A.O. Smith 310 - CLEANING COMBUSTION COMPONENTS

TroubleshootingGuide
26|Page
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CLEANINGTHECOMBUSTIONCOMPONENTS
Procedureforcleaningthefan,burner,FlameSensorandAFR,asusedbyallServiceRepresentatives.
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1) TOOLS
‐Gatherthefollowingmaterialstogether:
a. Degreaserinapumpactionbottle,Sandpaper,Philips ScrewDriver,Needle‐NosedPliers,Duct
Tape,Flashlight,AirCompressor,ShopVacuum,3xTowels
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2) POWER
‐Disconnectpowertoyourunitbyeitherunpluggi ngitfromthewalloutlet,orbythecircuit
breaker,dependingonthesetup.
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3) GAS
‐Shutoffthegassupply.
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4) FRONTCOVER
‐Removethefrontcover.
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5) MANIFOLDPLATE/GASVALVEASSEMBLY
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a. Removethemanifoldplatescrews.TheyarewidepanheadPhilipsscrews,locatedonthe
edgesofthestampedmetalplateofthegasmanifold
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b. Removethebrassgasvalvescrew.
c. RemovethewireholdingtheEasy‐Linkwiresinplace.
d. Disconnecttheclearplastictubefrombeneaththecombustionchamber
e. Gentlyliftupthemanifold&gasvalveassemblytodislodgeitfromthegasinlet,andgentlyletit
hang.
i. Thereisasmallfilterscreeninthebottomofthegasinlet.Donotloseit.
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Figure25
Figure26