Routine Maintenance - Central Boiler Pallet Burner Dual Fuel Owner's Manual

CAUTION
Use only genuine Central Boiler Parts and
Accessories if it ever becomes necessary to
replace any component of the outdoor furnace.

ROUTINE MAINTENANCE

Routine inspections and maintenance are essential to the
proper operation and longevity of the outdoor furnace.
The items indicated in the preventive maintenance
schedule are intended to serve as a guideline. Actual
intervals between inspections and maintenance may
vary depending on a number of factors, including your
heat load requirements, type of wood used, and outdoor
temperatures.
NOTE: Proper firebox maintenance is essential to
the longevity of the outdoor furnace.
CAUTION
Do not burn plastic, garbage, treated wood or
fuels not listed for this furnace.
NOTE: Chloride or sulfurous gases can be
generated if plastic or rubber is burned and will
mix with the moisture from the wood to form
sulfuric or hydrochloric acids in the firebox,
creating excessive corrosion.
3-1. Water Level
Open the sight gauge valve. The sight gauge tube will
fill to indicate the level of water in the outdoor furnace.
Be sure to close the sight gauge valve after checking
water level. The sight gauge valve and tube will drain
when the valve is closed.
3-2. Vent Cap
Check that the vent cap fits loosely on the vent opening.
WARNING
Vent cap must fit loosely on the vent opening
(Fig. 1). Do not force the cap down or try to seal it
tightly onto the vent pipe. Do not extend or restrict
the vent pipe or opening. DO NOT ALLOW THE
OUTDOOR FURNACE TO BE PRESSURIZED.
3-3. Ashtrol
Add Ashtrol to the firebox. Use a spoon as directed
to broadcast the powder in the firebox, alternating the
location. For example, broadcast on the fire or hot coals
one day and then on the walls the next day. Ashtrol is a
pH modifier that helps to neutralize acids that may form
in the firebox.
Section 3 - Maintenance Instructions
3-4. Stir Ash
Stir the ashes in the firebox and pull them forward
to prevent the ashes from sealing in moisture on the
bottom and along the edges. It is especially important to
scrape the walls and the four corners at the ash line and
below. If this maintenance operation is not performed
as directed, deterioration can result from the moisture
trapped between the ashes and the steel.
1. Remove any heavy or solidified ashes. When ashes
build up to either the door frame in the front or
the top of the beveled ash pan of the firebox, they
should be removed. A hoe, ash rake and shovel for
this procedure may be purchased from your Central
Boiler dealer. Leave enough ashes and coals to
relight the fire.
CAUTION
Always wear the appropriate personal protective
gear when cleaning ashes from the firebox.
2. Disposal of ashes - Place ashes in a metal container
with a tight-fitting metal lid. It can take many days
before the ashes are completely cooled. Other waste
should not be placed in this container.
3. Each time the ashes are cleaned out, inspect the
door rope (see Section 3-5) to make sure it is sealing
properly.
WARNING
When cleaning the outdoor furnace, be careful not
to spill any hot ash outside of the noncombustible
container.
3-5. Firebox Door Seal
The firebox door rope must be in good condition to
ensure an airtight seal. Look for wear spots or portions
of the door rope lacking an indentation from the firebox
door. The door rope should have a uniform indentation
in it all the way around.
1. Open the firebox door. One way to check that the
door rope is sealing all the way around the firebox
door is to insert a piece of paper similar in size and
shape to a dollar bill in several locations around the
perimeter of the door and then to close and latch the
firebox door.
2. At each location, pull on the piece of paper. If it pulls
out easily, either the door rope is sealing improperly
and needs to be replaced, or the firebox door needs
to be adjusted.
3. Check that the damper is properly sealing when
closed. Normal wear over time can create a groove
or dent where the damper lid strikes the casting
when closing. Replace the damper if it is not sealing
properly.
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