Harman® • PF-120 Owner’s Manual_R3 • 2014 -___ • 10/14
17
3-90-08120c
E. Burnpot Maintenance
When cleaning the burnpot use the supplied allen wrench
to remove any build-up that may have accumulated in the
holes of the burn pot grate. Make sure all the holes are open
and free from encrusted carbon around the edges.
A special effort should be made to clean 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 could cause a restriction to the flow of pellets and/or
cause the pellets to push onto the burn grate area unevenly.
The three vertical cuts in the burnpot surface (Figure 5.4)
are there to relieve expansion stress do to the high heat the
material sees. Some unevenness may occur in this area. As
long as the holes are kept clean and clear of any blockage
this will not effect the operation of the unit.
Removing the swing out burnpot:
• Make sure the unit is cooled down or cold.
• Remove ash pan.
• Swing the latch handle up until you feel it contact the top
of the swing plate. Then push upward until you see the
burnpot swing out. Figure 5.5.
• Lift the burnpot up off of the swing plate in the unit.
• Remove the flame guide.
• Empty any fines that may have built up under the burn
pot grate. To do this loosen the 2 thumb screws located
on the front of the burnpot and remove the cover. The
air chamber can be cleaned of any ash that has fallen
through the holes during operation and cleaning. Figure
5.6
Before replacing the swing out burnpot:
1. Inspect the red silicone gasket on the back of the burnpot
to make sure there is no damage or carbon around the
edges that may cause a poor seal. Figure 5.7.
2. Inspect the sealing surface on the swing plate inside the
unit. The surface needs to be clean and smooth.
3.
Do not forget to reinstall the flame guide or the
cleanout cover.
4. Make sure the burnpot is fully seated with the latch
handle down as far as it can go.
Figure 5.4
Vertical cuts
Pull up on handle
Figure 5.5
Burn pot hinge/Swing plate
Figure 5.7
Red silicone gasket
Thumb screws
Figure 5.6
