Bedfont NOBreath User manual

User manual
0086
Our family, innovang health, for yours.
NObreath
®

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Contents!
Intended!use!.......................................................................................................................................!2!
Introduction!........................................................................................................................................!2!
Product!description!............................................................................................................................!2!
Contradictions!....................................................................................................................................!3!
Warnings!............................................................................................................................................!3!
Cautions!..............................................................................................................................................!3!
NObreath®!Mouthpiece!technical!specification!.................................................................................!3!
NObreath®!and!NObreath®!Dock!technical!specification!..................................................................!4!
Safety!information!and!device!symbols!.............................................................................................!5!
Environment!.......................................................................................................................................!6!
Instrument!layout!...............................................................................................................................!7!
Display!symbols!..................................................................................................................................!9!
Demo!mode!......................................................................................................................................!11!
Performing!a!breath!test!..................................................................................................................!11!
Patient!profiles!.................................................................................................................................!12!
Device!information!...........................................................................................................................!13!
Settings!.............................................................................................................................................!14!
Maintenance!....................................................................................................................................!16!
Service!settings!.................................................................................................................................!17!
Servicing!...........................................................................................................................................!18!
Cleaning!............................................................................................................................................!21!
Operation!.........................................................................................................................................!22!
Accessories!.......................................................................................................................................!22!
Troubleshooting!...............................................................................................................................!23!
Returns!procedure!...........................................................................................................................!25!
Spares!...............................................................................................................................................!26!
Warranty!..........................................................................................................................................!26!
References!........................................................................................................................................!26!
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Intended!use!
The!NObreath®!is!a!breath!nitric!oxide!(NO)!test!system!intended!to!measure!fractional!exhaled!
nitric!oxide!(FeNO)!in!parts!per!billion!(ppb)!in!exhaled!breath.!
The!measurement!is!taken!to!evaluate!airway!inflammation!and!should!be!used!in!conjunction!with!
other!clinical!and!laboratory!evaluations!where!appropriate!when!making!a!diagnosis!or!treatment!
plan.!!
The!measurements!are!intended!for!interpretation!by!healthcare!professionals!and!for!use!in!a!
healthcare!environment,!where!patients!will!complete!measurements!under!supervision.!
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Introduction!!
The!production!of!nitric!oxide!is!often!found!to!be!higher!in!inflammatory!conditions!such!as!asthma!
and!can!therefore!be!used!for!the!detection!and!management!of!such!conditions1.!Nitric!oxide!
measurement!is!not!intended!as!a!stand-alone!method!for!diagnosis!and!should!be!used!in!
conjunction!with!other!evaluation!methods!and!tests2.!!
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Product!description!
The!NObreath®!is!a!hand-held!breath!nitric!oxide!monitor!supplied!with!the!NObreath®!Dock,!and!
FeNOCHART™!software.!
The!measurement!system!uses!electrochemical!sensor!technology,!which!has!been!specifically!
designed!for!this!purpose.!!The!sensor!reacts!to!the!presence!of!nitric!oxide!producing!an!electrical!
output,!which!is!then!amplified!with!the!result!displayed.!!The!sensor!has!ambient!air!flowing!into!
the!sensor!chamber!while!the!unit!is!on,!but!not!performing!a!breath!test.!
The!sample!system!for!the!NObreath®!has!been!specifically!designed!in!order!to!meet!the!breath!
test!guidelines!described!in!the!ATS/ERS!Recommendations.!The!ATS/ERS!Recommendations!are!
standardized!procedures!for!the!online!and!offline!measurement!of!exhaled!upper!respiratory!nitric!
oxide!and!nasal!nitric!oxide3.!
The!patient!shall!exhale!at!50ml/sec,!using!the!on!screen!flow!indicator!through!the!sample!system,!
into!the!instrument,!until!a!reading!is!displayed.!
The!NObreath®!shall!also!have!the!capability!to!perform!an!ambient!air!test!as!required.!
Bedfont®!privacy!statement:!!This!product!stores!the!personal!information!of!patients!and!
measurement!data.!It!is!the!sole!obligation!of!the!healthcare!professional!to!make!sure!this!
information!is!secure!and!compliant!with!your!relevant!data!protection!regulations.!

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Contradictions!
There!are!no!known!contraindications!for!this!device.!
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Warnings!
•Read!the!manual!before!use.!
