Sealey SCMA1 User manual

CARBON MONOXIDE ALARM
MODEL NO: SCMA1
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these
instructions, and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY
1.1. WHAT IS CARBON MONOXIDE?
1.1.1. Carbon Monoxide (CO) is an insidious poison that is released when fuels are burnt. It is a colourless, odourless, tasteless gas and
 thereforeverydi󰀩culttodetectwiththehumansenses.COkillshundredsofpeopleeachyearandinjuresmanymore.Itbinds 
 tohaemoglobininthebloodandreducestheamountofoxygenbeingcirculatedinthebody.InhighconcentrationsCOcan 
 killinminutes.COisproducedbytheincompletecombustionoffuelssuchaswood,charcoal,coal,heatingoil,para󰀩n, 
petrol, natural gas, propane, butane etc.
1.1.2. ExamplesofCOsources:
 Runningcarengineinagarage,oilandgasfurnaces,woodstoves,barbecues,cloggedchimneys,woodandgasreplaces,heating
 boiler,gasappliances,portablegenerators,gasorkeroseneheaters.
1.2. SYMPTOMS OF CO POISONING
ThefollowingsymptomsmayberelatedtoCOpoisoning:
 35ppm Themaximumallowableconcentrationforcontinuousexposureforhealthyadultsinany8hourperiod.
 200ppm Slightheadaches,fatigue,dizziness,nauseaafter2-3hours.
 400ppm Frontalheadacheswithin1-2hours,lifethreateningafter3hours.
 800ppm Dizziness,nauseaandconvulsionswithin45minutes,unconsciousnesswithin2hours,deathwithin3hours.
 1600ppmHeadache,dizzinessandnauseawithin20minutes,deathwithin1hour.
 6400ppmHeadache,dizzinessandnauseawithin1-2minutes.
1.3. InstallingaCOalarmisonlytherststeptowardssaferlivingconditions.Makesurethatyouandtheothermembersofyour 
 householdarefamiliarwiththecauseande󰀨ectsofcarbonmonoxidepoisoningandhowtooperatetheCOalarm.
9 TestyourCOalarmonceamonth.
9 Replacelowbatteriesimmediately.
9 Onlypurchaseapprovedcombustiondevices.
9 Installcombustiondevicesinthecorrectwayandstrictlyfollowtheinstructionsofthemanufacturer.
9 Haveanyinstallationscarriedoutbyaprofessional.
9 Haveyourinstallationscheckedbyaqualifiedinstalleronaregularbasis.
9 Haveyourchimneyandanydrainagecleanedeveryyear.
9 Regularlycheckallcombustiondevicesandverifyifdevicesarefreeofcorrosion.
9Never use a barbecue indoors or in garages.
9 Ensureproperventilationwhenusingafireplaceormultiburner.
9 AlwayspayattentiontothesymptomsofCarbonMonoxidepoisoning.
9 Thisalarmcanonlybeusedforresidentialapplications,itisNOTsuitableforuseonboats,invehicles,factoriesorshoppingmallsetc.
8 Avoidcontactwithorganicsolvents(includingsiliconeandotheradhesives),coatings,pharmaceutical,oilandhighconcentrationsof
 gas.Thisunitcannotbeusedinenvironmentscontainingcorrosivegas,corrosivegascandamagetheunit.
8DO NOTusewherethereisstrongwindmovement.
8DO NOTblockthealarmsairinletotherwisetheunit’ssensitivitywillbeaffected.
8 Thisunitcannotbearexcessiveshockorvibration.
8 Itwilltakethisalarmalongtimetoreturntoitsinitialstateafterithasbeenusedinhighconcentrationsofgasforalongtime.
8 Neveropentheunit,electrolyteleakagecancausedamage.
8 ThisCOalarmisdesignedonlytosenseCarbonMonoxidefromanysourceofcombustion.Itis NOT designedtodetectsmoke,fire
and other gases.
WARNING: Thisdeviceisdesignedtoprotectindividualsfromacuteeffectsofcarbonmonoxideexposure.Itmaynotfullysafeguard
 individualswithspecificmedicalconditions.Ifindoubt,consultamedicalpractitioner.
2. INTRODUCTION
CertiedtoBSEN50291-1:2010+A1:2012.Memoryfeatureallowstheoperatortodetectifandwhenthealarmhassoundedwhiletherehas
beenno-onepresent.FrontLEDpanelindicateslowbatteryandfault.PoweredbythreeAAbatteries(notincluded).Maximumlifespanve
years.
3. SPECIFICATION
MODEL NO:............................................................. SCMA1
Batteries (not included) .................................................3x AA
SCMA1 Issue 2 23/06/2020
Original Language Version
©JackSealeyLimited
Refer to
instructions

4. LOCATING THE ALARM
  ThisalarmisdesignedtodetecttoxicCOfumesthatresultfromincompletecombustion,suchasthoseemittedfromappliances, 
  furnaces,replacesandcarexhausts.
