Riello 20118250, Installation And Maintenance Manual

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COMMISSIONING AND MAINTENANCE
− Make sure that the new nozzle is exactly the same type
and size as the old one
− Clean the contact and sealing surfaces
− manually drive and screw the new nozzle fully home,
then tighten it properly.
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Do not use nozzles of different make, type and specifica-
tions to the original.
REMOVING THE ELECTRODES
Proceed as follows to remove the electrodes:
− Loosen the screw (1)
− Extract the electrodes and check them for wear
Reverse the above steps to reassemble.
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REMOVING THE BURNER CONTROLLER
The burner cover has to be removed first in order to remove the
controller.
Proceed as follows:
− Loosen the screw (1), open the cover (2) and remove all
the components inside
− Remove the coil (3)
− Unscrew and remove the two screws (4).
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3
4
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9
This operation must be performed with the burner turned
off and mains power disconnected.
CLEANING THE FAN
9
Clean the inside and the rotor blades of the fan unit to re-
move any build-up of dust. Accumulated dust reduces the
air flow and therefore reduces combustion efficiency, lead-
ing to increased emissions.
9
Take care not to damage or block the fan while performing
cleaning or maintenance.
Proceed as follows
− Unscrew the screws (1) and remove the air damper (2);
− Unscrew the screws (3) and remove the suction cover (4);
− Clean the fan and the inside of the suction cover using a
suitable brush and compressed air.
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− Reverse the above steps to reassemble. Take care to re-
place all burner parts in their original positions.
3.8.2 Boiler exchanger cleaning
Proceed as follows to access the internal parts of the boiler:
− remove the fixing screw (2) and extract the front panel (1);
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