•NEVER!use!alcohol!or!cleaning!agents!containing!alcohol!or!other!organic!solvents!as!
these!vapours!will!damage!the!electrochemical!sensor!inside.!
•Under!NO!circumstances!should!the!instrument!be!immersed!or!splashed!with!liquid.!
•Ensure!the!unit!is!properly!charged!before!taking!a!breath!test.!
•Breath!tests!must!ONLY!be!carried!out!with!the!correct!Bedfont®!accessories.!Failure!to!
do!so!will!cause!incorrect!readings!and!may!invalidate!your!warranty.!
•The!vent!holes!on!the!rear!of!the!unit!must!NEVER!be!covered!during!normal!use.!
Covering!the!vent!holes!may!cause!incorrect!readings.!
•DO!NOT!attempt!to!modify!the!equipment!in!any!way.!Any!attempt!to!do!so!will!
immediately!invalidate!your!warranty,!cause!incorrect!readings,!and!may!compromise!
the!safety!of!the!device.!
•DO!NOT!leave!the!NObreath®!or!docking!station!in!direct!sunlight.!
•It!is!best!practice!to!NOT!let!the!battery!run!dead.!
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Cautions!
•Ensure!the!monitor!is!used!within!the!correct!temperature!and!relative!humidity!(RH)!
range,!as!stated!in!the!specification!on!page!4.!
•The!NObreath®!complies!with!the!EMC!requirements!of!IEC!60601-1-2,!outside!of!these!
requirements!portable!and!mobile!RF!communications!equipment!may!affect!the!device.!
•Federal!law!restricts!the!device!to!sale!only!by,!or!on!the!order!of,!a!physician!(USA!only)!
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NObreath®!Mouthpiece!technical!specification!
Infection!control!
A!one-way!valve!to!prevent!patients!
drawing!air!back!from!the!monitor.!!
An!integrated!infection!control!filter!
removes!and!traps!>99%!of!airborne!
bacteria!and!>96%!of!viruses4.!
Dimensions!
Approx.!180!x!25!x!15!mm!
Weight!
Approx.!11g!
Materials!
Polypropylene!
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NObreath®!and!NObreath®!Dock!technical!specification!
Exhaled(flow(during(FeNO(measurement(at(50ml/sec(±10%(at(10cm(H203(
Concentration!range!
0-500ppb!
Display!
Full!colour!touchscreen!
Detection!principle!
Electrochemical!sensor!
Repeatability!
±5ppb!of!measured!value!≤!50ppb!
±10%!of!measured!value!>!50ppb!
Accuracy!
±5ppb!of!measured!value!≤!50ppb!
±10%!of!measured!value!>!50ppb!
Power!
NObreath®!monitor!
1!x!main!rechargeable!Li-ion!battery!–!
Approx.!100!uses!on!fully!charged!battery!
2!x!Li-ion!coin!cell!battery!–!Approx.!5!years!
Input:!5V,!0.5A!
NObreath®!Dock!
Mains!powered!
Input:!5V,!0.5A!
Output:!5V,!0.5A!
Plug!
Input:!100-240V!~!50/60Hz.,!0.2A!
Output:!5.0V,!1.0A!
T90!response!time!!
≤10!seconds!
Temperature!
Operating!
10-30°C!
Storage/transport!
0-40°C!
Humidity!
Operating!
25-75%!non-condensing!
Storage/transport!
0-95%!non-condensing!
Operating/transport/storage!pressure!
Atmospheric!±10%!
Sensor!operating!life!
5!years!(subject!to!servicing)!!
Sensor!sensitivity!
1ppb!
Sensor!drift!
<5%!per!annum!
Dimensions!
Approx.!90!x!159!x!59!mm!
Weight!
Approx.!400g!
Materials!
NObreath®!monitor!
Case:!polycarbonate/ABS!blend!
SteriTouch®!anti-microbial!additive!
NObreath®!Dock!
Breath!test!time!
Adult!
12!seconds!
Child!
10!seconds!
Ambient!
30!seconds!
Warm-up!time!
≤60!seconds!
Maximum!ambient!operating!level!
350!ppb!NO!
CO!cross!interference!!
45!ppm!≤17.6!ppb!
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Safety!information!and!device!symbols!
Degree!of!protection!against!electric!shock!
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Type!BF!applied!part!
Type!of!protection!against!electric!shock!
