Alternate Heating COAL GUN S1000, Installation And Operator'S Manual, Page: 43 / 64

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APPENDIX D: MAINTENANCE
The Alternate Heating Systems Coal Gun

is
designed to provide years of reliable service.
Nevertheless, it is necessary to provide basic
service in order to maintain optimum efficiency
and service from your boiler. We recommend
that you have your authorized Alternate Heating
Systems dealer provide the seasonal
preventative maintenance service. If you decide
to provide your own maintenance, the
instructions provided here are to be used as a
guide.
Routine maintenance should be
performed every three months on units in
continuous operation and at least once each
heating season on residential installations.
Before the boiler is serviced, shut off power to
the boiler. The coal fire must be completely out.
If the boiler has been actively firing, it may take
days for the fire to go out completely. Make
sure the coal pot, boiler and ash grate are cool.
CLEANING HEAT EXCHANGER AND
VENTING SYSTEM
It will be necessary to remove the fan assembly
before cleaning the heat exchanger. Removing
this assembly is described in a subsequent
section of this manual. The exact page number
is referenced in the index.
Brush and clean the heat exchanger area and
vacuum all material. Remove the smoke pipe
from the boiler to the chimney and clean out all
debris with a brush. Clean the chimney if
necessary. Remove the bolts on the boiler flue
outlet and remove the cyclone tube. Clean all
deposits from the tube, flue and openings in the
heat exchanger tube. Inspect and replace any
damaged gaskets
(a fiberglass rope gasket is
used for the fan assembly) and check the
ceramic heat shield, replacing as necessary.
Check the fan assembly belt on belt-driven
units, adjust tension and alignment as needed,
replace if worn or damaged.
Reinstall fan assembly, cyclone tube, and smoke
pipe. Tighten the fan assembly bolts opposite
from each other, using even torque as you work
around the assembly. Refasten and seal the
smoke pipe.
CLEANING COAL POT, FEED TUBE
AND GRATE
Remove and clean the ash pan. Remove
remaining coal from the hopper, coal pot and
grate. Examine all areas for damage and clean as
needed. Remove grate linkage arm and
manually move grate back and forth to check
bearing condition. Reassemble grate arm.
Lubricate grate chain with chain oil and check
sprockets for wear.
Other routine maintenance items include:

Drive belts and roller chains should be
inspected and tightened if necessary. To
adjust drive belt tension and alignment,
loosen motor mount bolts (belt drive units
only) and slide motor so as to affect proper
tension and alignment. To adjust roller chain
tension on grate system, loosen grate motor
mount bolts and slide grate motor so as to
affect proper chain tension. This will be
accomplished when there is about ¼ in of
play in the roller chain.

The fan shaft bearings on belt drive units
should be lubricated with a small amount of
high temperature service grease such as
Drydene Prypoplex EB 2, or the equivalent.

Several drops of oil should be placed on
the pitman shaft bearing blocks.
The chimney connector and chimney should be
inspected at least monthly during the heating