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0006080871_201711
ANOMALY
Poor flame, with sparks.
Poorly shaped flame with smoke and soot.
Defective flame, flickering or protruding from
combustion head.
Corrosion inside the boiler.
Soot at the mouth of the chimney.
POSSIBLE CAUSE
1
Spraying pressure is too low.
2
Too much combustion air.
3
Nozzle inefficient because dirty or
worn.
4
Water in the fuel.
1
Insufficient combustion air flow.
2
Nozzle inefficient because dirty or
worn.
3
Nozzle capacity too low with
respect to combustion chamber
volume.
4
Combustion chamber unsuitably
designed or too small.
5
Unsuitable refractory coating (it
reduces excessively the space of
the flame).
6
Boiler or chimney ducts blocked.
7
Spraying pressure is low.
1
Excessive draught, only when there
is an extractor in the chimney.
2
Nozzle inefficient because dirty or
worn.
3
Water in the fuel.
4
Dirty deflector disk.
5
Too much combustion air.
6
Air passage between deflector disk
and diffuser excessively closed.
1
Boiler operating temperature too
low (below the dew point).
2
Smoke temperature too low,
approximately below 130 °C for
diesel.
1
Excessive cooling of smoke
(approximately below 130°C) in the
chimney, for an outside chimney
not adequately heat insulated or
cold air infiltration.
REMEDY
1
Restore it at the required value.
2
Reduce combustion air
3
Clean or replace.
4
Drain water from the tank using
a suitable pump. Never use the
burner pump for this purpose.
1
Increase combustion air.
2
Clean or replace.
3
Decrease diesel flow rate to suit
the chamber (thermal power will
obviously be lower than necessary)
or replace the boiler.
4
Increase nozzle flow by replacing it.
5
Modify it, carefully abiding by
the instructions given by boiler
manufacturer.
6
Arrange for cleaning.
7
Restore it at the required value.
1
Adjust the suction fan speed by
changing the pulley diameter.
2
Clean or replace.
3
Drain water from the tank using
a suitable pump. Never use the
burner pump for this purpose.
4 Clean.
5
Reduce combustion air.
6
Correct the position of the
combustion head regulating device.
1
Increase the operating temperature.
2
Increase diesel flow rate is the
boiler allows it.
1
Improve insulation and close any
opening letting cold air into the
chimney.