Internally!powered!equipment!
Degree!of!protection!against!ingress!of!liquid!
IPXO!–!not!protected!against!water!ingress!
Degree!of!safety!application!in!the!presence!of!
a!flammable!anaesthetic!mixture!with!air,!
oxygen!or!nitrous!oxide!
Equipment!not!suitable!for!use!in!the!presence!
of!flammable!mixtures.!
Refer!to!manual!
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The!device!includes!a!Radio!Frequency!(RF)!
transmitter!(Bluetooth)!
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CE!mark!
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Direct!current!
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Dispose!of!according!to!WEEE!
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Serial!number!
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Manufactured!by!
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Manufacture!date!
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Bedfont®!logo!
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Environment!
The!NObreath®!and!NObreath®!Dock!comply!with!the!directive!EN60601-1-2:2015!4th!edition!
electromagnetic!compatibility.!
Electromagnetic!immunity:!
The!NObreath®!and!NObreath®!Dock!comply!with!the!directive!EN60601-1-2!electromagnetic!
compatibility!but!can!be!affected!by!cellular!phones!and!by!electromagnetic!interference!exceeding!
the!levels!specified!in!EN55011:2007!Class!B.!
Guidance!and!manufacturer’s!declaration:!Electromagnetic!immunity!
The!NOBreath®!is!intended!for!use!in!the!electromagnetic!environment!specified!below.!The!customer!or!the!user!of!the!
NObreath®!should!ensure!that!it!is!used!in!such!an!environment.!
Immunity!test!
IEC!60601!test!level!
Compliance!level!
Electromagnetic!environment!
guidance!
Electrostatic!
Discharge!(ESD)!
IEC!61000-4-2!
±8kV!contact!
±15kV!air!!
±8kV!contact!
±15kV!air!
Floor!should!be!wood,!concrete!or!
ceramic!floor!tile.!If!floors!are!
covered!with!synthetic!material!the!
relative!humidity!should!be!at!least!
30%.!
Electrical!fast!
transient/burst!
IEC!61000-4-5!
–!
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Surge!
IEC61000-4-5!
–!
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Voltage!dips,!
short!
interruptions!
and!voltage!
variations!on!
power!supply.!
IEC!61000-4-11!
–!
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Power!
frequency!
(50/60Hz)!
Magnetic!field!
IEC!61000-4-8!
30!A/m!
30!A/m!
Power!frequency!magnetic!fields!
should!be!at!levels!characteristic!of!
a!typical!location!environment.!
Conducted!RF!
IEC!61000-4-6!
Radiated!RF!
IEC!61000-4-3!
10V/m!(1kHz!80%)!80MHz-2.7GHz!
10V/m!(1kHz!80%)!80MHz-2.7GHz!
Portable!and!mobile!RF!
communications!equipment!should!
be!used!no!closer!to!the!NObreath®!
than!the!recommended!separation!
distance!calculated!from!the!
equation!appropriate!to!the!
frequency!of!the!transmitter.!
Interference!may!occur!in!the!
vicinity!of!equipment!marked!with!
the!following!symbol:!
!
385!MHz!
27!V/m!
385!MHz!
27!V/m!
450!MHz!
28!V/m!
450!MHz!
28!V/m!
710!MHz!
9!V/m!
710!MHz!
9!V/m!
745!MHz!
9!V/m!
745!MHz!
9!V/m!
780!MHz!
9!V/m!
780!MHz!
9!V/m!
810!MHz!
28!V/m!
810!MHz!
28!V/m!
870!MHz!
28!V/m!
870!MHz!
28!V/m!
930!MHz!
28!V/m!
930!MHz!
28!V/m!
1720!MHz!
28!V/m!
1720!MHz!
28!V/m!
1845!MHz!
28!V/m!
1845!MHz!
28!V/m!
1970!MHz!
28!V/m!
1970!MHz!
28!V/m!
2450!MHz!
28!V/m!
2450!MHz!
28!V/m!
5240!MHz!
9!V/m!
5240!MHz!
9!V/m!
5500!MHz!
9!V/m!
5500!MHz!
9!V/m!
5785!MHz!
9!V/m!
5785!MHz!
9!V/m!

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Instrument!layout!
