baltur COMIST 26 SP Manual De Instrucciones página 24

MAINTENANCE
At the end of the heating season, it is good practice to clean the gas and light oil filters, the combustion head (disk,
insulators, nozzles), the combustion air passages and the photoelectric cell (UV).
It is advisable to use wooden or plastic instruments to clean the nozzle passages.
Nozzle should be replaced after 12 months' use.
UV CELL
If flame detection is carried out with the UV cell, the following should be taken into consideration.
Even the slightest greasiness will compromise the passage of the ultraviolet rays through the UV photoelectric cell
bulb, thus preventing the sensitive internal element from receiving the quantity of radiation necessary for it to function
properly. Should the bulb be fouled by light oil, fuel oil, etc., it is indispensable to clean it thoroughly.
It should be pointed out that even by simply touching the bulb with the fingers, it is possible to leave a slight greasiness
which could compromise the working of the UV photoelectric cell.
The UV cell does not "see" daylight or light from an ordinary lamp.
It is possible to verify its sensibility with a flame (or cigarette lighter or a candle) or with the electric spark that occurs
between electrodes in an ordinary ignition transformer.
To ensure that the UV cell works properly, its current value should be sufficiently stable so as not to fall below the
minimum value required for the specific control box. It may be necessary to search experimentally for the best
position by sliding (axial or rotation movement) the body that contains the photoelectric cell in respect to the fastening
clamp. An inspection can be carried out by inserting a microammeter, with an adequate scale, in series to one of the
two UV photoelectric cell connection wires. It is obviously necessary to respect the polarity (+ e -).
For LMG 22.. control box the photocell coltage must be included between 200 microA and 500 microA.
22