Technical data

67
ATTENTION!
Manometer is fixed to the front panel. Dismount the front panel, as it is
stated below:
• Loosenthetwoscrews,underthepanel.Pullthepanelslightlyand
loosen the nut. Take out the manometer from the panel. By pushing
the front panel upwards, it can be easily taken apart.
• Disconnect the electric supply and isolate the boiler from gas and
water installations.
• Releasethetwofrontcasingpanelscrewslocatedunderneaththe
panel. Lift the front panel slightly to clear the 2 pins at the top and
remove.
• Undothe6fixingscrewsoffrontsealingpanelandremove.
• Undothe4fixingscrewsofcombustionchamberfrontpanelandbur-
ner box skirt and remove.
• Pullofftheplugconnectionstotheamesensingandignitionelect-
rodes.
• Removethe4burnerfixingscrewslocatedattherearoftheburner
and the 2 at the front. Pull the burner forward clear of the combustion
chamber.
• Checkthatthecombustionchamberinsulationpanelsarenotworn
out, replace if needed.
• Cleantheburnerbladeswithasoftbrush.
• Checkthattheinjectorsarefreefromdirtanddebris.Ifnecessary
clean each injector orifice using a soft brush or vacuum cleaner. Do
not use a wire brush or any abrasive material. It is not necessary to
remove the injectors unless there is evidence of debris in the orifice.
• Inspecttheignitionandamedetectionelectrodesinsitu.Ifneces-
sary clean with a soft brush. If either the electrodes or the ceramic
insulation show signs of damage or wear, replace the electrode(s).
• Replacetheburnerandelectrodesinreverseorder,takingcarenot
to damage the lining of the combustion chamber. Check that the po-
sition of the electrodes is as shown in Fig. 28. Adjust if necessary by
carefully bending the tip of the electrode rod taking extreme care not
to put any pressure on the ceramic insulation.