1. ON/OFF!button!
2. Touchscreen!display!
3. Mouthpiece!aperture!
4. Vent!holes!
5. Service!cover!lock!
6. Micro!USB!port!
7. NObreath®!Dock!(applied!part)!
8. USB!cable!(applied!part)!
9. NObreath®!single-use!mouthpiece!
10. Mains!power!adaptor!with!connectors!
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Inside!the!service!cover:!
11. Rechargeable!Li-ion!battery!
12. Breath!drying!cartridge!
13. Ambient!air!NO!scrubber!
14. NO!electrochemical!sensor!
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Display!symbols!!
Device!information!
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Save!
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Adult!breath!test!
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Home!screen!
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Child!breath!test!
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Next!screen!
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Demo!mode!
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Previous!screen!
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Patient!profiles!
(PIN!protected)!
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Patient!results!
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Battery!(full)!
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Delete!patient!
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Battery!(half)!
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Settings!
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Battery!(critical)!
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Date/time!
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Selected!
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Inhale!(adult)!
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Unselected!
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Exhale!(adult)!
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Increase!
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Inhale!(child)!
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Decrease!
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Exhale!(child)!
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Test!log!
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Pass!
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Change!PIN!
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Fail!
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Disable!PIN!
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Retry!
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Enable!PIN!
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Set!measurement!incentive!
preference!
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Diagnostics!
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Ambient!mode!
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Diagnostics!log!
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Screen!brightness!
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Sensor!!
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Disable!Bluetooth!
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Maintenance!due!reminder!
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Enable!Bluetooth!
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Maintenance!overdue!
reminder!
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Bluetooth!PIN!
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Maintenance!overdue!
locked!reminder!
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Bluetooth!enabled!display!
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Rear!cover!off!
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Service!access!
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No!sensor!warning!
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Pump!calibration!
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No!scrubber!cartridge!
warning!
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Refer!to!manual!
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Reset!
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Gas!calibration!
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Ambient!mode!locked!
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Temperature!too!low!to!
calibrate!
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Adult!breath!test!locked!
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Temperature!too!high!to!
calibrate!
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Child!breath!test!locked!
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Sensor!zeroing!
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Charging!
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Confirm!
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Cancel!
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Demo!mode!
The!NObreath®!has!an!in-built!demonstration!video!of!the!breath!test!process.!We!recommend!
watching!this!video!prior!to!using!the!device!for!the!first!time.!This!demo!can!also!be!used!to!explain!
to!patients!how!the!test!will!run,!prior!to!performing!one.!
1. The!demo!video!can!be!accessed!from!the!home!screen!by!pressing!the! icon.!
2. Select!either!the! !or! icon.!
3. A!demonstration!will!run!through!the!breath!test!process.!The!whole!test!will!be!shown,!but!
at!an!accelerated!speed.!!
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Performing!a!breath!test!
1. Turn!the!NObreath®!monitor!ON!by!pressing!the!power!button,!once.!!
2. Open!a!new!NObreath®!mouthpiece!and!insert!it!into!the!front!of!the!unit.!!!
3. To!start!a!breath!test,!touch!the! !or! icon!on!the!screen.!
NOTE:(To(cancel(the(breath(test,(press(the( (icon.!
4. As!prompted!onscreen!by! !or! ,!inhale!until!prompted!to!exhale.!Do!not!
inhale!through!the!mouthpiece.$
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5. When!directed!to!do!so!by!either! !or! ,!keep!the!monitor!upright!and!
blow!gently!into!the!mouthpiece.!Make!sure!you!are!not!covering!the!vent!holes.$
NOTE:(The(exhalation(time(is(approximately(12(seconds(for(an(adult(and(10(for(a(child.!
6. The!onscreen!flow!meter!will!guide!you!on!the!exhalation!rate:!continue!blowing!until!the!
green!tick! !appears!on!screen!to!indicate!a!successful!test.!
NOTE:$If(you(outside(of(the(exhalation(guidelines,(the(test(will(beep,(before(indicating(a(fail,(
and(a(red(cross( (will(appear.(Touch( (to(retry(the(test(or( (to(view(the(
result.(
7. Following!the!tick,!a!result!will!appear!on!the!screen,!in!ppb.!
8. You!may!save!this!result!by!pressing! .!!
NOTE:!If(you(have(not(entered(your(PIN(in(the(last(30(minutes,(you(will(be(asked(to(enter(it(
before(you(can(access(the(patient(profiles.(If(your(PIN(is(entered(incorrectly,(you(will(be(
notified(and(the(screen(will(refresh(for(you(to(re-enter(your(PIN.!If(you(have(forgotten(your(
PIN,(please(contact(Bedfont®(or(your(local(distributor(to(reset(it.!
