Harman® • Accentra Owner’s Manual_R40 • 2002 -___ • 11/15
17
3-90-08326c
F. Heat Exchanger & Combustion Blower
Maintenance
Recommended once per month or after each ton of
pellets burned:
• Remove the two heat exchanger covers. Figure 5.4 These
covers are made of cast iron and are held into place with
a swing latch in the upper right and left corners. Figure
5.5. Swing the latch upward far enough to release the top
edge of the heat exchanger cover. Tilt the cover forward
approximately 2” and lift it upward about 1” to release the
bottom edge. The cover can now be taken completely out
through the upper door opening. Repeat the process with
the second heat exchanger cover.
Figure 5.4
Heat Exchanger cover latch
Figure 5.5
• The units interior is now ready to clean. Use the scraper
provided to clean the heat exchanger surfaces. A wire
brush or short bristled brush is an excellent cleaning tool.
Clean the fan blade and combustion blower fan housing.
NOTE: Be careful not to bend the fan blade while cleaning.
A bent blade will throw the fan blade out of balance. Figure
5.7.
Combustion intake assembly latch
• Remove the combustion intake assembly. Figure 5.4. The
combustion intake assembly is held into place with two
swing latches Figure 5.6. Swing each latch until it hangs
down away from the retainer stud. Now the assembly can
be taken out by tilting the right side outward first through
the lower door opening.
Figure 5.6
Figure 5.7
