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12. Maintenance by user
At least 1 hour before cleaning the boiler must be put out of operation (including electrical disconnection)..
1.) It is necessary to be particular about timely refuelling. If only a small volume of fuel is left in the reservoir
it must be immediately refuelled so that no “false air” is sucked.
2.) Remove the ash from the combustion chamber and ash-pan drawer regularly. It is necessary to use the
protective gloves when emptying the ash-pan drawer.
3.) The boiler cleaning frequency depends on the fuel quality. In case of pellets with ash content not
exceeding 0,5 % the cleaning is done in 3 - 4 week intervals. Pellets with ash content 1,5 % and more
cause that the boiler must be checked and cleaned once a week or more often as need may be. Boiler
cleaning means to remove ash or deposits from the boiler drum (combustion chamber, combustion
products lines etc.).
4.) Every 3-4 days (depending on the boiler operation) it is necessary to remove the burner bowl and by
tapping it pour out the solidified ashes and check air supply holes clearness! This is influenced by the
pellets quality. It is necessary to use the protective gloves. (see Fig.No. 19)
5.) The boiler operators must not remove the cover from the ventilator or interfere in any other way
with these units. It only can be done by a skilled service worker.
6.) After completing the cleaning operation or any manipulation with conveyor of the fuel reservoir check the
correct clamping of the transporting hose by means of hose clips on both ends.
7.) We must be particular about a perfect tightness of the boiler (stoking door, ash-pan door, cleaning cover
of the smoke extension piece etc.) in order to keep a moderate overpressure in the combustion chamber
during the ventilator operation.
8.) Worm gear units are filled with synthetic oil by the manufacturer therefore their further maintenance is not
necessary.
Fig. no. 19
Burner position on the boiler door
1. Burner bowl
2. Openings for air inlet
