Harman® • PF-120 Owner’s Manual_R3 • 2014 -___ • 10/1416
3-90-08120c
D. Ash Removal
Itisrecommendedtoremovetheasheswhenthefurnace
isnotinoperation.Thislessensthechancesofcomingin
contactwithhotsurfaces.Ashescanberemovedwhilein
operationbut,extracaremustbetaken.
Open Outer Ash Door
LiftthetwolatchesshowninFigure5.1andopentheouter
door as shown in Figure 5.2. If the Distribution Blower is
runningwhentheouterdoorisopen,someairwillescape
aroundthedooropening.Thisisnotaproblem,howeverany
dustthatiscausedintheashremovalprocesscanpotentially
beblownaround.
Open Inner Ash Door
LiftlatchesshowninFigure5.2andopentheinnerdooras
showninFigure5.3.
NOTE: Keep hopper lid and inner door closed during
operation and maintain all seals in good condition.
Remove Ash Pan
Alwayswearglovestoremoveashpan.Grabtheashpan
bythehandleandpullitoutofthefurnace.Liftthehandle
anduseitforcarryingtheashpan. Close the inner door
before disposing of the ashes.
Disposal of Ashes
Ashes shouldbe placed in a metal container with a tight
ttinglid.Theclosedcontainerofashesshouldbeplacedon
anon-combustibleoororontheground,wellawayfromall
combustiblematerials,pendingnaldisposal.Ifashesare
disposedofbyburialinsoilorotherwiselocallydispersed,
theyshouldberetainedintheclosedcontaineruntilallcinders
havethoroughlycooled.
Soot and Fly-ash: Formation and Need for Removal
Theproductsofcombustionwillcontainsmallparticlesof
y-ash.They-ashwillcollectintheexhaustventingsystem
andrestricttheowoftheuegases.Incompletecombustion,
suchas,duringstartup,shutdown,orincorrectoperationof
thefurnacewillleadtosomesootformationwhichwillcollect
intheexhaustventingsystem.Theexhaustventingsystem
shouldbeinspectedatleasttwicemonthlytodetermineif
cleaningisnecessary.
Inner Door Latches
Outer Door Latches
Figure 5.1
Figure 5.2
Figure 5.3