Harman Home Heating DVC-500 Installation & Operating Manual page 21

Coal stoker
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MAINTENANCE: EVERY 3 MONTHS:
Never Block Air Outlets on top of stove, above door.
Tabs
Ash Shield
Fig 22
Latch
Fig 23
Fig 24
Rotate Latch
Blower Cover
A 3-month cleaning will give you a base line
as to how often your DVC500 needs to be cleaned.
Cleaning intervals will differ in each installation
because of the ash and moisture content of the
coal and the amount of coal burned.
NOTE: Unit should be off & cooled down
enough to perform these maintenance items:
1. Remove Ash Pan then remove ash shield behind
Ash Pan, fig.22. Lift the shield up and forward in
order to remove it from the stove. This will expose
the Blower Cover and Latch, fig.23.
2. Rotate the Latch counterclockwise to the vertical
position as shown in fig. 24.
3. Remove the Blower Cover by tilting the left side
slightly forward. Next, slide the Cover left and out
of the slot that holds the right side in place. The
Cover can now be removed to expose the Draft
Blower Wheel and Exhaust Outlet, fig. 25.
4. The blower wheel, blower housing, and exhaust
outlet can now be cleaned with a brush and vac-
uum cleaner. NOTE: The ESP probe is located at
the rear of the exhaust outlet shown in fig 28. Be
careful not to damage the probe when clean-
ing.
5. Open the Fines Cover on the bottom of the feeder
under the grates and clean, see fig.26. ATTEN-
TION: MAKE SURE COVER IS CLOSED
AND TIGHTENED BEFORE RELIGHTING
UNIT. UNIT WILL NOT OPERATE PROP-
ERLY WITH CLEAN OUT COVER LEAK-
AGE.
6. Check the flue pipe for excess buildup of fly ash
and clean if necessary.
7. Clean the glass thoroughly, use a safety razor to
scrape the sulfur buildup from the surface of glass.
Then clean with standard window cleaning fluid,
fig.21.
8. Inspect all gaskets for damage and turn the control
to "test", for motor test before relighting a fire.
21

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