Bedfont NoxBox - General Troubleshooting and System Issues

80
Manual
Override
ManualOverridemodeisengaged.
The system alarms to alert the user that
thesystemisnotdeliveringinintelligent
mode.Changestotheventilatorsetting
or patient demand cannot be
automatically corrected on the system. A
specicdosesettingcannotbedialledin
andachieved.
The patient must be closely monitored
and ensure the gas alarms are correctly
settoalertforanyabnormalgasdelivery
behaviour.
Thisalarmwillresolvewhenthesystemis
returnedtonormalIntelligentDeliveryMode.
8.4 General Troubleshooting
Issue Possible Cause Recommended action
NOxBOX
i
turns on and off
immediately. NOxBOX
i
attempts to start up but shuts
down.
NOxBOX
i
won’tturnonatall.
Low battery power Connect NOxBOX
i
to mains power and turn
on NOxBOX
i
.
Aninternalfaulthasoccurred;the
system shuts down to protect
integral components.
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.
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.
Oneorallofthesensors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.
Fluctuations/ Oscillations in
excess of 3ppm.
May be due to NOxFLOW Ensure O-ring and NOxFLOW are present
and connected.
Massowsensordueforservice.
ContactServiceEngineer.
HFO Frequency
Adjustthefrequencyslightlybasedupon
yourclinicaljudgement.