Bedfont NoxBox - Page 77

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Poor quality NO cylinders can
containhighlevelsofNO
2
Connect a second supply cylinder to the alternate inlet
port.Openthecylinderanddisconnecttheprevious
cylinder,forcingacylinderchangeovertoseeifthis
resolvestheissue.
The NO
2
high alarm is set to a
defaultvalueof1.0ppm. NO
2
is
extremely toxic and poses risk to
patient health,
Thealarmvaluecanbeincreasedtoamaximumof
5.0ppm if required. Please see INO guidelines for
more information on maximum NO
2
valuesduringINO
therapy.
Incorrect placement of
NOxFLOW and sample line.
Seeventilatorcircuitdiagramforcorrectplacementof
NOxFLOW and sample line.
Whilst in standby mode NO
2
can
build up in supply lines.
Purgesupplylines(seecylinderchangeprocedure).
Stagnant gas in manual bag circuit
causing NO
2
.
Purge manual bag circuit before connecting to
patient(seemanualbaggingprocedure).
The NO
2
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.
O
2
Low MonitoredlevelsofO
2
gas being
deliveredtothepatienthavefallen
below the alarm setting boundary.
Check sample line for blockages.
Checkwatertrap(includingbarrelthread)for
damage and/or leaks.
Checksamplelineiscorrectlyattachedtoventilator
circuit and NOxBOX
i
water trap inlet.
Checknoventilatorcircuitbreaksorleakageshave
occurred.
TheNOgasisbalancedinN2,this
is an asphyxiant gas. At high NO
doselevelsforlowconcentration
cylinders(e.g.200ppm)thelevel
ofgasdeliveredintotheventilator
streamcanreducethe%v/vofO
2
beingdeliveredtothepatient.
Check O
2
concentrationsettingatventilator.
AdjustO
2
alarmvalueifdeemednecessary.
The O
2
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.
Water
trap full
Watertrapislledwith
condensate from sample line. If the
water trap is allowed to
overow,thesamplepathwillblock
and water ingress to the NOxBOX
i
system could damage the internal
mechanisms and gas sensors.
Deliveryaccuracyiscompromised
and patient safety could be put at
risk.
Use disposable male-luer lock syringe contained in
NOXKITtoemptyuidfromwatertrapviathe
self-sealing drain tap located at the bottom of the water
trap. Dispose of entire syringe and contents according
tolocaldirectives(e.g.sharpswaste).
Thewatertrapusesasmalloattoactivatethealarm,
if no moisture is present gently tap the
barreltoseeifthealarmoatisintheoffposition.