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MAINTENANCE
Analyse combustion gases and check that the emission values are
correct at least once a year, in compliance with current law.
• It is advisable to use wooden or plastic tools to clean nozzle
passages.
• Clean air dampers, the air pressure switch with pressure port and
the relevant pipe (if fitted).
• Check the electrode condition. Replace them, if necessary.
• Clean the photocell. Replace it, if necessary.
• Have the burner and the chimney cleaned by specialised personnel
(stove repairer); a clean burner is more efficient, lasts longer and
is quieter.
• Check that the fuel filter is clean. Replace it, if necessary.
• Check that all components of the combustion head are in good
condition, have not been deformed and are free from deposits
deriving from the installation environment and/or from poor
combustion.
• Analyse combustion gases and check emissions values.
UV PHOTOCELL
Even the slightest greasiness will compromise the passage of the
ultraviolet rays through the UV photocell bulb, thus preventing the
sensitive internal element from receiving the quantity of radiation
necessary for it to work properly. If the bulb is fouled with diesel, fuel
oil, etc... it must be properly cleaned.
CAUTION / WARNING
Even by simply touching the bulb with fingers, it is possible
to leave a slight greasiness which could compromise UV
photocell operation.
The UV photocell does not detect daylight or the light from a common
lamp. Sensitivity can be checked with a flame (cigarette lighter, candle)
or with the electric discharge between the electrodes of a common
ignition transformer. To ensure proper operation, the UV photocell
current value should be sufficiently stable and should not drop below
the minimum value required by the specific equipment; this value is
indicated in the wiring diagram. It may be necessary to search for the
best position by sliding (axial or rotational movement) the casing that
contains the photocell with respect to the fastening clamp. This can
be checked by connecting a micro-ammeter, with a suitable scale, in
series to one of the two UV photocell connection cables. Obviously
the + and - polarity must be respected. The equipment ...needs a
photocell current between 200 and 500 microA.
The UV photocell does not detect daylight or the light from a common
lamp.
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