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steel sheath, where the electric igniter is located. Disconnect the igniter electric cables from the
terminal block, loosen the bolt mounting the steel sheath case and remove the igniter. Follow the
above procedure in reverse order to mount a new igniter and the burner cover.
7.3. Feeder pipe cleaning
If a string from the pellet bag or other object clogging the feeder operation gets into the feeder
pipe, then the feeder motor will overheat and circuit-breaker will be switched off by the
temperature sensor located in the motor.
In order to remove an object from the feeder pipe, the powering wire should be removed from the
socket inside the controller, unscrew the screws mounting the gear motor to feeder pipe,
remove the spring from the pipe and remove the object which was the cause of breakdown. Then
the feeder should be assembled and checked.
7.4. Burner cleaning
One of the reasons of lack of firing-up of a burner may be a slag filling in the burner chamber. The
igniter will not ignite the fire when there is a slag in its way. Slag does not burn itself.
As we are unsure as to the quality of fuel, that is why initially every day, later every now and then
we clean furnace pipe of a burner from slag and ash. After removing a burner, the
remnants of slag and ash should be cleaned with a wire-brush or a small poker. Common
cause of accumulating a slag is switching off a burner with the main switch. Too abrupt
removal of air-flow (oxygene) to the furnace causes unburning of fuel remnants. By another
firing up of a burner, without cleaning it from slag and ash, a smoke can come out from a
burner as the openings in it are blocked with slag. Burner is not aired enough.
Therefore:
Before switching off the power of a burner, burning off process should be conducted.
In case of serious breakdowns an installer should be contacted.
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