Harman PB105 - Maintenance; Burnpot Maintenance; Burnpot Air Chamber

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Use the at end of the scraper provided to scrape down
over the holed surface of the burnpot grate. Fig. 18. It is
notnecessarytocleanoutthescrapingsfromthiscleaning
because they will be pushed out the next time the auger
operates.
Note: Make a special effort to scrape the bottom inside
corners of the burnpot where the auger tube enters the
burnpot. Carbon deposits can build up over time in this area
that may cause a restriction to the ow of pellets into the
burnpot.
Withthereoutandburnpotcold,usethesuppliedallen
wrenchtoremoveanybuild-upthatmayhaveaccumulated
in the holes of the burn pot grate. Simply push the allen
wrenchdownthrougheachholeensuringitisclearofany
build-uppayingattentionnottodamagetheigniterelement
intheprocess.
Cleaning the Burnpot Air Chamber: 
Thisareaonlyneedstobecleanedtwiceaheatingseason,
unless excessive buildup is noticed during scheduled
cleanings.
Thereisacoveronthefrontoftheburnpottogainaccessto
theairchamber.Thecoverisheldintoplacebytwothumb
screws.Loosen thethumb screwsandremove thecover.
Fig.19.Theairchambercanbecleanedofanyashthathas
fallenthroughtheholesduringoperationandcleaning.Also
atthistime,removethefeederassemblycoverandremove
anynesthatmayhaveaccumulated.
NOTE: ALWAYS REMEMBER TO CLOSE THE CLEANOUT
COVER AFTER CLEANING. Feeder Chamber (Fig. 20):
This chamber may get a buildup of nes from the feeder
mechanismmovement.This areashould bechecked and
cleanedatleastonceayear.
To remove the feeder cover:
• Loosenthe5/16”wingnut.
• Slidethecoveroffofthethreadedstudandliftupward.
• Inspectandcleantheinnerchamberifnecessary.Fig.20.
• Reinstallthecovermakingcertainitiscenteredonthe
feederbodyandhand-tightenthewingnut.
Burnpot Maintenance
Cleanout Cover
Fig. 19
Fig. 20
Fines area
Feeder cover
Fig. 17
Scrape burnpot to remove any carbon
build-up that may have occured
Scrape the burnpot to remove any carbon deposits which may have formed.
Scraping can be done while the boiler is in operation, accessed through the
rebox door opening.
Fig. 18
Burnpot Cleaning:
Theburnpotshouldbecleanednolessthanonceaweek.
Forbestoperationtheburnpotshouldbecleanedeverytime
thehopperislledwithpellets.Theredoesnothavetobe
outtoscrapetheburnpotalthoughitisrecommendedthe
boilerbeonminimumburnatthetimeofcleaning.
Note: Scraping can be done while in operation if performed
through the rebox door opening. Fig. 17
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