9. Alternatively,!you!can!return!to!the!home!screen!by!pressing! .!
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Patient!profiles!
The!NObreath®!is!designed!to!be!capable!of!storing!results!in!up!to!50!patient!profiles.!From!the!
home!screen,!select!the! !icon!to!access!patient!profiles.!If!you!have!not!entered!your!PIN!in!the!
last!30!minutes,!you!will!be!asked!to!enter!it!before!you!can!access!the!patient!profiles.!
Enter!your!4!digit!PIN!and!if!successful!you!will!be!presented!with!a!list.!
If!your!PIN!is!entered!incorrectly,!you!will!be!notified!and!the!screen!will!refresh!for!you!to!re-enter!
your!PIN.!
If!you!have!forgotten!your!PIN,!please!contact!Bedfont®!or!your!local!distributor!to!reset!it.!
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To$create$a$new$patient$profile$
To!create!a!new!profile,!choose!an!empty!profile!box!and!enter!a!name!or!reference.!Then!press!
.!!
Alternatively!-!press!a!profile!name!to!open!it.!!

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!
Take$a$breath$test$
To!take!a!test!directly!from!a!patient’s!profile,!open!the!profile!and!select!either!the!ADULT!or!CHILD!
icons!and!follow!the!on-screen!instructions.!
NOTE:(once(an( or( has(been(selected(from(a(patient’s(profile(screen,(the(profile(will(
ONLY(display(the(option(you(selected(from(then(onwards.(
!
View$the$results$
When!in!a!patient’s!profile,!you!can!press!the! icon!to!show!a!graphical!representation!of!all!the!
tests!saved!to!that!profile.!Each!point!on!the!graph!shows!the!numerical!reading,!and!the!date/time!
at!which!it!was!logged.!
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Edit$a$profile$
To!edit!a!patient’s!profile,!select!their!name/ID!from!the!list!and!then!press!their!name/ID!again.!Edit!
as!desired!using!the!keypad!and!either!touch! !to!keep!the!changes!or! !to!cancel.!
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Delete$a$profile$
Select!the!patient!you!wish!to!delete!from!the!list!and!press!the! !icon.!Press!the!tick!to!confirm.!
The!profile!will!be!deleted!and!you!will!be!returned!to!the!profile!screen.!
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Device!information!
For!information!on!the!device,!the!current!version!of!software,!serial!number!and!calibration!date,!
touch!the! !icon!in!the!top!left!corner!of!the!home!screen.!
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Settings!
The!default!settings,!date!and!time,!flow-meter!and!ambient!testing!can!all!be!accessed!and!altered!
via!the!setting!screen,!which!can!be!accessed!by!pressing!the! !icon.!
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Change$the$date/time$
Press! !and!then! !to!access!the!date/time!menu.!You!can!then!select!either!d-m-y!or!m-d-
y!for!the!date!format!and!12h!or!24h!for!the!time!format.!To!adjust!the!date/time,!select!the!
number!you!wish!to!change!and!pressing! !or! !to!increase/decrease.!Press! !to!save!your!
settings!or! !to!abort!changes!and!return!the!previous!screen.!Press! !to!return!to!the!
main!screen.!
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Test$log$
A!log!of!the!most!recent!150!test!results!are!saved!automatically!in!the!log.!To!view!the!log,!press!
!then!the! !icon!and!scroll!through!using!the!arrows.!Press! !to!return!the!previous!
screen!or!! !to!return!to!the!main!screen.!
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Change$PIN$
1. Each!device!will!automatically!be!pre-set!to!the!PIN!code!0000.!It!is!highly!recommended!
that!you!change!this!PIN!to!a!4!digit!number!that!you!will!remember.!
2. To!change!the!PIN,!press!the!change!PIN!icon! !from!the!settings!menu!and!you!will!
prompted!to!enter!the!current!PIN.!
NOTE:!If(your(PIN(is(entered(incorrectly,(you(will(be(notified(and(the(screen(will(refresh(for(
you(to(re-enter(your(PIN.!If(you(have(forgotten(your(PIN,(please(contact(Bedfont®(or(your(
local(distributor(to(reset(it.!
