Harman Magnum Stoker, Operating Manual

Page: 19 / 32

Annually:
At the end of the heating season is the best time to perform annual maintenance. The reason is, rust
and corrosion can form much faster in the high humidity of summer.
Remove all coal from hopper.
Remove all ashes.
Remove and clean flue pipe.
Check chimney and clean if necessary.
Remove hopper and check for rust at bottom edges. If rust is found, remove it with a file or sandpaper
and paint the area with spray paint available from your dealer.
Check the feeder for rust and corrosion where the hopper fits into it.
ImPOrTANT: Check the pusher block to see that 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 coat with a rust inhibiting product. To remove
pusher block - - Remove cover, remove 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 the procedure. If the pusher block cannot be moved, call your dealer.
ImPOrTANT: 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. Always check to see if moving parts are free before using, if the
unit has not been burned for a period of time. This can best be determined by shaking the adjuster rod.