Harman Stove Company PB 105 - Manual (Page 31)

31 3-90-07205R19_05/13
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 filled with pellets. The fire 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 firebox door opening. See Fig. 17
Use the flat end of the scraper provided to scrape down
over the holed surface of the burnpot grate. See 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 flow of pellets
into the burnpot.
Note: An old long shank screwdriver with the end
sharpened is an ideal aid in the removal of these
deposits.
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. See 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 fines 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 fines 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.
See Fig. 20.
• Reinstall the cover making certain it is centered on the
feeder body and hand-tighten the wing nut.
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
firebox door opening.