3. Enter!the!4!digit!code!and!press! !to!continue!
4. Enter!a!new!memorable!4!digit!PIN!and!press! !to!continue!
5. Re-enter!your!PIN!to!confirm!the!new!4!digit!code!and!press!the!tick!to!register!

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6. If!at!any!point!you!change!your!mind,!press! !to!return!the!previous!screen!or!! !to!
return!to!the!main!screen.!
Disable/enable$PIN$
For!data!security!reasons,!the!list!of!patient!profiles!on!the!NObreath®!FeNO!monitor!is!PIN!
protected!and!you!are!required!to!enter!a!4!digit!code!after!switch-on!and!every!30!minutes!
thereafter!for!optimum!security.!!
Although!it!is!not!recommended,!there!is!the!option!disable/enable!the!PIN!from!the!settings!menu.!
If!the!PIN!is!enabled,!press! !and!enter!your!4!digit!code!to!disable!it.!
If!the!PIN!is!disabled,!press! !and!enter!your!4!digit!code!to!enable!it.!
NOTE:!If(your(PIN(is(entered(incorrectly,(you(will(be(notified(and(the(screen(will(refresh(for(you(to(re-
enter(your(PIN.!If(you(have(forgotten(your(PIN,(please(contact(Bedfont®(or(your(local(distributor(to(
reset(it.!
!
Change$the$flow-meter$display$
To!change!the!flow-meter!display,!touch!the! !icon!in!
the!settings!menu.!You!will!be!shown!which!meters!are!currently!
set!for!both!the!Adult!and!Child!settings.!Touch!each!to!be!shown!
other!flow-meter!options.!Choose!a!flow-meter!display!and!press!
!to!save!the!changes.!If!you!do!not!wish!to!change!the!flow-meter!display,!simply!select!save!to!
keep!the!current!option.!Press! !to!return!the!previous!screen!or!! !to!return!to!the!main!
screen.!
!
Ambient$testing$
To!conduct!an!ambient!air!test,!touch!the! !icon.!A!test!will!begin!automatically!and!a!timer!
will!be!shown!onscreen.!When!the!test!is!complete,!a!result!will!be!displayed.!This!is!important!as!

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the!NObreath®!has!been!designed!to!function!in!environments!containing!less!than!350ppb!NO.!
Press! !to!return!the!previous!screen!or!! !to!return!to!the!main!screen.!
!
Screen$brightness$
To!adjust!the!brightness!of!the!display,!once!in!the!settings!menu,!press! !to!access!the!
second!page!where!you!will!find!the!brightness!settings!!.!Use!the!arrows! !or! !to!
increase/decrease!the!brightness!of!the!display.!Press! !to!return!the!previous!screen!or!! !
to!return!to!the!main!screen.!
!
Bluetooth$
To!turn!Bluetooth!ON/OFF,!once!in!the!settings!menu,!press! !to!access!the!second!page!and!
then!press! !or! !to!toggle!Bluetooth!ON!or!OFF.!If!Bluetooth!is!enabled,!the!Bluetooth!icon!
will!be!visible!at!the!top!left-hand!of!the!monitor,!next!to!the!battery!symbol! .!To!pair!
another!Bluetooth!enabled!device!with!the!NObreath®,!select!the!Bluetooth!PIN!icon!! !to!
show!the!pairing!PIN!onscreen.!Press! !to!return!the!previous!screen!or!! !to!return!to!the!
main!screen.!
!
Maintenance!
•The!NObreath®!should!be!calibrated!at!least!annually!or!the!NO!sensor!should!be!replaced.!
•The!breath!drying!cartridge!and!NO!scrubber!should!be!replaced!annually.!
NOTE:(The(unit(is(designed(to(provide(maintenance(reminders(when(re-calibration(is(
required.(You(will(be(prompted(to(service(the(unit(when(necessary.!
•The!NO!sensor!and!pump!should!be!replaced!every!5!years!
•The!maintenance!reminder!screen!shall!be!displayed!at!switch-on!if!the!service!
date!is!due!in!≤!30!days!&!displayed!every!day!until!it!has!been!reset!by!performing!a!
calibration!or!sensor!change.!

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•!The!maintenance!overdue!reminder!screen!shall!be!displayed!at!switch-on!if!a!
required!service!has!elapsed!365!days!since!the!last!service!&!displayed!every!day!until!it!has!
been!reset!by!performing!a!calibration!or!sensor!change.!
