Harman Accentra - Heat Exchanger & Combustion Blower Maintenance

Harman® • Accentra Owner’s Manual_R40 • 2002 -___ • 11/1517 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rstthrough
thelowerdooropening.
Figure 5.6
Figure 5.7