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PART III: MAINTENANCE
At least once a year carry out the maintenance operations listed below. In the case of seasonal servicing, it is
recommended to carry out the maintenance at the end of each heating season; in the case of continuous operation
the maintenance is carried out every 6 months.
WARNING: ALL OPERATIONS ON THE BURNER MUST BE CARRIED OUT WITH THE MAINS
DISCONNECTED AND THE FUEL MANAUL CUTOFF VALVES CLOSED!
ATTENTION: READ CAREFULLY THE “WARNINGS” CHAPTER AT THE BEGINNIG OF THIS MANUAL.
ROUTINE MAINTENANCE
Inspection and cleaning of the light oil filter cartridge: replace if necessary (see next paragraph);
check the overall condition of the flexible light oil hoses and make sure there are no signs of leakage;
inspect and eventually clean the filter inside the light oil pump: filter must be thoroughly cleaned at least once in a
season to ensure correct working of the fuel unit. To remove the filter, unscrew the four screws on the cover. When
reassemble, make sure that the filter is mounted with the feet toward the pump body. If the gasket between cover and
pump housing should be damaged, it must be replaced;
disassembly, inspection and cleaning of the combustion head. Respect the measurements listed in Tab. 3 on page 22;
inspection and cleaning of ignition electrodes and respective ceramic insulators: clean, adjust, and replace if necessary;
disassemble and clean the light oil nozzle (see “Pulizia della testa di combustione e dell’ugelloCleaning the combustion
head and the nozzle” on page 22).
Important: cleaning must be performed using solvent and not metal tools!
At the end of maintenance operations after first reassembling the burner, light the flame and check its shape, replacing
the nozzle whenever a questionable flame shape appears. Whenever the burner is used intensely, we recommend
preventively replacing the nozzle at the start of each heating season;
inspect and thoroughly clean the flame detection photoresistor and replace if necessary. In case of doubt, check the
detection current after first starting the burner by following the procedure illustrated in Fig. 12.
Light oil filter maintenance
For correct and proper servicing, proceed as follows:
cutoff the required pipe section;
unscrew the filter cup;
remove the filtering cartridge, wash it with gasoline; if necessary, replace it; check the
tightening O-rings and replace them if necessary;
replace the cup and restore the pipe line.
Cleaning the combustion head and the nozzle
1. Before proceeding to maintenance operations, turn the burner to off;
2. remove the cover, unscrewing the fixing screws;
3. emove the component plate of the burner P by unscrewing the V1, V2, V3 and V4 screws and the F securing pin.
Fig. 9
4. Hang the plate in the way shown in Fig. 9 in order to facilitate maintenance operations.