16Undo the screws and remove both the covers of theopenings. Tilt out the front part (see Fig. 8b, detail 3A)After completion of the cleaning make sure thatwhen putting back the covers, the seals are seatedin the right positions. It is essential to replacedefective seals.Figure 8d: Cleaning coversFigure 8e: Cleaning covers open8.7. Cleaning the induced draught housing and fanThis housing is made accessible for cleaning by undoingthe 4 nuts shown in Figure 9. (See arrows).Remove the induced draught motor by pulling it out.Now clean the flue gas passes, the induced draught fanand the flue tubes with a brush and an ash vacuumcleaner.Then reassemble the components in reverse order.Make sure that the seal is seated in the right positionagain. It is essential to replace defective seals.Make sure of the electrical connections on the fan motorand their correct positions.Figure 9: Induced draught fan1 = Screw2 = Blower motor3 = Seal9. Description of the components9.1. Storage container (pellet tank)17 kg of wood pellets can be stored in the storagecontainer. This quantity permits constant operation forup to 30 hours.9.2. Screw conveyor motor / screw conveyorThe screw conveyor motor drives the screw conveyor.This delivers the wood pellets from the storage containerto the combustion chamber (combustion pot). The screwconveyor motor’s rotation speed is regulated and ittherefore delivers the required supply quantity to themodular heat output (2.5 kW to 8 kW).Figure 10: Screw conveyor motor1 = Screw conveyor motor2 = Condenser3 = Thermosensor, flue gas4 = Induced draught fan5 = Overheat cutout6 = Heat exchanger7 = Pellet tank8 = Outside air connection3 2 182134576