60 Alarms
fabian Therapy evolution | SW 5.1.x
Ref: 121003.EN / Date 2020-01-22
7.4.4 Watchdog alarms
There is a watchdog circuit, which monitors for failures of the following components:
NetDCU (responsible for the graphical user interface WDST#4 error)
Control PIC (responsible for control of ventilation WDST#16 error)
Monitor PIC (responsible for monitoring functions WDST#32 error)
Alarm PIC (responsible for alarm audible indication and lamps WDST#64 error)
In case of a failure, the watchdog opens the pressure relief valves and stops power to the blender
module to prevent and/or relieve pressure in the patient circuit while alarming.
In case of occurrence, follow these steps:
1. Immediately start ventilation of patient with an Alternative Ventilation method
2. Shut down the device.
3. Report the incident to your local distributor
4. Use the device only if it is unavoidable
In case a WDST 4/16/32/64 error is resolved (only a temporary error) WDST#8 will be triggered and
displayed and the device can continue to be used.
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