4.1.  Ifyourdwellingisonasinglestorey,forminimumprotectionyoushouldtanalarminthebedroomsorinthehallwayofthe 
 sleepingareas.Placeitasneartothesleepingareasaspossibleandensurethealarmisaudiblewhenthebedrooms  
are occupied.
4.2.  Ifyourdwellingismultistorey,forminimumprotectionplaceatleastonealarmoneachoor.
NOTE: Formaximumprotectionanalarmshouldbettedinorneareveryroomthatcontainsafuelburningappliancesuchasanygasres,
  centralheatingboilers,roomheaters,waterheaters,cookers,grillsetc.
WARNING!Thisalarmwillonlyindicatethepresenceofcarbonmonoxidegasatthesensor.CarbonMonoxidemaybepresentin
other areas.
WARNING! A Carbon Monoxide alarm does not function as a replacement for a smoke or gas detector.
5. POSITIONING THE ALARM
5.1. CarbonMonoxidehasasimilardensitytowarmairandtoensurethatthemoste󰀨ectiveuseismadeofthedetector,itshouldbe
 ttedatleast1.5metres(5feet)aboveoorlevelandatleast1.85metres(6feet)fromtheappliance.Seeg.1.
5.2. Areas to be avoided include the following:
•situationswherethetemperaturemayfallbelow-10°Corriseabove40°C.
 •inadamporhumidarea.
 •anyareawherehighlevelsofdusty,dirtyorgreasyemissionscouldcontaminateorclogthesensor.
• behind curtains or furniture.
 •inthepathofairdischargedfromafurnace,airconditioningventorceilingfan.
• outside the building.
 •directlyaboveasinkorcooker.
WARNING: Thiscarbonmonoxidealarmisdesignedforindooruseonly.DO NOTexposetorainormoisture.Itwillnotprotect 
 againsttheriskofcarbonmonoxidepoisoningwhenthebatteryhasdrained. DO NOTopenuportamperwiththealarmasthis 
 couldcauseamalfunction.
6. INSTALLATION
6.1. Thiscarbonmonoxidealarmispoweredbybatteryandrequiresnoadditionalwiring.Itcaneitherbeinstalledonawall,usingthe
 xingsprovided,oronatabletop.
6.2. WALL MOUNTED INSTALLATION
6.2.1. Establishthemountinglocationseesection5.1.andensurethereisnoelectricalwiringorpipeworkintheareaadjacenttothe 
 mountingsurface.
6.2.2. Markthetwomountingholelocationsanddrillholes.
6.2.3. Screwthescrewsintothedrilledholesandkeepthescrewsoutby4mm.Hangunitonwall.
6.3. TABLE TOP INSTALLATION
6.3.1.  PlacealarmonatabletopsothatuserscanseetheLEDsclearly.
7. OPERATION
7.1. INSTALL BATTERIES (REFER TO FIG.2)
7.1.1. Thealarmispoweredby3xLR6sizeAA1.5Vbatteries.
7.1.2. Undothescrewandreleasethecliptoopenthebatterycompartmentdoorontherearofthedetector.
7.1.3. Makesurethebatteriesareinsertedthecorrectwayround(seethepolaritydiagramsinthebottomofthecompartment).
7.1.4. Theredplasticindicatorhastotunderthebattery,thedoorwillnotshutifthisisnotdone.
g.1
SCMA1 Issue 2 23/06/2020
Original Language Version
©JackSealeyLimited

7.2. NORMAL OPERATION
7.2.1. WhennoCarbonMonoxideispresent,thegreenLEDashesonceevery50seconds,theLCDdisplays“0PPM”andthespeaker
 symbolisindicatedtoshowyouralarmisinnormalworkingcondition.Seeg.3.
7.3. HOW TO TEST THE CO ALARM
7.3.1. PresstheTESTbutton,theunitwilltriggerananalogueoutputofhighCOconcentrationthatwillbedetectedbytheMCU,thusstarting
 alarmingtogetherwiththeredLEDashing,simultaneouslytheunitwilldisplaythesimulatedCOconcentrationwiththe“SPEAKER”
 symbolashing,(SPEAKERsymbol)seeg.4.
NOTE: Testthisalarmwhenthe“ppm”symbolisdisplayedintheLCDafterthebatterieshavebeeninstalled.Thoughthisalarmcan 
  self-diagnosetheamplifyingcircuitandsensor,itisrecommendedthatyoutestyourCOalarmonceamonthtoensureitisworking
correctly.
