Harman Stove Company Hot Air s SF1500A - Manual (Page 14)

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3-90-70744R11_05/13
maintenance
The spiral chamber is basically self-cleaning. However, if
there is a draft problem and you have been burning wood
for a long time with little heat demand, the spiral chamber
may need cleaning. Soft coal will also require more frequent
cleaning. To clean, remove stovepipe and scrape the
creosote from the front and top of the chamber and remove.
The rear of the chamber will not accumu late creosote.
NOTE: 1/8” to 1/4” of creosote in the spiral chamber is normal.
Creosote can be burned off by burning coal for a few days.
Firebricks may become cracked during the course of normal
operation. A cracked brick that is still in place is still doing its
job and need not be re placed immediately. If a brick is broken
and has fallen out of place, it should be replaced immediately.
The firebrick used in the Harman furnaces are inexpensive
and easy to replace.
The blower manufacturer recom mends the blower motor to
be oiled once a year with 10 to 20 drops of light weight oil
[check instructions packed in blower box).
Cleaning heat-Exchanger (SF2600 Only) -
Remove oil burner by removing four mounting bolts, Burner
can be tied up to ceiling to avoid having to remove the wiring.
Next, remove the collar from the front cover and remove front
cover by tilting out from top first. Now the heat exchanger
will be exposed. Next, remove the four nuts that hold on the
cover, then remove the cover. This will ex pose the inside of
the heat exchanger. Remove spirals by simply pulling them
out and clean the tubes with a brush. Reinstall spirals so
they are flush with the end of the tube and reassemble unit
in reverse of disassembly.
maintenance