Bedfont NoxBox - Alarm Priority- Alarms During Therapy

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8.3 Alarm Priority- Alarms during therapy
Thebelowareaseriesofalarmswhichmaybeseenduringtherapy(oncethedevicehasbeen
setup)ifanissueisdetectedwiththeNOxBOX
i
.
Alarm Priority Possible Cause Recommended Action
NO Low MonitoredlevelsofNOgas
beingdeliveredtothepatienthave
dropped below the alarm setting
boundary.NOxBOXideliverysystem
cannot mainatin correct dose setting.
Checksamplelineiscorrectlyattachedtoventilator
circuit and NOxBOX
i
water trap inlet.
Check Sample line for blockages.
Checkwatertrap(includingbarrelthread)for
damage and/or leaks.
Checknoventilatorcircuitbreaksorleakageshave
occurred.
Checksupplycylinderisconnected,open;thereare
no leaks and the concentration matches the system
setting.
Check correct orientation of NOxFLOW.
Check NOxFLOW dose line and
connection is connected and there are no
blockages or leaks.
CheckNOxFLOWowdetectionlinesand
connection(includingOrings)areconnectedand
there are no blockages or leaks.
Theventilatorminutevolumemaybe
too low.
Checkventilatorminutevolume(seesection3.2for
owranges),youmayneedtoincreasethe
ventilatorbiasow.
The NO low alarm may be
inappropriately set by user.
CheckNOlowalarmvalueandreducevalueif
ventilatorsettingsdeemnecessary.
The NO sensor may require
replacing.
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.
NO High MonitoredlevelsofNOgasbeing
deliveredtothepatienthaverisen
abovethealarmsettingboundary.
NOxBOX
i
deliverysystemcannot
maintain the correct dose setting.
Check supply cylinder concentration matched the
systemsettings.Ifpossible,changetheNOsupply
cylinderforthecorrectconcentration.Ifnot,call
ServiceEngineertoresolve.
Checknoventilatorcircuitbreak/leakagehas
occured that may cause build-up of NO
concentrationduetolackofventilatorow.
Check correct orientation of NOxFLOW
CheckNOxFLOWconnection(andOrings)to
NOxBOX
i
.
The NO high alarm may be
inappropriately set by user.
CheckNOhighalarmvalueandincreasevalueif
ventilatorsettingsdeemnecessary.
The NO sensor may require
replacing.
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.
NO
2
High
MonitoredlevelsofNOgasbeing
deliveredtothepatienthaverisen
abovethealarmsettingboundary.
HighNOdosesettingsonlowventilatorowswith
High O
2
content may cause higher NO
2
build-up
thanexpected.Increaseventilatorbiasowtohelp
reducestagnationindelivery.