7.4. ALARM LOCKING
7.4.1. IftheTESTbuttonispressedagainwhilsttheCOalarmissounding,
 thealarmwillmoveintoLOCKINGstatusandtheredLEDandthe 
 greenLEDwillashevery10secondsatthesametime,the 
 “SPEAKER”symbolontheLCDwilldisappear.Theunitwillnot 
 respondtoanyactionduringthe2minuteLOCKINGstatus.IftheCO
 concentrationexceeds300PPMin3minutes,theunitwillstart 
 alarming,seeg.5.
7.4.2. WhentheCOconcentrationgoesdowntoorbelow5PPMtheunitwill
 stopalarming.
g.2
g.3 g.4
g.5
SCMA1 Issue 2 23/06/2020
Original Language Version
©JackSealeyLimited

7.5. LOCKING RELEASE
7.5.1.  PresstheTESTbutton,theunitwillreturntoNormalOperationstatus,seeg.3.
7.6. ALARM CONDITION
7.6.1. WhentheunitdetectsdangerouslevelsofCO,itwillemitanalarmsignalalongwithashingredLED,seeg.4.Thiswillcontinue
 aslongasthereisadangerouslevelofCOconcentrationoforequalto5PPM.TheLCDwillshowtheconcentrationandSPEAKER
 symbol.Thiswillindicatethatanalarmhasoccurredanditshouldbeinvestigated.
NOTE: Tostopthealarmreferto7.4.
7.7. MEMORY FUNCTION
7.7.1. Whennooneishome,theunitmaydetectCOandthealarmsound.ThealarmstopswhentheCOconditionreturnstonormal.The
 highestCOconcentrationthatwaspresent,willberecordedandshownontheLCDwiththe“COgure”ickeringonceevery15
 seconds,togetherwith2continuous“beep”,“beep”sounds,redLEDandthe“SPEAKER”symbolashing,seeg.6.
7.7.2. PresstheTESTbutton,the“COgure”willthenbeclearedandtheunitreturnstonormalworkingcondition,seeg.3.
7.8. LOW BATTERY SIGNAL
7.8.1. Whentheunitdetectsthebatteryvoltageislowandneedsreplacing,theredLEDwillbeepevery40secondsalongwithoneBEEP.
 TheLCDwillshowtheLOWVOLTAGEsymbol,seeg.6.
7.8.2. TheredLEDwillashasusual,duringthelowbatteryperiod,andtheunitcanstillalarmasusual.
NOTE: Thenormalstandbytimeofbatteryis5yearsminimum.Ifthereisaproblemwiththebatteryorlowbatterysignalwarning 
  keepsactivatingforover30days,replacethebattery.
7.9. MANUAL ZERO
7.9.1. InnormaloperationwithnoCOgaspresent,whentheLCDdoesnotshow“0PPM”,youcanpresstheTESTbuttondownfor3 
 secondsuntilthePPMcharacterontheLCDdisappears,thenreleasetheTESTbuttonuntiltheLCDshows“0PPM”.
7.9.2. Manual Zero can only be carried out under the following two conditions:
A:TheCOconcentrationontheLCDislowerthan10PPM.
 B:TherstdigitoftheLCDshows“-”.
7.10. FAULT SIGNAL WARNING
7.10.1. Theunitwillself-testtheamplifyingcircuitandsensorevery10seconds. 
 Whenthereisaproblemwiththeamplifyingcircuitorsensor,theunit 
 willbeepevery30secondsalongwithayellowashingLED,theLCD 
 willshow“---”,seeg.7.
CO - LEVEL (PPM) RESPONSE TIME (MIN.) ALARM SOUND
30ppm-49ppm After 120 2continuouschirp(with1sfrequencychirp)
50ppm-99ppm 60-90 3continuouschirp(with1sfrequencychirp)
100ppm-299ppm 10-40 4continuouschirp(with1sfrequencychirp)
300ppmorabove 0-3 4continuouschirp(with0.5sfrequencychirp)
Flashes every 40
seconds
g.6
g.8
Flashes every 60
seconds
g.7
Flashes every 30
seconds
SCMA1 Issue 2 23/06/2020
Original Language Version
©JackSealeyLimited

7.11. END OF ALARM LIFE WARNING
7.11.1. Whenthealarmisattheendofitslife,itgivesthree“beep”audiblealarmsevery60secondstogetherwithaLEDvisualalarm,see
 g.8.
7.12. CALIBRATION
7.12.1. Calibration can only be carried out by a professional organisation, please DO NOT calibrate it yourself.
7.12.2. Calibrationiscarriedoutonagasconcentrationof400PPM,thiswillnota󰀨ecttheunit’saccuracy,everyunithasbeencalibrated
before delivery.
7.12.3. PresstheTESTbuttondownuntilall3LEDsareon,thenreleasetheTESTbutton,thegreenandyellowLEDswillturno󰀨,onlythe
 redLEDwillstayon.ItsigniesthatthealarmisnowinCalibrationMode.