•The!maintenance!overdue!reminder!screen!shall!be!displayed!at!switch-on!if!a!
required!service!has!elapsed!395!days!since!the!last!service!&!displayed!every!day!until!it!has!
been!reset!by!performing!a!calibration!or!sensor!change.!!
•Each!mouthpiece!is!single-patient!use,!and!must!be!disposed!of!after!each!test!
•Never!open!the!unit!without!prior!training!from!Bedfont®!or!an!authorized!representative.!
Doing!so!will!invalidate!the!warranty!and!may!impair!the!performance!of!the!unit!
•Bedfont®!will!make!available!upon!request!any!additional!technical!information,!and!service!
training,!to!appropriately!qualified!persons!
!
!
Service!settings!
The!service!menu!can!be!accessed!from!the!settings!menu!by!pressing!the!service!access!icon! !
from!the!settings!menu.!
$
Pump$calibration$
To!calibrate!the!pump,!click!on!the! and!follow!the!instructions!below:!
1. !Connect!the!flow!meter!to!the!mouthpiece!aperture!and!block!the!bottom!vent!hole.!
!
2. !Use!the!arrows!onscreen,! !or! ,!to!increase/decrease!the!flow!rate!until!the!flow!
meter!reads!350!mL/min.!
3. Press! !to!save!the!pump!calibration!or! !to!cancel!and!return!to!the!previous!
screen.!
4. Return!to!the!home!screen!by!pressing! .!
!
Gas$calibration$

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To!calibrate!the!NObreath®,!follow!the!steps!below!to!complete!calibration:!
NOTE:!200ppb!NO!gas,!a!flow!meter!that!is!set!or!can!be!adjusted!to!1!litres!per!minute!(L/pm)!and!a!
device!temperature!of!21°C!±4°C!(68°F!±39°F)!is!required!to!complete!this!task.!
1. In!the!server!settings!menu,!start!the!calibration!process!by!pressing! !
2. The!device!will!perform!a!zero!indicated!by! !:!do!not!apply!gas!at!this!stage!
3. Follow!the!onscreen!instructions!to!finish!the!calibration!process!
4. Gas!flow!should!be!set!to!1!L/pm!
5. A!successful!calibration!will!be!indicated!by!the!.!Press! !to!save!the!calibration.!
NOTE:(If(you(click(on(the(home(icon(before(confirming(the(calibration,(it(will(be(dismissed(and(
you(will(have(to(repeat(the(calibration.(
6. A!failed!calibration!will!be!indicated!by!.!Press! !to!attempt!calibration!again.!If!the!
problem!persists!see!‘Troubleshooting’!or!call!your!local!supplier!of!Bedfont®!products.!
7. Return!to!the!home!screen!by!pressing! .!
!
View$device$diagnostics$
To!access!the!diagnostics!information!screen,!press!the! !icon!followed!by!the!icon.!!From!
here!you!can!also!see!the!diagnostics!log!by!pressing!the! !icon.!This!will!list!all!the!service!
dates!and!times!alongside!their!success!or!failure!as!indicated!by!the!tick/cross.!Press! !to!
return!to!the!previous!screen!or! !to!return!to!the!main!screen.!
!
Sensor$replacement$
To!replace!the!NObreath®!sensor,!click!on!the! !icon!in!the!service!settings!and!then!refer!to!
‘Service!access!section!of!this!manual.!
Servicing!
NOTE:!Before!undertaking!any!of!the!actions!below,!please!make!sure!that!the!device!is!switched!
off.!
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Accessing$the$serviceable$components$of$the$NObreath®$
Using!the!screwdriver!provided!with!the!NObreath®,!turn!the!quarter-turn!lock!anti-clockwise!to!
open!and!slide!and!lift!off!the!back!cover.!!
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Breath$drying$cartridge$replacement$
Grip!the!breath!drying!cartridge!as!shown!below!and!tug!lightly!until!you!hear!a!click.!Then,!simply!
lift!the!cartridge!out!and!replace!by!sliding!a!new!one!into!place.!!
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NO$scrubber$replacement$$
As!shown!below,!press!down!on!clip!on!the!left-hand!side!of!the!monitor!and!slide!out!the!NO!
scrubber!then!lift!to!remove!and!replace!with!a!new!one.!