Maintenance; Notes On Safety For The Maintenance; Maintenance Programme; Maintenance Frequency - Riello Gulliver BG6.1D Installation, Use And Maintenance Instructions

9

Maintenance

9.1

Notes on safety for the maintenance

The periodic maintenance is essential for the good operation,
safety, yield and duration of the burner.
It allows you to reduce consumption and polluting emissions and
to keep the product in a reliable state over time.
The maintenance interventions and the calibration
of the burner must only be carried out by qualified,
authorised personnel, in accordance with the con-
tents of this manual and in compliance with the
DANGER
standards and regulations of current laws.
Before carrying out any maintenance, cleaning or checking oper-
ations:
disconnect the electricity supply from the burner
by means of the main switch of the system;
DANGER
close the fuel interception tap.
DANGER
9.2

Maintenance programme

9.2.1

Maintenance frequency

The combustion system should be checked at least once a year
by a representative of the manufacturer or another specialised
technician.
9.2.2

Checking and cleaning

Pump
If the pressure is unstable, or the pump runs noisily, the flexible
hose must be detached from the line filter and the fuel must be
sucked from a tank located near the burner. This measure per-
mits the cause of the anomaly to be traced to either the suction
piping or the pump.
If the problem lies in the suction line, check the filter is clean and
that air is not entering the piping.
Flexible hoses
Check there are no occlusions or obstructions in the fuel supply
or return lines, in the air suction areas, and in the combustion
product waste pipe.
Filters
Clean the filter of the fuel suction line and of the pump.
If rust or other impurities are observed inside the pump, use a
separate pump to lift any water and other impurities that may
have deposited on the bottom of the tank.
Electrical wiring
Check that the electrical wiring of the burner has been made
properly (page 17).
20015403
Maintenance
Fan
Check to make sure that no dust has accumulated inside the fan
or on its blades, as this condition will cause a reduction in the air
flow rate and provoke polluting combustion.
If necessary, clean the fan.
Combustion head
Check that all the parts of the combustion head are undamaged,
not deformed by the high temperatures, free of all impurities and
positioned correctly.
Clean the combustion head in the fuel outlet area.
Check that the positioning of the combustion head is correct and
that it is properly fixed to the boiler.
Nozzles
Do not clean the nozzle openings.
It is advisable to replace nozzles once a year during periodical
maintenance.
The change of nozzle requires the combustion to be controlled.
Flame detector
Clean the flame detector.
Electrodes
Check the correct positioning of the electrodes.
Combustion
Carry out an analysis of the combustion flue gases.
Significant differences with respect to the previous measure-
ments indicate the points where more care should be exercised
during maintenance.
Let the burner run at full capacity for about ten minutes, setting all
the elements correctly as explained in this manual.
Then carry out the analysis of the combustion by checking:
– smoke index (Bacharach);
– CO 2 percentage (%);
– CO content (ppm);
– NOx content (ppm);
– flue gas temperature at the flue.
24 GB