Harman Coal Stoker VF3000 - Manual (Page 20)

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Maintenance
CautIOn:
- Inspect flue pipes, joints, and seals regularly to
ensure that smoke and flue gases are not drawing
into the dwelling.
- Cleaning of the heat exchanger, flue pipe, chimney,
and draft inducer if used, is especially important at
the end of the heating season to minimize corrosion
during the summer months caused by accumulated
ash.
- DO NOT use chemicals or fluids to start a fire.
- dO nOt burn garbage, gasoline, naptha, engine oil,
or other inappropriate materials.
hopper Maintenance:
Always empty the hopper when not burning for more than
a week.
Pusher Block Maintenance:
When left standing for long periods with wet coal, the pusher
block will rust and corrode, causing it to stop. 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.
annually:
The end of the heating season is the best time to perform
annual maintenance. Rust and corrosion can form much
faster in the high humidity of summer, so cleaning your VF
3000 will prevent those damages.
1. Remove all coal from the hopper
2. Remove all ashes
3. Remove and clean flue pipe
4. Check chimney and clean if necessary
5. Remove hopper and check for rust at bottom edges. If rust
is found, remove it with a file or sandpaper then paint the
area with spray paint available at your Harman® dealer.
6. Check the feeder for rust and corrosion where the hopper
fits into it.
7. Check pusher block to be sure it moves freely. This can
best be done by shaking the adjuster rod. If it does not
move freely, it should be removed and cleaned. Also
remove any rust or corrosion from the area where the
pusher block slides and spray with WD-40 or other rust
preventing spray. To remove pusher block, remove cover,
wing nut, adjuster and adjuster tube. Remove motor mount
with motor in place and cord still attached. Swing pusher
assembly up as high as it will go. Remove feed indicator
from side with allen wrench. Now the pusher block can be
removed. To reinstall, just reverse procedure. If the pusher
block cannot be removed, call your Harman® dealer.
warnIng- risk Of Fire;
- DO NOT Operate with flue draft exceeding -.10 in Water
Column (-24.9 Pa.)
- DO NOT operate with fuel loading or ash removal doors
open.
- DO NOT store fuel or other combustiblematerial within
specified installation clearance areas.
- INSPECT and clean chimney flue system and chimney
connectors regularly.
Adjuster Rod