Bedfont NoxBox - Alarm Priority

79
Critical
Delivery
Fault
The NOxBOX
i
has detected a critical
faultwithintheintelligentdelivery
system,andcannolongerguarantee
safedeliveryfunction.
Checktheventilatorisconnectedand
supplyingsufcientow.
Ifanothersystemisnotreadilyavailableand
patientrequirestherapy,engagethe
manualoverridemode,replacethesystemas
soonaspracticallypossibleandalerttheService
Engineer.
Touch
screen will
not
respond.
The NOxBOX
i
has detected a
critical fault within the intelligent
deliverysystem,andcannolonger
guaranteesafedeliveryfunction.NO
delivery to the patient may have
stopped.
Ifanothersystemisnotreadilyavailableand
patientrequirestherapy,engagethemanual
overridemode,replacethesystemassoonas
practicallypossibleandalerttheService
Engineer.
Medium Priority Alarms during therapy
Alarm Priority Possible Cause Recommended Action
Zero
Calibration
Every24hoursduringusetheNOxBOX
i
prompts the user to perform a sensor
zero. This operation ensures the most
accurate system performance by
checking the gas sensor reading
performance.
NOTE:Thistesttakesupto2minutesto
perform. During this time the monitored
patientgaseswillbeofine.The
NOxBOX
i
continuestodeliverNOduring
this time.
Nospecialconnectionsarerequired;thezero
calibration is fully automatic.
Press the tick to start the zero calibration.
The zero calibration can be delayed if the
system is not currently in a stable dose
deliverystate:e.g.Ifthepatientdosehas
recently been changed and the system is still
stabilisingtothenewdoselevel,dismissthisalarm
message and perform the zero when the notice
next appears.
Zero
Calibration
Fail
Oneorallofthesensorshavefailedthe
zero(low)calibration.
Ambient conditions may be affecting the
zero sample.
CheckambientNOxAIRmonitorforhighlevels
ofNO.Ifhighlevelsaredetected,checkthe
regulator(s)andsupplyline(s)forleaks.
Asensormayhavebecomeunstable
or residual gas may be present in the
system.
Repeat zero calibration.
Checkthezeroport(rear)hasnotbeen
blocked.
Ifanothersystemisnotreadilyavailableand
patientrequirestherapy,engagethemanual
overridemode,replacethesystemassoon
aspracticallypossibleandalerttheService
Engineer.
Cylinder
Low
This will appear when an alternate
viablegassupplyisdetected,butthe
current feed cylinder is nearly depleted.
Replace the cylinder with a fresh
supplytoresolvethisalarm.
Alternatively,oncethecylinderisempty,close
thecylindervalvefully,removethefeedhose
from the rear of the system and release the
pressure using the purge needle on the
monitor.Pleasenote,oncethesecond
cylinderbeginstodeplete,ifthisrstcylinder
hasnotbeenreplacedintheinterimperiod,
the‘cylindersupplycritical’alarmwillbe
triggered.