Use and Care Manual

6
Mr.Heater|PortablePropaneHeater OperatingInstructionsandOwner’sManual
MAINTENANCE:
Alwayskeeptheheaterareaclearandfreefrom
combustiblematerials,gasolineandotherflammable
vaporsandliquids.
Keeptheventareas
(slotsinthebottom
andthetopatthe
frontofheater)
clearatalltimes.
Visuallyinspectthe
pilotflameand
burnerperiodically
duringuse.The
pilotflameshould
beblueincolor
(notyellow)andwillextendbeyondthethermocouple.The
flamewillsurroundthethermocouplejustbelowthetip,
seeFigure5.
Aslightyellowflamemayoccurwherethepilotflame
andmainburnerflamemeet.Theburnershouldbebright
orange(withaslightbluecoloraroundtheborder,ared-
orangehazethatisvisibleontheceramictileisacceptable)
andwithoutanoticeableflame.Ablueflamethatrollsout
atthetopoftheceramictileindicatesanaccumulationof
dust,lintorspiderwebsinsidethecasingassemblyand
mainburnerassembly.Ifthepilotisyellowortheburner
hasanoticeableflame,cleaningmayberequired.Usethe
followingproceduretoinspectthecasingassemblyand
mainburnerassembly.
Itisnecessarytoperiodicallychecktheburnerorificeand
burnerventuritubetomakesuretheyareclearofinsects/
nestsorspiderwebsthatmayaccumulateovertime.A
cloggedtubecanleadtoafire.
1 Allowheatertothoroughlycoolbeforeperformingany
maintenance.
2 Removedisposable1lb.cylinderfromheaterorturn
OFFgassupplyatremotecylindervalve,anddisconnect
hosefromheater.
3 Remove(4)fourscrewsthatsecuretherearcoverto
theHeater.
4 Pivotcoveroutwardfrombottom.Releasefrom2top
clips.Setaside.
5 Remove(4)fourburnerretainingscrewsandfuelline
fromburnerassembly.Removeburnerassemblyfrom
backofhousing.
6 Inspectinteriorofcasingassemblyforaccumulation
ofdust,lintorspiderwebs.Ifnecessary,cleaninterior
ofcasingassemblywithavacuumcleanerorapplyair
pressure.Donotdamageanycomponentswithincasing
assemblywhenyouarecleaning.
7 Inspectandcleanmainburnerorifice(threadedinto
orificeholder).Orificeholderisattachedtotheburner
assemblyventuriwith(2)twoscrews.
8 Inspectandcleanpilot(mountedtobracket)byusinga
vacuumorapplyairpressurethroughtheholesinthe
pilotindicatedbythearrowsinFigure5.
WARNING:Neveruseneedles,wires,orsimilar
cylindricalobjectstocleanthepilottoavoiddamaging
thecalibratedorificethatcontrolsthegasflow.
9 Applyairpressure(max.30psi.)intoceramictileof
burnerassemblyandtheventuritube(ref.item#16)to
removedust,lintorspiderwebs.
10Reassemblemainburnerorificeholderontotheburner
assembly.
11 Reinstallburnerassemblyintotheheaterhousing
12 Reinstallfuellineandcheckforleaks.
13 Installheaterbackcover.
TROUBLESHOOTING INFORMATION:
If Spark electrode does not produce spark.
CHECK
•Sparkelectrodebroken–replaceODS(OxygenDepletion
Sensor).
•Igniterwiremaynotbeattachedtosparkelectrode,
groundwiremaynotbeattachedtoframe-attach.
•Igniterwiredamaged–replace.
•Piezoigniterdefective–replacegasvalveass’y.
If Spark electrode produces spark but pilot does not light.
CHECK
•Nogastoheater–installdisposablecylinderorconnect
hoseandturnonvalveatremotecylinder.
•“PILOT”positionnotproperlyaligned–turngascontrol
knobto“PILOT”positionanddepress.
•Pilotisblockedfromspiderwebordirt–cleanpilot,see
MAINTENANCE.
If Pilot flame does not stay lit when knob is released.
CHECK
•Controlknobin“PILOT”positionnotcompletely
depressedorheldinlongenoughtopurgeairfromlines.
•Pilotflamenotsurroundingthermocouple–cleanpilot,
seeMAINTENANCE.
•PilotAssemblydefective–replace.
• Tipswitchwiresdisconnected–connect.
If Main burner does not ignite.
CHECK
•Mainburnerorificeisblocked–cleanburner,see
MAINTENANCE.
If Heater keeps shutting “OFF” during normal operation.
CHECK
•Pilotisblocked–cleanpilot,seeMAINTENANCE.
•Provideminimumfreshairopeningof9squareinches
(example3”x3”opening).
•Tipoverswitchactivatedfrombumpingheater.Re-light
•Regulatordefective-Replaceregulator.
•Internalcontamination-Replacecontrolvalveand
regulator.
•CallTechnicalServicesforadditionalinformation.
Figure5