controller waits for the power source to be connected
• when external power is restored, the screen changes to the Power Up Screen
• the screen goes blank when the battery power is too low to power the Power
Down Screen
Fault Lockout
If a fault occurs which is detectable by the software and prevents the unit from
operating correctly, the screen changes to the Fault Lockout Screen.
• all functions and controllable inputs are disabled but the unit can still be used
without electrical power
• the related fault code numbers are shown on the screen