Harman Magnum Stoker, Operating Manual

Page: 4 / 32

4
DO NOT BURN WET COAL
rEAd ThIS
Always empty the hopper when not burning for more than a
week. when left standing for long periods with wet coal, the
pusher block will rust and corrode, causing it to seize. If the
stoker is then turned "on", damage to the pusher assembly
and feed motor will result. This will be considered neglect
and will void the warranty on those parts. If the unit has not
been burned for a period
of time, always check to see if moving parts are free
before using. This can best be determined by shaking the
adjuster rod.
Freshly delivered coal is watered down to
eliminate dust when loading and unloading. Wet
rice coal does not flow as well as damp or dry
coal. We do not recommend burning wet coal,
however, we realize if it's the only coal you have
it is better to burn it than freeze. If you must burn
wet coal, the feed rate must be increased in
order to get the same size fire. As the wet coal
in the hopper dries out, the feed rate must be
decreased. If you don’t, the feeder will over-fire
the stove and waste coal. Doing this once or
twice a year will not damage your stove as long
as it is hot and burning. The damage is caused
when the hopper has wet coal in it when the
stove is cold. This will cause rust and corrosion
which is not covered by your warranty.
Usually after the coal dries for three or four
days, depending on conditions, it will flow very
well and feed properly. The feed rate will then
be the same as for dry coal.
damp coal also should not be left in the
hopper of a cold stove. Even dry coal can
hold or draw enough moisture to promote
rust. Always empty the hopper when the
stove will not be used for more than a week.
damp Coal wet Coal