Harman PC45 - Burn Pot Maintenance; Burn Pot Cleaning Process; Burnpot Parts Cleaning Methods

22PC 45 Corn/Pellet Stove
3-90-02686R29_05/14
Burn Pot Maintenance
Corn or Pellet Burnpot Setup
Pellet "only" Burnpot Setup)
Burn Pot Cleaning and Maintenance
1. Besurethestovepoweristurnedoff.
2. Liftupandremovethefrontplatelockandfrontplate.Set
asidethefrontplate.
3. Removetheaugerextensionbypullingtowardyou,then
setaside(cornburnpotonly)
4. Removeburnpotgrateandsetaside.
5. Cleanallnesanddebristhathasaccumulated.
6. Installthe"cleaned"burnpotgratemakingsurethe2holes
lineupwiththe2tabsintheburnpothousing.
7. Now install the spare "clean" auger extension into the
augershaft.Makesurethereisn'tanycornordebrisin
theshaftopening.Thiswillpreventtheaugerextension
frombeingfullyinsertedintotheshaft.
8. Aligntheaugerextensionthroughtheholeinthe"clean"
frontplateandplacefrontplateagainsttheburnpotgrate
andhousing.
9. Installthefrontplatelock.
NOTE:Aftercleaningoftheseparts,inspectforexcessive
wearandreplaceasneeded.
Cleaning of Burnpot Parts
Cleaningcanbeperformedin2basicways:
1.Becausethecornslagbuildupwillabsorbmoisturefromthe
airwhencool,thepartscanjustbeleftexposedforseveral
daysandtheslagbuildupwillcrumbleoffoftheparts.
2.To accelerate this process,theparts can be soaked in
water for approximately 30 minutes (depending on the
amountofbuildup,theycouldbecleanedinlesstime).
NOTE:Cleaningof thesepartsisnotnecessaryuntilyou
seethatthereisanoticeabledecreaseinthequalityofthe
ameintheburnpot.Example:Unburnedfuelbeingpushed
overtheburnpot.
Safety Features
Thelowdraftsensorwhichisavacuumdifferentialswitch,monitorsthenegativepressure(draft)inthereboxthrougha
portontherearofthefeeder.Poordraftcanbecausedbyblockageintheexhaust,excessivebuild-uponthecombustion
blowerfanblades,afailedcombustionblower,oradoororotheropeningtothereboxnotsealedproperly.
Thecircuitboard ismonitoringtheposition ofthisswitch. Ifthisswitchwere toopen,powerto theigniterandthe feed
motorareinterrupted.Theindicatorlightsforthesecomponentsmaybeilluminatedeventhoughpowerisnotowingtothe
components.Besurealldoors,includingthehopperlid,aresecurelyclosedwhenoperatingtheappliance.
Fig. 38
Fig. 39