7.12.4. Theunitwillnowgive5minutesinwhichitcanbecalibrated.
7.12.5. IftheunitcannotdetectanychangeofCOconcentrationwithin5minutesitwillautomaticallyexitCalibrationMode.
7.12.6. AftercalibratingonCOgas,the3LEDswillash3timesatthesametimetoindicatetheCalibrationwassuccessful.
NOTE: 1.TheunithasaminimumCOconcentrationforcalibrating(250PPMminimum).Ifthecalibrationiscarriedoutonaconcentration
 lowerthan250PPM,theunitwillnotchangeitspreviouscalibrationvalues.
 2.WhentheCOconcentrationontheLCDisbiggerthan30PPM,theunitwillstopenteringintoCalibrationModetoprevent 
 mis-operation.
 3.IftheuseraccidentallyentersintoCalibrationModebychance,justpresstheTESTbuttontoexittheCalibrationMode.
7.13. WHEN THE CO ALARM RAISES AN ALARM
7.13.1. Immediatelymoveoutdoors,openalldoors/windowstoventilatetheareaandallowthecarbonmonoxidetodisperse.
7.13.2. Wherepossibleto,turno󰀨anyfuelburningappliance.
7.13.3. Evacuate the building. DO NOTre-enterthepremisesormoveawayfromtheopendoor/windowuntilemergencyserviceshave 
 arrived,thepremiseshavebeenairedoutandyouralarmhasreturnedtoitsnormalcondition.
7.13.4. Seekmedicalhelpimmediatelyforanyonesu󰀨eringfromsymptomsofheadache,drowsiness,nauseaetc.
8DO NOTusetheappliancesagainuntiltheyhavebeencheckedbyaqualiedtechnician,thefaultlocatedandrepaired.
8. MAINTENANCE
8.1. Replace the entire unit every 5 years.
8.1. YourdetectorwillalertyoutopotentiallyhazardousCOconcentrationsinyourhomewhenmaintainedproperly.
8.2. Tomaintainyouralarminproperworkingorderitisrecommendedthatyou:
 •TestthealarmbypressingtheTESTbuttonatleastonceamonth.
 •CleanyourCOalarmregularlytopreventdustbuildup.Thiscanbedonewithavacuumcleanerwiththebrushattachmentoncea
 month.Cleangentlyaroundthegrillesandsides.
 •Neverusecleaningsolutionsonthealarm,simplywipewithadampcloth.
8DO NOTpaintthealarm.
9. GAS SELECTIVITY
9.1. Thisalarmpossessconformitytoselectivitywhichinternationalstandardsrequireandthetablebelowshowstheselectivityto 
 gasesdenedinUL2034andEN50291.
TEST GAS RELATIVE SENSITIVITY (CO IS 100)
CO 100
Hydrogen 40
Methane 0
Iso-Butane 0
Carbon dioxide 0
Carbondi-sulfate 0
Hydrogensulde 0
Nitrogen Oxide 0
Nitrogen Dioxide Less than 5
Ammonia 0***
Ethyl acetate 0***
Di-chloromethane 0***
Heptane 0***
Toluene 0***
IPA 0***
Ethanol Less than 2*
Hexa-methyldi-siloxan 0**
Exposuretime*:30minutes**:40minutes***:2hours
SCMA1 Issue 2 23/06/2020
Original Language Version
©JackSealeyLimited

Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500 01284 703534 [e-mail] www.sealey.co.uk
ENVIRONMENT PROTECTION
Recycleunwantedmaterialsinsteadofdisposingofthemaswaste.Alltools,accessoriesandpackagingshouldbesorted,takento
arecyclingcentreanddisposedofinamannerwhichiscompatiblewiththeenvironment.Whentheproductbecomescompletely
unserviceableandrequiresdisposal,drainanyfluids(ifapplicable)intoapprovedcontainersanddisposeoftheproductandfluids
according to local regulations.
BATTERY REMOVAL SEE SECTION 7.1
UndertheWasteBatteriesandAccumulatorsRegulations2009,JackSealeyLtdarerequiredtoinformpotentialpurchasersofproducts
containingbatteries(asdefinedwithintheseregulations),thattheyareregisteredwithValpak’sregisteredcompliancescheme.Jack
SealeyLtdBatteriesProducerRegistrationNumber(BPRN)isBPRN00705.
Note:Itisourpolicytocontinuallyimproveproductsandassuchwereservetherighttoalterdata,specificationsandcomponentpartswithoutprior
notice.
Important: No Liability is accepted for incorrect use of this product.
Warranty:Guaranteeis12monthsfrompurchasedate,proofofwhichisrequiredforanyclaim.
SCMA1 Issue 2 23/06/2020
Original Language Version
©JackSealeyLimited